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X-ORIGINAL-URL:https://www.chemistry.ucla.edu
X-WR-CALDESC:Events for UCLA
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DTSTART:20221106T090000
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221114T160000
DTEND;TZID=America/Los_Angeles:20221114T170000
DTSTAMP:20260614T123144
CREATED:20220902T204411Z
LAST-MODIFIED:20221023T211249Z
UID:23323-1668441600-1668445200@www.chemistry.ucla.edu
SUMMARY:Physical Chemistry Seminar 228: Natalie Banerejie
DESCRIPTION:Prof. Banerjie Flyer \nTitle: Organic Semiconductors in Electronics\, Photovoltaics and Bioelectronics \nAbstrac: Organic conjugated materials have many favourable properties that make them interesting for a variety of electronic applications. The aim of my group is to understand the fundamental processes underlying their functionality. We use ultrafast spectroscopic techniques\, such as transient absorption (TA) and time-domain terahertz (TD-THz) spectroscopies\, to investigate charge carriers in organic semiconductors. While femtosecond TA measurements bring insights to the nature and evolution of the photoexcited species\, we use TD-THz spectroscopy to gain information about the charge transport properties on the nanoscale. After presenting an overview of our experimental techniques\, I will show results about charge generation in highly efficient solar cell materials based on organic polymer:nonfullerene blends. The photophysical properties of doped organic semiconductors are then discussed\, as well as their applications to bioelectronic devices such as organic electrochemical transistors (OECTs). Finally\, ways to explore ultrafast spectroscopy to study such devices in operando are presented.
URL:https://www.chemistry.ucla.edu/events/physical-chemistry-seminar-228-natalie-banerejie/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221114T150000
DTEND;TZID=America/Los_Angeles:20221114T155000
DTSTAMP:20260614T123144
CREATED:20220921T214630Z
LAST-MODIFIED:20220922T212412Z
UID:24050-1668438000-1668441000@www.chemistry.ucla.edu
SUMMARY:Organic Student Seminar 248: Jeremy Dworkin
DESCRIPTION:
URL:https://www.chemistry.ucla.edu/seminars/organic-student-seminar-2022-11-14/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Organic,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221110T160000
DTEND;TZID=America/Los_Angeles:20221110T170000
DTSTAMP:20260614T123144
CREATED:20220902T213754Z
LAST-MODIFIED:20221023T215941Z
UID:23353-1668096000-1668099600@www.chemistry.ucla.edu
SUMMARY:Houk-Jung Organic Colloquium 247: Brett Fors
DESCRIPTION:Brett Fors Flyer \nTitle: Controlling Polymer Structure in Cationic and Radical Polymerizations \nAbstract: Synthetic polymers are significant importance in all aspects of modern life\, and during the last few decades\, these materials have facilitated major societal advances. Innovative polymeric materials have the potential to address humankind’s next grand scientific and technological challenges; however\, taking advantage of the opportunities presented by these materials requires new methods for gaining precise control of polymer structure and function. To address this challenge\, our research group focuses on the development of new synthetic methods and catalyst systems to control polymer architecture\, composition\, and function to yield next-generation materials. Specifically\, this presentation will detail (1) the development of polymerization reactions where polymer chain growth and sequence are regulated with external stimuli and (2) the development of user-friendly cationic polymerization processes that can be run open to the air without reagent purification.
URL:https://www.chemistry.ucla.edu/events/houk-jung-organic-colloquium-247-brett-fors/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Organic Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221109T160000
DTEND;TZID=America/Los_Angeles:20221109T173000
DTSTAMP:20260614T123144
CREATED:20221027T172715Z
LAST-MODIFIED:20221102T001755Z
UID:25199-1668009600-1668015000@www.chemistry.ucla.edu
SUMMARY:The Chem Cell Press Lecture: Cathleen Crudden
DESCRIPTION:Flyer: Prof. Cathleen Crudden Flyer \nMeet the Speaker: 11:30 a.m.\, YH 3096 \nTitle: Metal catalysts\, clusters and surfaces: Cross coupling chemistry and the use of NHCs to form monolayers on surfaces and clusters \nAbstract: The use of N-heterocyclic carbenes to modify homogeneous metal catalysts is widespread since the high metal–NHC bond strength renders high oxidative and chemical stability to NHC–ligated metal complexes. Despite this fact\, the use of NHCs to modify metal surfaces has received little attention until recently. We will describe the use of NHC ligands to stabilize metal surfaces\, including Au(111)\, Cu(111)\, Pt(111) and other metals. Films prepared by the deposition of NHCs show molecular ordering on the surface and remarkable stability. The impact of NHCs on the chemistry of nanoclusters will also be discussed\, including the preparation of chiral NHC-stabilized Au nanoclusters. We will also describe advances in cross-coupling chemistry the preparation of complex chiral molecules of interest to the pharmaceutical industry. This will include the ability to cross-couple seemingly identical boron substituents with different electrophiles\, taking advantage of inherent differences in transmetallation behaviour. The development of novel electrophiles for Suzuki-Miyaura cross coupling chemistry particularly sulfones as electrophiles for alkyl cross-coupling reactions will also be described.
