UCLA

Saul Winstein Lecture: Prof. Matthew Sigman
2024-11-07 16:00 - 17:00 (America/Los_Angeles) | Mani L. Bhaumik Centennial Collaboratory, 607 Charles E. Young Dr., East, Los Angeles, CA, 90095, United States

Dickerson Biochemistry Seminar Series - Joe Loo and Stefan Petrovic
2024-11-08 15:30 - 17:00 | Collaboratory Yoo Seminar & Conference Hall YH4222

Jeffrey I. Zink Inorganic Chemistry Seminar Series – Prof. Ellen Matson
2024-11-13 16:00 - 17:00 | Collaboratory Yoo Seminar & Conference Hall YH4222
Flyer: Prof. Ellen M. Matson Flyer
Title: Structure-function Relationships that Dictate Proton Coupled Electron Transfer at the Surfaces of Polyoxometalate Clusters
Abstract:While the dynamics of proton- and electron-transfer at metal oxides have been studied extensively in the field of electrochemical energy storage, researchers have only very recently begun to understand how these process play out on molecular length scales and in the presence of small-molecule substrates. The latter is notable, considering that redox-active metal oxides are widely used in thermal and electrochemical catalytic processes. Further advances in the effective use of metal oxides in electrochemical catalysis will require improved understanding of elementary charge-transfer reaction mechanisms. Our research team has been studying the interfacial reactivity of reducible metal oxides using atomically precise, polyoxometalate clusters as models for extended materials. Polyoxometalates (POMs) consist of three of more redox-active transition metal oxyanions that are linked together by bridging oxide units to form three dimensional structures. These self-assembled clusters are well-positioned to provide insight into the surface chemistry of reducible metal oxides. This talk will focus on the synthesis and characterization of reduced POMs, which have provided our research group with opportunities to investigate factors that dictate mechanisms of H-atom uptake and transfer at metal oxide surfaces. Collectively, our studies inform our understanding of proton-dependent reactivity of metal oxide surfaces, toward the design of materials capable of converting chemical pollutants into energy-rich fuels.

Bristol-Myers Squibb Lecture
2024-11-14 15:00 - 17:00 | Collaboratory Yoo Seminar & Conference Hall YH4222
BMS Seminar Flyer

Dickerson Biochemistry Seminar Series - Rob Clubb and Bill Gelbart
2024-11-15 15:30 - 17:00 | Collaboratory Yoo Seminar & Conference Hall YH4222

Chem 248 Organic Chemistry Student Seminar: Neyci Estefania Gutierrez Valencia
2024-11-18 15:00 - 16:00 | Collaboratory Yoo Seminar & Conference Hall YH4222

Physical Chemistry Seminar 228: Prof. Teresa Head-Gordon
2024-11-18 16:00 - 17:00 | Collaboratory Yoo Seminar & Conference Hall YH4222

Jeffrey I. Zink Inorganic Chemistry Seminar Series – Prof. Timothy Su
2024-11-20 16:00 - 17:00 | Collaboratory Yoo Seminar & Conference Hall YH4222
Flyer: Prof. Timothy Su Flyer
Title: Sila-Diamondoids: Atomically Precise Clusters of Crystalline Silicon
Abstract: This talk will describe the synthesis, derivatization, and quantum transport properties of silicon diamondoids—atomically precise clusters of crystalline silicon. First, we describe strategies for the functionalization of the fundamental silicon diamondoid cluster, sila-adamantane. Mechanistic insights support that an aluminate-stabilized silylium at the 2-position of sila-adamantane is the terminal intermediate in its isomerization synthesis; we can intercept this intermediate to install halides at the 2-position. In addition, we can tetra-substitute sila-adamantane at its bridgehead positions with the same or different functional group, or precisely edit the skeletal structure of the adamantyl core by installing up to four Ge atom dopants at the bridgehead positions. We can extend this strategy to access, for the first time, the all-germanium adamantane. We have also developed radical-mediated approaches to catenate these clusters together to make supermolecules out of sila-diamondoid superatoms. As sila-adamantane represents the ultimate limit of miniaturization for nanocrystalline silicon, these regioselective approaches allow us to probe structure-property relationships in cluster models of silicon semiconductors at an atomically exact level. To showcase this, we show how the symmetry and dimensionality of sila-adamantane gives rise to unusual quantum interference effects in conductive single-molecule junctions studied with the scanning tunneling microscopy break-junction (STM-BJ) technique that may be controlled by chemical substitution. Finally, we exploit this phenomenon to create single-molecule conductance switches where we can mechanically toggle between different conductive pathways through the diamondoid cluster.

