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Phosphines and Phosphinocatalysis

Wednesday, March 25, 2015, 4:00 PM - 5:00 PM
Dr. Ohyun Kwon, Professor, Department of Chemistry and Biochemistry, University of California

Soft nucleophilic phosphinocatalysis has been known since the 1960s as a result of the pioneering work of Horner, Price, Rauhut?Currier, and Morita. In the 1990s, Trost and Lu made important discoveries, reporting isomerization, umpolung addition, an more  »


On the Origin of Species by Means of Genetic Incompatibilities

Tuesday, March 24, 2015, 12:30 PM - 1:30 PM
Ricardo Azevedo, Associate Professor, Biology and Biochemistry Department, University of Houston

Abstract: Most species are kept distinct by incompatibilities between the genes they carry. These genetic incompatibilities cause hybrids between the species to have low fitness. I consider the possibility that combinations of several incompatibilit more  »


CGSA Career Seminar: "Your Career in Chemistry: Impacting the World"

Thursday, March 19, 2015, 4:00 PM - 5:00 PM
Dr. Scott Leigh, R&D Director - Americas, Huntsman Performance Products

Happy Hour to follow the lecture in the Dell Butcher Foyer 5:00pm - 6:30pm more  »


Solar-Driven Water Splitting

Wednesday, March 18, 2015, 4:00 PM - 5:00 PM
Dr. Harry Gray, Arnold O. Beckman Professor of Chemistry; Founding Director, Beckman Institute, California Institute of Technology

Investigators in the NSF CCI Solar Fuels Program are working on syntheses of light absorbers and catalysts to be employed as components in devices for solar-driven water splitting. Catalysts both for water oxidation to dioxygen (OER) and proton reduc more  »


Short Stories in Membrane Biophysics of How Complex Behavior Arises from Minimal Components

Tuesday, March 17, 2015, 12:30 PM - 1:30 PM
Sarah L. Keller, Professor, Departments of Chemistry and Physics University of Washington, Seattle

Abstract: This talk will briefly summarize research projects inspired by biological questions. Asking how molecules on the early Earth assemble into protocells of RNA surrounded by a membrane led to our discovery that the building blocks of RNA (nuc more  »

Lecture/Lecture Series

TURNER LECTURE: DNA-mediated Signaling

Friday, March 13, 2015, 4:00 PM - 5:00 PM
Dr. Jacqueline K. Barton, Hanisch Memorial Professor of Chemistry and Chair, Division of Chemistry and Chemical Engineering, California Institute of Technology

We think of the DNA double helix as the library of the cell, encoding all that we are. But the DNA helix can also serve as a conduit for the flow of electrons, a medium for signaling. Like a stack of copper pennies, the stack of DNA base pairs can b more  »

Lecture/Lecture Series

TURNER LECTURE: Transcription Factor Antagonists: From Discovery to Oncology

Thursday, March 12, 2015, 4:00 PM - 5:00 PM
Dr. Peter B. Dervan, Bren Professor of Chemistry, Division of Chemistry & Chemical Engineering California Institute of Technology

Pyrrole-imidazole polyamides are synthetic molecules programmed to read the DNA double helix by a set of simple chemical principles. These small molecules achieve affinities comparable to DNA-binding proteins and are cell permeable. Research effort more  »


Clash of Populations: Host-Microbe Interactions in C. Elegans

Tuesday, March 10, 2015, 12:30 PM - 1:30 PM
Erel Levine, Assistant Professor, Department of Physics and Center for Systems Biology, Harvard University

Abstract: Bacterial infection is characterized by a multi-scale noisy dynamics with unpredictable outcome. Quantitative understanding of these processes is limited in no small part due to the lack of clear experimental data. In my talk I introduce ba more  »

Thesis Defense

Self-Assembling MultiDomain Peptides as Scaffolds for Tissue Engineering

Monday, March 9, 2015, 3:00 PM - 5:00 PM
Marci Kang, Doctoral Candidate

Creating a new generation of biomaterials to support tissue engineering efforts is critical to the development of functional tissues. This thesis describes the initial phases of biomaterial development for MultiDomain Peptides (MDPs): from their desi more  »



Sequestered: The Assembly and Function of Protein Organelles

Tuesday, February 24, 2015, 12:30 PM - 1:30 PM
Dave Savage, Assistant Professor, Departments of Molecular & Cell Biology and Chemistry, UC, Berkeley

Abstract: Cells use structure to catalyze and facilitate the chemical reactions of metabolism. This principle is embodied by bacterial microcompartments (BMCs), a class of protein-based organelles that are found in in vivo. Here, I will present recen more  »


Tailoring the Third-Dimension in Layered Materials: Direct Synthesis of Layered Intercalation Compounds and Single-Layer Nanosheets

Monday, February 23, 2015, 4:00 PM - 5:00 PM
Dr. Luyi Sun, Associate Professor of Chemical & Biomolecular Engineering, Institute of Materials Science at the University of Connecticut

Layered materials have been well investigated and have found widespread application. Traditionally, one can only alter the lateral dimension (X and Y directions) of layered compounds. The layer thickness or composition in the Z direction is hard to b more  »


Small Quantum Dots for Nanometer Accuracy and Resolution on Living Synapses of Neurons

Wednesday, February 18, 2015, 4:00 PM - 5:00 PM
Dr. Paul R. Selvin, Professor, Department of Physics and Biophysics, University of Illinois at Urbana-Champaign

We have recently made small quantum dots (< 10 nm in diameter) that are extremely bright and photostable, enabling single molecule detection on specifically labelling receptor proteins in living (cultured) neurons. We have studies two of the most com more  »


Getting Together: What Can Enzyme Clustering Do for Metabolism?