URL:https://www.chemistry.ucla.edu/seminars/the-chem-cell-press-lecture-cathleen-crudden/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Inorganic,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221107T160000
DTEND;TZID=America/Los_Angeles:20221107T170000
DTSTAMP:20260614T123144
CREATED:20220902T203929Z
LAST-MODIFIED:20221023T210949Z
UID:23320-1667836800-1667840400@www.chemistry.ucla.edu
SUMMARY:Physical Chemistry Seminar 228: Davit Potoyan
DESCRIPTION:Prof Potoyan Flyer \nTitle: Multi-Scale Computational Studies of Biomolecular Dynamics and Phase Separation \nAbstract: Cellular life is contingent on the ability of biomolecules to self-organize by forming dynamic and functional compartments. Uncovering the underlying driving forces for biomolecular self-organization is a long-standing fundamental problem for biological sciences. Experiments of the last decade have found that liquid-liquid phase separation of biomolecules underlies the formation of many mesoscopic cellular compartments. The ability to phase separation is encoded in the sequence of biomolecules. However\, in vivo biomolecules are phase-separated in heterogeneous and out of equilibrium environments\, further complicating the extraction of simple sequence-function relationships. Disentangling the roles of sequence and environment on biomolecular phase separation poses unique challenges for both theory and experiment\, which call for developing novel interdisciplinary multi-scale computational approaches. \nOur group is developing and applying multi-scale computational models that use atomistic\, coarse-grained\, and phase-field techniques to study nuclear  compartmentalization at different scales\, in and out of equilibrium. In the talk\, we will present recent results on protein-RNA phase transitions\, mesoscale nuclear dynamics of chromatin phase separation\, and detailed models of biomolecular condensates based on bioinformatics and atomistic simulations.
URL:https://www.chemistry.ucla.edu/events/physical-chemistry-seminar-228-davit-potoyan/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Physical Chemistry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221103T160000
DTEND;TZID=America/Los_Angeles:20221103T170000
DTSTAMP:20260614T123144
CREATED:20220902T213619Z
LAST-MODIFIED:20221023T215743Z
UID:23350-1667491200-1667494800@www.chemistry.ucla.edu
SUMMARY:Houk-Jung Organic Colloquium 247: Robert Grubbs
DESCRIPTION:Robert Grubbs Flyer \nTitle: Investigating Aldehydes and Ketones as Monomers for Sustainable Polymers \nAbstract: Chain polymerization of carbonyl compounds results in polymers with acetal linkages in the backbone that have potential as degradable or recyclable materials. The wide variety of aldehydes and ketones that occur naturally or through sustainable transformations of naturally occurring compounds suggests that they also have promise as sustainable materials. There are many challenges associated with purifying aldehyde and ketone monomers and with controlling their polymerization. Glyoxylate esters are one such class of monomers that can be polymerized by treatment with bases\, but monomer purification is a critical issue and the polymerization mechanism has not been studied in detail. We will discuss our efforts to control the polymerization of glyoxylate esters from hydroxyl-terminated macroinitiators and to prepare a range of block copolymers with degradable polyglyoxylate blocks\, including polymers that form hydrogels. Efforts toward expanding these polymerization methods to include other monomers and investigating the sustainability of these methods will also be discussed.
URL:https://www.chemistry.ucla.edu/events/houk-jung-organic-colloquium-247-robert-grubbs/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Organic Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221102T160000
DTEND;TZID=America/Los_Angeles:20221102T173000
DTSTAMP:20260614T123144
CREATED:20221027T171642Z
LAST-MODIFIED:20221027T171642Z
UID:25179-1667404800-1667410200@www.chemistry.ucla.edu
SUMMARY:Jeffrey I. Zink Inorganic Chemistry Seminar Series: Eszter Boros
DESCRIPTION:Flyer: Prof. Eszter Boros Flyer \nMeet the Speaker: 11 a.m.\, YH 3096 \nTitle: Capture\, Excite\, Release: Towards the Development of the Next Generation of Metal-based Medicines \nAbstract: Stable and radioactive metal ions possess attractive properties for biomedical imaging and therapy. Our lab applies a cross-disciplinary approach that combines physical inorganic chemistry\, coordination chemistry\, chemical biology and preclinical imaging to transform into tools for non-invasive diagnostic imaging\, optical probes for image-guided surgical resection and targeted radiotherapy of cancers. This presentation will introduce the concept and validation of 1) self-illuminated optical probes and 2) photochemical/thermally activated isotope capture and release systems for the synthesis of radiopharmaceuticals.