Houk-Jung Organic Colloquium: Prof. Jeff Martell
2024-11-21 16:00 - 17:00 | Mani L. Bhaumik Centennial Collaboratory, 607 Charles E. Young Dr., East, Los Angeles, CA, 90095, United States

Dickerson Biochemistry Seminar Series - Rosalie Lawrence and Avi Samelson
2024-11-22 15:30 - 17:00 | Collaboratory Yoo Seminar & Conference Hall YH4222

Chem 248 Organic Chemistry Student Seminar: Benjamin Janda
2024-11-25 15:00 - 16:00 | Collaboratory Yoo Seminar & Conference Hall YH4222

Physical Chemistry Seminar 228: Prof. Judy Kim
2024-11-25 16:00 - 17:00 | Collaboratory Yoo Seminar & Conference Hall YH4222

Chem 248 Organic Chemistry Student Seminar: Braden Chaffin
2024-12-02 15:00 - 16:00 | Collaboratory Yoo Seminar & Conference Hall YH4222

Physical Chemistry Seminar 228: Prof. Brad Chmekla
2024-12-02 16:00 - 17:00 | Collaboratory Yoo Seminar & Conference Hall YH4222

Jeffrey I. Zink Inorganic Chemistry Seminar Series – Prof. Eugene Chen
2024-12-04 16:00 - 17:00 | Collaboratory Yoo Seminar & Conference Hall YH4222

OCDS Sponsored Seminar - Jessica Kisunzu
2024-12-05 16:00 - 17:00 | Mani L. Bhaumik Centennial Collaboratory, 607 Charles E. Young Dr., East, Los Angeles, CA, 90095, United States

Dickerson Biochemistry Seminar Series - Danielle Schmitt and Jose Rodriguez
2024-12-06 15:30 - 17:00 | Collaboratory Yoo Seminar & Conference Hall YH4222

Winter Holiday Celebration
2024-12-09 15:30 - 18:30 | CA

BORAM 18 Conference
2024-12-15 07:00 - 2024-12-19 18:00 | Collaboratory Yoo Seminar & Conference Hall YH4222
https://www.boram18.com/

Jeffrey I. Zink Inorganic Chemistry Seminar Series – Prof. Milad Abolhasani
2025-01-08 16:00 - 17:00 | Collaboratory Yoo Seminar & Conference Hall YH4222

Dickerson Biochemistry Seminar Series - Reginald Mcnulty - University of California, Irvine
2025-01-10 15:30 - 17:00 | Collaboratory Yoo Seminar & Conference Hall YH4222

Chem 248 Organic Chemistry Student Seminar: Elizabeth Foker
2025-01-13 08:00 - 17:00 | Mani L. Bhaumik Centennial Collaboratory, 607 Charles E. Young Dr., East, Los Angeles, CA, 90095, United States

Physical Chemistry Seminar 228: Prof. David Bensimon
2025-01-13 16:00 - 17:00 | Collaboratory Yoo Seminar & Conference Hall YH4222

Houk-Jung Organic Colloquium: Prof. Bernhard Breit
2025-01-16 16:00 - 17:00 | Collaboratory Yoo Seminar & Conference Hall YH4222

Postponed! Dickerson Biochemistry Seminar Series - Olivia Rissland - University of Colorado School of Medicine
2025-01-17 15:30 - 17:00 | Collaboratory Yoo Seminar & Conference Hall YH4222
The Biochem Seminar on Friday 1/17/25 will be moved to Friday 6/6/25

Special Chemistry Seminar: Xiang Sun
2025-01-22 14:30 - 15:30 | Collaboratory Yoo Seminar & Conference Hall YH4222

Jeffrey I. Zink Inorganic Chemistry Seminar Series – Prof. Brian Long
2025-01-22 16:00 - 17:15 | Collaboratory Yoo Seminar & Conference Hall YH4222

Houk-Jung Organic Colloquium: Prof. Cody Pitts
2025-01-23 16:00 - 17:00 | Mani L. Bhaumik Centennial Collaboratory, 607 Charles E. Young Dr., East, Los Angeles, CA, 90095, United States

Dickerson Biochemistry Seminar Series - Katie Hatstat - University of California, San Francisco
2025-01-24 15:30 - 17:00 | Collaboratory Yoo Seminar & Conference Hall YH4222

Chem 248 Organic Chemistry Student Seminar: Ferdawss Ihiri
2025-01-27 15:00 - 16:00 | Collaboratory Yoo Seminar & Conference Hall YH4222