Tuesday, February 17, 2015, 12:30 PM - 1:30 PM
Ned Wingreen, Professor, Department of Molecular Biology, Princeton University

Abstract: Metabolism is the set of enzymatic reactions that cells use to generate energy and biomass. Interestingly, recent studies suggest that many metabolic enzymes assemble into large clusters, often in response to environmental conditions. Theor more  »


How Politics are Impacting Chemistry and Basic Research

Thursday, February 12, 2015, 4:00 PM - 5:00 PM
Dr. Ryan Davison, Manager, Advocacy, American Chemical Society

A general political update about the current dynamics/dysfunction on Capitol Hill, a specific political update about the members of Congress and committees that most effect science and research, and a legislative update about recent/current bills in more  »


Design Ability of Peptide-Based Materials

Wednesday, February 11, 2015, 4:00 PM - 5:00 PM
Dr. Vincent Conticello, Professor, Department of Chemistry, Emory University

Structurally defined materials on the nanometer length-scale have been historically the most challenging to rationally construct and the most difficult to structurally analyze. Sequence-specific biomolecules, i.e., proteins and nucleic acids, have ad more  »

Lecture/Lecture Series

FRANKLIN LECTURE Mulling Over Emulsions: Molecular Assembly at Oil-Water Interfaces

Thursday, February 5, 2015, 4:00 PM - 5:00 PM
Dr. Geraldine Richmond, Presidential Chair and Professor of Chemistry, University of Oregon

Since the Romans first spread oil on water to calm the raging seas, curiosity has persisted about the unique nature of the interface between water and a hydrophobic liquid including how surfactants and dispersants adsorb at this unique junction. This more  »


The dirtiest parts of physical chemistry: What happens to molecules *after* stimulated absorption?

Wednesday, February 4, 2015, 4:00 PM - 5:00 PM
Dr. Joseph Subotnik, The University of Pennsylvania

In this talk, he will give an overview of how we can model electronic relaxation for complex molecular problems. Our approach will be the quick and dirty surface hopping algorithm. He will show how surface hopping works, discuss its physical origins more  »

Thesis Defense

Nanomaterials for Hydrocarbon Exploration, Acid Gas Removal and Energy Devices

Wednesday, February 4, 2015, 3:00 PM - 5:00 PM
Gedeng Ruan, Doctoral Candidate

This thesis discusses the synthesis and characterization of several different nanomaterials as well as their applications to oil and energy industries. The nanomaterials studied here include asphalt-derived high surface area activated porous carbon, more  »


Spatio-temporal Model for Silencing of Mitotic Spindle Assembly Checkpoints

Tuesday, February 3, 2015, 12:30 PM - 1:30 PM
Jian Liu, Investigator, Theoretical Cellular Physics, National Institutes of Health

Abstract: The spindle assembly checkpoint arrests mitotic progression until each kinetochore secures a stable attachment to the spindle. Despite fluctuating noise, this checkpoint remains robust and remarkably sensitive to even a single unattached ki more  »


Thesis Defense

Synthesis and Applications of Graphene Based Nanomaterials

Thursday, January 29, 2015, 8:45 AM - 10:45 AM
Zhiwei Peng, Doctoral Candidate

Graphene, a two-dimensional sp2-bonded carbon material, has recently attracted major attention due to its excellent electrical, optical and mechanical properties. Depending on different applications, graphene and its derived hybrid nanomaterials can more  »


Lewis acidic and redox properties of organoantimony derivatives – Applications in anion sensing and halogen photoreductive elimination

Wednesday, January 28, 2015, 4:00 PM - 5:00 PM
François P. Gabbaï, Texas A&M University

While it is generally perceived that strong Lewis acidity is the preserve of group 13 elements, the pioneering work of Olah shows that this property can also be expressed in the group 15, especially with antimony. As part of our continuing interest i more  »


Scaling in Cellular Dynamics

Tuesday, January 27, 2015, 12:30 PM - 1:30 PM
Aaron Dinner, Professor, Department of Chemistry, The University of Chicago

Abstract: The dynamics of living systems are noisy. These fluctuations contain information about contributing microscopic mechanisms, and this information can be extracted by quantitative analysis of experimental imaging data together with mathematic more  »


Shaping Metallic Nanoparticles toward Integrated Plasmonics and Catalysis

Monday, January 26, 2015, 4:00 PM - 5:00 PM
Hui Wang, The University of South Carolina

Noble metal nanoparticles have been of tremendous interest because of their intriguing size- and shape-dependent plasmonic and catalytic properties. The combination of tunable plasmon resonances with superior catalytic activities on the same nanopart more  »

Thesis Defense

One- and Two-Dimensional sp2-Carbon Nanomaterials: Synthesis, Properties, and Applications

Monday, January 26, 2015, 1:00 PM - 3:00 PM
Abdul-Rahman Raji, Doctoral Candidate

The unifying objective of this thesis is to synthesize, control, modify, hybridize, interface, understand, and apply one- and two-dimensional sp2-carbon nanomaterials. The materials include graphene (2D), carbon nanotubes (1D), and graphene nanoribbo more  »