URL:https://www.chemistry.ucla.edu/seminars/jeffrey-i-zink-inorganic-chemistry-seminar-series-eszter-boros/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Inorganic,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221031T160000
DTEND;TZID=America/Los_Angeles:20221031T170000
DTSTAMP:20260614T123144
CREATED:20220902T203142Z
LAST-MODIFIED:20221023T210704Z
UID:23318-1667232000-1667235600@www.chemistry.ucla.edu
SUMMARY:Physical Chemistry Seminary 228: Stephan Link
DESCRIPTION:Prof. Link Flyer \nTitle: Insights from Single Particle Spectroscopy of Plasmonic Nanostructures \nAbstract: A surface plasmon in a metal nanoparticle is the coherent oscillation of the conduction band electrons leading to both absorption and scattering as well as strong local electromagnetic fields. These fundamental properties have been exploited in many different ways\, including surface enhanced spectroscopy and sensing\, photothermal cancer therapy\, and color display generation. The performance of plasmonic nanoparticles for a desired application not only depends on the particle size and shape\, but is tunable through nanoparticle interactions on different length scales that support near- and far-field coupling. Chemical synthesis and assembly of nanostructures are able to tailor plasmonic properties that are\, however\, typically broadened by ensemble averaging. Single particle spectroscopy together with correlated imaging is capable of removing heterogeneity in size\, shape\, and assembly geometry and furthermore allows one to separate absorption and scattering contributions. In this talk I will discuss our recent work on understanding the radiative\, non-radiative\, chiral\, electrochemical\, and mechanical properties of individual and coupled plasmonic nanostructures including the generation and transfer of hot electrons to semiconductors as well as to liquids\, for applications seeking to harvest light energy with hybrid plasmonic materials.
URL:https://www.chemistry.ucla.edu/events/physical-chemistry-seminary-228-stephan-link/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Physical Chemistry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221027T160000
DTEND;TZID=America/Los_Angeles:20221027T170000
DTSTAMP:20260614T123144
CREATED:20220902T213235Z
LAST-MODIFIED:20221023T215616Z
UID:23348-1666886400-1666890000@www.chemistry.ucla.edu
SUMMARY:Houk-Jung Organic Colloquium 247: Andrew Roberts
DESCRIPTION:Andrew Roberts Flyer \nTitle: Chemical Strategies for Breaking and Making Carbon–Nitrogen Bonds \nAbstract: C-N bond breaking: Amines are ubiquitous functional groups that are simple to prepare and functionalize. We show that tertiary amines can template reductive cyclization reactions\, forming biaryl and bibenzyl carbon–carbon bonds. These cyclic amine products can undergo carbon–carbon bond-forming amine rearrangement and deaminative contraction reactions\, providing efficient access to polycyclic (hetero)aromatic natural products. These strategies and our understanding of deaminative mechanisms will be presented. II. C-N bond making: Residue-selective methods for peptide modification and cyclization are useful for the development of therapeutic peptides with improved metabolic stability properties. The Roberts laboratory draws inspiration from cyclic peptide natural products that exhibit a host of promising biological properties. Motivated by the phenolic linkages found in both the arylomycin and vancomycin families of natural products\, we have developed methods that leverage the in situ generation of 1\,2\,4-triazoline-3\,5-dione moieties on native peptides to achieve tyrosine-selective cyclizations. In awe of lasso peptides\, non-covalently interlocked and proteolytically-stable bioactive natural products\, we are working to develop strategies for reversible isopeptide bond formation that could enable the sequence-independent chemical synthesis of lasso peptides. Detailed accounts of these methods and their applications will be presented. \n 
URL:https://www.chemistry.ucla.edu/events/houk-jung-organic-colloquium-247-andrew-roberts/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Organic Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221027T120000
DTEND;TZID=America/Los_Angeles:20221027T130000
DTSTAMP:20260614T123144
CREATED:20221020T190355Z
LAST-MODIFIED:20221020T190701Z
UID:25111-1666872000-1666875600@www.chemistry.ucla.edu
SUMMARY:Chem 218 Student Exit Seminar - Stephanie Tenney
DESCRIPTION:
URL:https://www.chemistry.ucla.edu/events/chem-218-student-exit-seminar-stephanie-tenney/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Chem 218 Student Exit Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221026T160000
DTEND;TZID=America/Los_Angeles:20221026T171500
DTSTAMP:20260614T123144
CREATED:20220921T054327Z
LAST-MODIFIED:20220921T054418Z
UID:23970-1666800000-1666804500@www.chemistry.ucla.edu
SUMMARY:Jeffrey I. Zink Inorganic Chemistry Seminar 278: Chong Liu
DESCRIPTION:Flyer: TBD \nTitle: TBD \nAbstract: TBD
