UCLA

No Seminar
2022-04-28 16:00, 2022-04-14 16:00, 2022-04-07 16:00 (America/Los_Angeles)

Chem 278: Prof. Carl K. Brozek
2022-04-27 16:00
Conductivity and Dynamic Bonding in Nanoscale MOFs

Chem 263 Student Exit Seminar- Cooper Jamieson
2022-04-26 16:00

Chem 228: Prof. Rick Heller
2022-04-25 16:00

Chem 268 - Naomi Courtemanche
2022-04-22 15:30
“Actin filament assembly mediated by formins: All roads lead to the barbed end”
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Organic Colloquium - Prof. Andrew McNally
2022-04-21 16:00
Selective Functionalization of Pyridines, Diazines and Pharmaceuticals via Unconventional Intermediates

Chem 218 Student Exit Seminar - Chris Dunham
2022-04-21 12:00

Chem 278: Prof. Adam S. Veige
2022-04-20 16:00
TBA

Chem 263/Chemical Biology Seminar-Prof. Pamela Chang
2022-04-19 16:00
Questions? Please contact Isabella Diaz at maynardadmin@chem.ucla.edu

Chem 228: Prof. Shu-ou Shan
2022-04-18 16:00
“Nascent Protein Selection and Triage at the Ribosome”

Chem 268 (Midstream Presentation) - Andrew Goring and Ashley Julio
2022-04-15 15:30

Chem 278: Prof. Alina M. Schimpf
2022-04-13 16:00
“Solution-phase routes to inorganic solid-state materials”

Chem 263/Chemical Biology Seminar-Professor Jeremy Baskin
2022-04-12 16:00

NSF Center for Integrated Catalysis Webinar Series
2022-04-12 12:30
Stereoconvergent and Stereodivergent Synthesis with Configurationally Unstable Compounds

Chem 268 (Midstream Presentation) - Noelle Novales and Sean Atamdede
2022-04-08 15:30

Chem 278: Prof. Robert J. Gilliard
2022-04-06 16:00
“Beryllium, Boron, and Bismuth: From Fundamental Redox Chemistry to Luminescent Materials”

Chem 263 Student Exit Seminar- Christopher Sue
2022-04-05 16:00

Chem 228: Prof. Dan Neumark
2022-04-04 16:00
“Attosecond Science and its Applications to Atomic, Molecular, and Chemical Physics”

Chem 268 (Midstream Presentation) - Alexander Stevens
2022-04-01 15:30

Organic Colloquium - Prof. Vincent N. G. Lindsay
2022-03-31 16:00
Stereoselective Synthesis and Applications of Sulfonylcyclopropanols as Modular Cyclopropanone and Homoenolate Equivalents

Chem 218 Student Exit Seminar: Gail Vinnacombe
2022-03-31 12:00
“Surface Functionalization, Patterning, and in Situ Growth of Gold Nanoparticles”

The 2022 Cabot Microelectronics Corp. Lecture
2022-03-30 16:00
A new era in solar energy conversion and optoelectronics enabled by the humble halide perovskites?

Chem 278: Prof. Karsten Meyer
2022-03-29 16:00
“Super-Oxidized” Iron Nitrido/Imido and “Super-Reduced” Iron Nitrosyl Complexes in tris-Carbene Coordination Spheres – and how Iron Really Feels About it

Chem 228: Prof. Thuc-Quyen Nguyen
2022-03-28 16:00
“Understanding Unconventional Doping Mechanisms in Organic Semiconductors”

Special Organic Colloquium - Prof. Joshua G. Pierce
2022-03-24 16:00
Complex Molecule Synthesis at the Interface of Biology: Adventures in Medicinal Chemistry and Chemical Biology

Chem 218 Student Exit Seminar: Yiyi Yao
2022-03-17 12:00
“Structural Stability and Phase Transformation Behavior in Nanostructured Energy Storage Materials”

Chem 278: Prof. Kimberly A. See
2022-03-16 16:15
“One is the Loneliest Number: Multivalent and Multielectron Processes for Next-Generation Batteries”

Catalysis Lectureship 2022 - Christophe Copéret, ETH Zürich
2022-03-16 14:30
Bridging the gap between well-defined and industrial catalysts via a molecular approach
Industrial processes, in particular large-scale ones, mostly rely on heterogeneous catalysts. The search for more sustainable processes and the changes in environmental policies impose the continuous development of improved catalyst performances and catalytic processes, as well as the exploration of alternative routes. However, due to their inherent complexity, heterogeneous catalysts are mostly developed empirically rather than through detailed structure – activity relationships as the nature of the active sites are rarely known.
In this context, our group has been interested in understanding and controlling chemistry on surfaces, with the ultimate goal to generate isolated metal sites with defined chemical environment.[1] This approach has been used to develop highly active and selective single-site catalysts that can overperformed their homogeneous counterparts, but it can also provide useful information to understand and further develop industrial catalysts[2] or to study much more complex systems such as supported nanoparticles, where support effects, interfaces, alloying… remain complex to understand at the molecular level.
This lecture will be developed around these themes and will show that a careful characterization of surface sites on a molecular level is key to develop high performance catalysts and to bridge the gap between fundamental and applied catalysis.[3]
References:
1 C. Copéret, A. Comas-Vives, M. P. Conley, D. Estes, A. Fedorov, V. Mougel, H. Nagae, F. Núñez-Zarur, P. A. Zhizhko Surface Organometallic and Coordination Chemistry towards Single-Site Heterogeneous Catalysts: Strategies, Methods, Structures, and Activities. Chem. Rev. 2016, 16, 323-421. DOI: 10.1021/acs.chemrev.5b00373
2 C. Copéret, F. Allouche, K. W. Chan, M. P. Conley, M. F. Delley, A. Fedorov, I. B. Moroz, V. Mougel, M. Pucino, K. Searles, K. Yamamoto, P. A. Zhizhko, Bridging the Gap between Industrial and Well-Defined Supported Catalysts. Angew. Chem. Int. Ed. 2018, 57, 6398-6440. DOI: 10.1002/anie.201702387
3 a) C. Copéret Single-Sites and Nanoparticles at Tailored Interfaces Prepared via Surface Organometallic Chemistry from Thermolytic Molecular Precursors. Acc. Chem. Res. 2019, 52, 1697-1708. DOI: 10.1021/acs.accounts.9b001388. b) Deciphering Metal-Oxide and Metal-Metal Interplay via Surface Organometallic Chemistry: A Case Study with CO2 Hydrogenation to Methanol. S. R. Docherty, C. Copéret J. Am. Chem. Soc. 2021, 143, 6767–6780. DOI: 10.1021/jacs.1c02555. c) Heterogeneous Alkane Dehydrogenation Catalysts Investigated via a Surface Organometallic Chemistry Approach. S. R. Docherty, L. Rochlitz, P.-A. Payard, C. Copéret Chem. Soc. Rev. 2021, 50, 5806 – 5822. DOI: 10.1039/d0cs01424a.