URL:https://www.chemistry.ucla.edu/seminars/jeffrey-i-zink-inorganic-chemistry-seminar-278-chong-liu/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Inorganic,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221024T160000
DTEND;TZID=America/Los_Angeles:20221024T170000
DTSTAMP:20260614T123144
CREATED:20220902T202909Z
LAST-MODIFIED:20221023T210235Z
UID:23314-1666627200-1666630800@www.chemistry.ucla.edu
SUMMARY:Physical Chemistry Seminar 228: Steven Schwartz
DESCRIPTION:Prof Schwartz Flyer \nTitle: Rare Event Sampling\, Protein Dynamics in Enzymatic Catalysis and Directed Evolution: Lessons in Artificial Enzyme Design \nAbstract: Remarkably\, after many decades of study\, the way enzymes so magnificently catalyze chemical reactions is still a matter of significant debate. In addition\, artificial protein catalyst design has proven elusive. Years ago\, we proposed the concept of the “promoting vibration\,” a rapid protein motion which is a central part of the reaction coordinate and hence the mechanism of chemistry and reaction rate enhancement. Over the years\, these motions have been found by a variety of groups in a variety of enzymes that catalyze diverse chemical reactions. In addition to theoretical work\, experimental work has strongly supported this concept.More recently we have examined the development of such motions in laboratory evolved enzymes\, finding initial protein designs lacking in such motions followed by appearance via the evolution process. These developments suggest that at least one of the reasons for the failure of theoretical enzyme design to create functional catalysts has been a focus on the creation of only static structures that are complementary to transition states. This talk will first briefly review early work on the discovery of promoting vibrations along with our Transition Path Sampling methods and reaction coordinate identification algorithms. We will then discuss how evolution introduces promoting vibrations and how this creates functional catalysts. We will finally speculate on how such ideas may be introduced into de novo enzyme design
URL:https://www.chemistry.ucla.edu/events/physical-chemistry-seminar-228-steven-schwartz/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Physical Chemistry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221024T150000
DTEND;TZID=America/Los_Angeles:20221024T155000
DTSTAMP:20260614T123144
CREATED:20220921T214630Z
LAST-MODIFIED:20220922T212126Z
UID:24047-1666623600-1666626600@www.chemistry.ucla.edu
SUMMARY:Organic Student Seminar 248: Jordan Gonzalez
DESCRIPTION:
URL:https://www.chemistry.ucla.edu/seminars/organic-student-seminar-2022-10-24/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Organic,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221021T160000
DTEND;TZID=America/Los_Angeles:20221021T170000
DTSTAMP:20260614T123144
CREATED:20221013T004917Z
LAST-MODIFIED:20221013T005037Z
UID:25060-1666368000-1666371600@www.chemistry.ucla.edu
SUMMARY:Special Materials Chemistry Seminar: Sandrine Ithurria
DESCRIPTION:
URL:https://www.chemistry.ucla.edu/events/special-materials-chemistry-seminar-sandrine-ithurria/
CATEGORIES:Special Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221021T133000
DTEND;TZID=America/Los_Angeles:20221021T143000
DTSTAMP:20260614T123144
CREATED:20221017T154716Z
LAST-MODIFIED:20221017T154716Z
UID:25078-1666359000-1666362600@www.chemistry.ucla.edu
SUMMARY:Special Organic Colloquium: Dr. Jake Yeston
DESCRIPTION:Jake Yeston Seminar Flyer \nTitle: Scientific Publishing From The Inside Out \nAbstract: For 140 years\, Science Magazine has presented a weekly selection of the finest research across the full spectrum of scientific disciplines. Our goal remains to keep scientists well-informed about important developments within and also beyond their own fields of research\, and to encourage collaborative thinking. This talk will discuss how the staff at Science engages the research community all over the world to determine which papers to publish\, and also how we envision maintaining and enhancing our value to the community in the rapidly evolving publication landscape. \nSpeaker Bio: Jake Yeston joined the staff at Science in 2004\, with responsibilities to edit and coordinate review for original research submissions in chemistry and overlapping segments of biochemistry and applied physics. In his current role as Editor\, he oversees all research content in the physical sciences and helps set journal policy\, with a particular focus on improving data archiving practices. Prior to arriving at Science\, Jake earned an AB in chemistry from Harvard University in 1996\, working with Eric Jacobsen\, and then a Ph.D. in chemistry from the University of California-Berkeley in 2001 under Bob Bergman and Brad Moore\, with a focus on infrared flash kinetics of rhodium-mediated C-H activation. He conducted postdoctoral research in ultrafast vibrational spectroscopy\, first with Karl Kompa at the Max Planck Institute for Quantum Optics in Garching\, Germany on a Humboldt fellowship\, and then with Ted Heilweil as a National Research Council fellow at the National Institute of Standards and Technology in Gaithersburg\, Maryland. \n 
URL:https://www.chemistry.ucla.edu/events/special-organic-colloquium-dr-jake-yeston/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Organic Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221020T160000
DTEND;TZID=America/Los_Angeles:20221020T170000
DTSTAMP:20260614T123144
CREATED:20220902T212654Z
LAST-MODIFIED:20220921T035926Z
UID:23346-1666281600-1666285200@www.chemistry.ucla.edu
SUMMARY:Organic Syntheses - UCLA Lectureship: Sarah Reisman
DESCRIPTION:Flyer TBA \nTitle TBA \nAbstract TBA
URL:https://www.chemistry.ucla.edu/events/organic-syntheses-ucla-lectureship-sarah-reisman/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Organic Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221020T140000
DTEND;TZID=America/Los_Angeles:20221020T151500
DTSTAMP:20260614T123144
CREATED:20220921T054129Z
LAST-MODIFIED:20220921T054159Z
UID:23968-1666274400-1666278900@www.chemistry.ucla.edu
SUMMARY:Jeffrey I. Zink Inorganic Chemistry Seminar 278: Michael Schulz
DESCRIPTION:Flyer: TBD \nTitle: TBD \nAbstract: TBD
URL:https://www.chemistry.ucla.edu/seminars/jeffrey-i-zink-inorganic-chemistry-seminar-278-michael-schulz/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Inorganic,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221019T160000
DTEND;TZID=America/Los_Angeles:20221019T171500
DTSTAMP:20260614T123144
CREATED:20220921T053630Z
LAST-MODIFIED:20220922T002254Z
UID:23601-1666195200-1666199700@www.chemistry.ucla.edu
SUMMARY:Jeffrey I. Zink Inorganic Chemistry Seminar 278: Charles H. Wallace
DESCRIPTION:Flyer: Dr. Charles H. Wallace \nTitle: The Role of Chemistry in Advanced Patterning of Semiconductor Devices \nAbstract: The presentation will introduce lithography and advanced patterning to construct transistors and interconnects for semiconductor device manufacturing followed by a discussion of the various inorganic chemicals and materials used in the manufacturing process.  Some of the key topics of discussion will include the scaling of transistors and the role of the minimum resolution of lithography equipment (Rayleigh’s equation).  A summary of historical scaling will be reviewed and a description of future research and development that is required to continue scaling into the future.  The importance of chemistry and impact of chemistry on the manufacturing process and applications will be described.  The introduction of EUV (Extreme Ultraviolet) lithography into the semiconductor patterning process has enabled some simplification of process architecture; however\, has not decreased edge-placement-error (EPE) margin enough to keep up with the pitch scaling requirements.  Chemical selectivity is the most effective way to avoid EPE-caused failures on devices which lead to poor yield.  Area Selective Deposition (ASD) solutions include development of self-assembled monolayers (SAMs) and selective ALD/CVD growth.  Finally\, the talk will conclude with a description of the careers available in the semiconductor device manufacturing industry with an emphasis on research and development at Intel Corporation.
URL:https://www.chemistry.ucla.edu/seminars/jeffrey-i-zink-inorganic-chemistry-seminar-278-charles-h-wallace/
LOCATION:Mol Sci 3440\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Inorganic,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221019T160000
DTEND;TZID=America/Los_Angeles:20221019T170000
DTSTAMP:20260614T123144
CREATED:20220901T225553Z
LAST-MODIFIED:20220901T225938Z
UID:23193-1666195200-1666198800@www.chemistry.ucla.edu
SUMMARY:Special Physical Chemistry Seminar 228: Vahid Sandoghdar
DESCRIPTION:Vahid Sandoghdar Flyer \nTitle: Ultrasensitive Analysis of Nano-Matter via Scattering: From Single Proteins and Viruses to Sub-Cellular Features \nAbstract: The last two decades have witnessed the insatiable potential of optical techniques for sensitive studies. Optical detection of small nanoparticles and single molecules have often relied on fluorescence\, but limited photophysics and the need for labeling pose severe restrictions for the broad application of this approach. The ubiquitous process of Rayleigh scattering offers a powerful alternative. Although the common intuition might be that detection of individual nanoparticles and single molecules is not within reach via the measurement of their Rayleigh scattering\, interferometric scattering (iSCAT) microscopy introduced in 2004 has demonstrated the contrary. Indeed\, it is\nnow possible to reach a remarkable sensitivity in real-time detection down to single unlabeled proteins as light as 10 kDa. In this presentation\, I will discuss the most recent advances in iSCAT analysis\, including new applications to in nanoparticle sizing and three-dimensional imaging and tracking of sub-cellular structures in live cells.
URL:https://www.chemistry.ucla.edu/events/special-physical-chemistry-seminar-228-vahid-sandoghdar/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Physical Chemistry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221017T160000
DTEND;TZID=America/Los_Angeles:20221017T170000
DTSTAMP:20260614T123144
CREATED:20220901T223828Z
LAST-MODIFIED:20220921T230329Z
UID:23188-1666022400-1666026000@www.chemistry.ucla.edu
SUMMARY:Physical Chemistry Seminar 228: Christy Landes
DESCRIPTION:Prof. Landes Flyer \nTitle: Towards Predictive Protein Separations: Imaging Protein Dynamics at Nanoscale Interfaces \nAbstract: Recent efforts by our group and others have shown the promise of applying single molecule methods to link mechanistic detail about protein adsorption to macroscale observables. When we study one molecule at a time\, we eliminate ensemble averaging\, thereby accessing underlying heterogeneity. However\, we must develop new methods to increase information content in the resulting low density and low signal-to-noise data and to improve space and time resolution. \nI will highlight recent advances in super-resolution microscopy for quantifying the physics and chemistry that occur between target proteins and stationary phase supports during chromatographic separations. My discussion will concentrate on the newfound ability of super-resolved single protein spectroscopy to inform theoretical parameters via quantification of adsorption-desorption dynamics\, protein unfolding\, and nano-confined transport. Additionally\, I will discuss using phase manipulation to encode temporal and 3D spatial information\, and the opportunities and challenges associated with such imaging methods.
URL:https://www.chemistry.ucla.edu/events/physical-chemistry-seminar-228-christy-landes/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Physical Chemistry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221017T150000
DTEND;TZID=America/Los_Angeles:20221017T150000
DTSTAMP:20260614T123144
CREATED:20220921T214630Z
LAST-MODIFIED:20221007T231521Z
UID:24045-1666018800-1666018800@www.chemistry.ucla.edu
SUMMARY:Organic Student Seminar 248: Erin Bucci
DESCRIPTION:
URL:https://www.chemistry.ucla.edu/seminars/organic-student-seminar-2022-10-10/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Organic,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221012T160000
DTEND;TZID=America/Los_Angeles:20221012T171500
DTSTAMP:20260614T123144
CREATED:20220908T190808Z
LAST-MODIFIED:20220921T231741Z
UID:23599-1665590400-1665594900@www.chemistry.ucla.edu
SUMMARY:Jeffrey I. Zink Inorganic Chemistry Seminar 278: Van Sara Thoi
DESCRIPTION:Flyer: Prof. Van Sara Thoi Flyer \nMeet the Speaker: 11 a.m.\, YH 3096 \nTitle: Designing Functional Sites in Porous Materials for Energy Storage and Conversion \nAbstract: Despite their high theoretical specific energy of 2\,600 Wh kg-1\, the commercialization of lithium-sulfur batteries is hindered by irreversible capacity loss from the dissolution of polysulfide intermediates in the electrolyte solution. We report novel strategies to design reactive sites for polysulfide adsorption in metal-organic frameworks (MOFs) to improve capacity retention and ionic conductivity. Incorporation of redox-active moieties in the framework further enable fast charge and discharge capabilities. These design elements ultimately enhance the charge storage ability and cycle life of the batteries. In addition\, we present new methods to convert carbon dioxide to value-added products electrochemically. The introduction of charged organic additives to the electrolyte allows fine control over the interfacial proton concentration\, leading to high carbon product selectivity. Furthermore\, we demonstrate the feasibility of carbon dioxide as a feedstock for electrochemical C-N coupling. Our work demonstrates the importance of precisely engineered electrolyte-electrode interfaces for selective activation and transformation of small molecules.
URL:https://www.chemistry.ucla.edu/seminars/jeffrey-i-zink-inorganic-chemistry-seminar-278-sara-thoi/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Inorganic,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221006T160000
DTEND;TZID=America/Los_Angeles:20221006T170000
DTSTAMP:20260614T123144
CREATED:20220902T212400Z
LAST-MODIFIED:20220921T035801Z
UID:23343-1665072000-1665075600@www.chemistry.ucla.edu
SUMMARY:Houk-Jung Organic Colloquium 247: Phil Baran
DESCRIPTION:Prof. Baran Flyer \nTitle: Simplifying Synthesis with Electricity \nAbstract: Organic synthesis is one of the great branches of Chemistry that has had a profound impact on the betterment and advancement of civilization. In its most modern manifestations\, it renders the dream of alchemy (turning something worthless into something valuable) a reality. It places the practitioner into the role of artist\, engineer\, and astronaut. Thus\, advances in this field are inherently of interest to a broad audience. Predicting the specific developments that will alter the course of this field is difficult. This talk will use case-studies from our lab to demonstrate how one of the oldest and least expensive reagents on Earth\, electrons\, can facilitate new retrosynthetic disconnections and aid in the pursuit of simple\, ideal solutions to longstanding challenges.
URL:https://www.chemistry.ucla.edu/events/houk-jung-organic-colloquium-247-phil-baran/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Organic Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221005T160000
DTEND;TZID=America/Los_Angeles:20221005T171500
DTSTAMP:20260614T123144
CREATED:20220908T190536Z
LAST-MODIFIED:20220921T231553Z
UID:23595-1664985600-1664990100@www.chemistry.ucla.edu
SUMMARY:Jeffrey I. Zink Inorganic Chemistry Seminar 278: Joseph W. Kolis
DESCRIPTION:Flyer: Prof. Joseph W. Kolis Flyer \nMeet the Speaker: 11 a.m.\, YH 3096 \nTitle: Hydrothermal Synthesis of Metal Vanadates: From Lasers to Frustrated Magnets and Maybe Even Some Quantum Materials \nAbstract: The high-temperature hydrothermal method (with temperatures 5-700˚C\, pressures 200MPa) can be an excellent route to new materials\, often in the form of large\, high-quality single crystals. This talk will focus on the transition metal vanadates as a test bed for of this experimental method. The evolution from metal vanadate crystals as laser hosts to low dimensional magnetic structures to long-range frustration will be traced. The use of neutron diffraction to determine the magnetic structures of these materials will be discussed\, and the value of hydrothermal single crystal growth in this class of materials will be highlighted.
URL:https://www.chemistry.ucla.edu/seminars/jeffrey-i-zink-inorganic-chemistry-seminar-278-joseph-kolis/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Inorganic,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221003T160000
DTEND;TZID=America/Los_Angeles:20221003T170000
DTSTAMP:20260614T123144
CREATED:20220901T222134Z
LAST-MODIFIED:20220927T172547Z
UID:23179-1664812800-1664816400@www.chemistry.ucla.edu
SUMMARY:Physical Chemistry Seminar 228: David Waldeck
DESCRIPTION:Prof. Waldeck Flyer \nAdventures with Chiral Induced Spin Selectivity \nAbstract: Abstract: Since Louis Pasteur\, chemists have been fascinated by chirality\, however its connection with electron spin was not realized until the 21st century and its implications for chemistry and biochemistry is only beginning to be revealed. I will discuss chiral induced spin selectivity (CISS)\, which refers to the fact that charge polarization and charge transfer in chiral molecules (and materials) is accompanied by spin polarization and spin transfer. After I introduce some of the seminal works on CISS as background\, I will describe some of our recent studies that investigate the implications of CISS in chemistry. I will describe experiments that probe the spin-dependence of electronic interaction with chiral molecules and spin selectivity in electron transfer reactions. In addition\, I will show that chiral electrodes can be used to improve the selectivity of electrochemical reactions which involve radical intermediates.
URL:https://www.chemistry.ucla.edu/events/physical-chemistry-seminar-228-david-waldeck/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Physical Chemistry Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221003T150000
DTEND;TZID=America/Los_Angeles:20221003T155000
DTSTAMP:20260614T123144
CREATED:20220921T214630Z
LAST-MODIFIED:20220922T211803Z
UID:24041-1664809200-1664812200@www.chemistry.ucla.edu
SUMMARY:Organic Student Seminar 248: Jason Wang
DESCRIPTION:
URL:https://www.chemistry.ucla.edu/seminars/organic-student-seminar/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Organic,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20220929T160000
DTEND;TZID=America/Los_Angeles:20220929T170000
DTSTAMP:20260614T123144
CREATED:20220902T210426Z
LAST-MODIFIED:20220921T034829Z
UID:23335-1664467200-1664470800@www.chemistry.ucla.edu
SUMMARY:Houk-Jung Organic Colloquium 247: Javier Read De Alaniz
DESCRIPTION:Prof Read de Alaniz Flyer \nTitle: Simplifying Synthesis With Chemistry \nAbstract: Photons have multiple enabling advantages to control chemical reactions\, processes and stimuli-responsive materials. In this seminar\, I will discuss our groups effort to design and develop a new class of negative photochromic molecules termed DASA\, their incorporation into materials and subsequent effort to unlock their unique potential as multi-stage photoswitches.
URL:https://www.chemistry.ucla.edu/events/houk-jung-organic-colloquium-247-javier-read-de-alaniz/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Organic Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20220928T160000
DTEND;TZID=America/Los_Angeles:20220928T171500
DTSTAMP:20260614T123144
CREATED:20220908T185836Z
LAST-MODIFIED:20220921T224031Z
UID:23591-1664380800-1664385300@www.chemistry.ucla.edu
SUMMARY:Jeffrey I. Zink Inorganic Chemistry Seminar 278: Joshua Goldberger
DESCRIPTION:Flyer: Prof. Joshua Goldberger Flyer \nMeet the Speaker: 11 a.m.\, YH 3096 \nTitle: New Directions in Layered\, Anisotropic Materials \nAbstract: Layered and 2D materials are currently one of the most well-studied classes of solid-state compounds\, due to the plethora of unique physical phenomena found in these materials coupled with advances in the characterization of structure and properties down to the single layer scale. Here\, we will describe our recent work in the synthesis\, properties\, and applications of layered materials that exhibit n-type conduction and p-type conduction simultaneously across different crystallographic directions. Recently\, we discovered that NaSn2As2\, a 2D van der Waals material\, simultaneously exhibits p-type conduction along the in-plane direction and n-type behavior along the cross-plane direction\, a phenomenon we define as “goniopolarity”. We will establish the origin of this exotic behavior as well as the chemical design principles for creating new goniopolar materials\, which has allowed us to significantly expand the number of materials that exhibit this phenomenon. Finally\, considering that almost all modern electronic devices require the integration of p-type and n-type regions for functionality\, we will show that the unique charge separation in goniopolar materials can overcome limitations of energy-harvesting technologies ranging from thermoelectrics to photocatalysis.
URL:https://www.chemistry.ucla.edu/seminars/jeffrey-i-zink-inorganic-chemistry-seminar-278-joshua-goldberger/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Inorganic,Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20220922T160000
DTEND;TZID=America/Los_Angeles:20220922T170000
DTSTAMP:20260614T123144
CREATED:20220902T205511Z
LAST-MODIFIED:20220921T005606Z
UID:23327-1663862400-1663866000@www.chemistry.ucla.edu
SUMMARY:Houk-Jung Organic Colloquium 247: Clemence Corminbouef
DESCRIPTION:Prof Corminbouef Flyer \nTitle: NaviCat: Computational Tools to Navigate Molecular Catalyst Landscape \nAbstract: Over the last few years\, we have worked on an assortment of computational and digital tools aimed at accelerating the through exploration and optimization of homogeneous catalyst landscapes. These interoperable tools are assembled into the NaviCat (Navigating Catalysis) platform\, which includes: volcanic\, an automated generator of volcano plots and activity/\nselectivity maps; NaviCatGA\, a genetic algorithm-based catalyst optimizer; and additional pipelines that generate structures\, create catalyst libraries as well as statistical models and representations specifically developed to accelerate the exploration process. \nThe complementary nature of these tools will be demonstrated through optimizing the catalytic activity and selectivity of both prototypical classes of reactions and challenging organic processes. Overall\, the NaviCat platform aims to expand upon original data-driven tools and broaden their application in the field of computational homogeneous catalysis.
URL:https://www.chemistry.ucla.edu/events/houk-jung-organic-colloquium-247-clemence-corminbouef/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Organic Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20220921T160000
DTEND;TZID=America/Los_Angeles:20220921T171500
DTSTAMP:20260614T123144
CREATED:20220908T185314Z
LAST-MODIFIED:20220921T013614Z
UID:23586-1663776000-1663780500@www.chemistry.ucla.edu
SUMMARY:Jeffrey I. Zink Inorganic Chemistry Seminar 278: Neil Tomson
DESCRIPTION:Flyer: Prof. Neil Tomson \nTitle: Ligand Flexibility in Surface-Inspired Cluster Chemistry \nAbstract: Metallic surfaces perform many chemical transformations that hold promise for the future energy economy\, including dinitrogen reduction\, ammonia oxidation\, and alkane synthesis\, but surfaces are difficult to tune\, limiting chemists’ ability to improve their efficiencies. Molecular cluster complexes inspired by surface chemistry have been studied for decades to capitalize on the advantages of metallic surfaces while avoiding the scaling relationships that govern their activities. Progress in this area has been hampered\, however\, by the lack of ligand architectures able to provide an appropriate degree of geometric and electronic flexibility to the cluster core. \nThis talk will describe our use of macrocyclic\, multi-nucleating ligands that have been designed to bind small metal clusters (2-4 metal atoms) in a way that mimics M–M bonding. Doing so allows for both facile electron redistribution within the cluster-ligand assembly and a high density of thermally accessible electronic states. These ligands have the added advantage of providing the geometric flexibility needed for stabilizing a range of surface-relevant species. Examples include diiron dinitrogen complexes that exist in a geometry reminiscent of the side-on binding of dinitrogen to the Mittasch catalyst\, a diiron-supported sp-hybridized bridging nitride that converts into an sp3-hybridized bridging amide following hydrogen atom transfer\, and the first (putative) dicobalt bridging nitride – a highly reactive species that mimics aspects of surface nitrides that develop during ammonia oxidation in the Ostwald Process. Particular attention will be paid to the electronic structures of an electrophilic diiron bridging nitrides\, which appears to exhibit a sub-valent oxidation state.
URL:https://www.chemistry.ucla.edu/seminars/jeffrey-i-zink-inorganic-chemistry-seminar-278-neil-tomson/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Inorganic,Seminars
END:VEVENT
END:VCALENDAR