Kavli Foundation Lecture Series
The Kavli Foundation Lecture Series* promotes groundbreaking discovery and public understanding of the world’s mounting challenges and how chemistry can provide solutions.
* Supported by The Kavli Foundation
The Fred Kavli Foundation Innovations in Chemistry Lecture
Monday March 17, 2014, Dallas Convention Center
5:30 – 6:30 PM
Dr. John A. Rogers
Swanlund Professor of Materials Science and Engineering
Department of Chemistry
University of Illinois at Urbana-Champaign
A remarkable feature of the modern integrated circuit is its ability to operate in a stable fashion, with almost perfect reliability. Recently developed classes of electronic materials create an opportunity to engineer the opposite outcome, in the form of devices that dissolve completely in water, with harmless end products. The enabled applications range from ‘green’ consumer electronics to bio-resorbable medical implants – none of which would be possible with technologies that exist today. This talk summarizes recent work on this physically ‘transient’ type of electronics, from basic advances in materials chemistry, to fundamental studies of dissolution reactions, to engineering development of complete sets of device components, sensors and integrated systems. An ‘electroceutical’ bacteriocide designed for treatment of surgical site infections provides an application example.
Professor John A. Rogers obtained BA and BS degrees in chemistry and in physics from the University of Texas, Austin, in 1989. From MIT, he received SM degrees in physics and in chemistry in 1992 and the PhD degree in physical chemistry in 1995. From 1995 to 1997, Rogers was a Junior Fellow in the Harvard University Society of Fellows. He joined Bell Laboratories as a Member of Technical Staff in the Condensed Matter Physics Research Department in 1997, and served as Director of this department from the end of 2000 to 2002. He is currently Swanlund Chair Professor at University of Illinois at Urbana/Champaign, with a primary appointment in the Department of Materials Science and Engineering, and joint appointments in several other departments, including Chemistry. He is Director of the Seitz Materials Research Laboratory.
Rogers’ research includes fundamental and applied aspects of materials for unusual electronic and photonic devices, with an emphasis on bio-integrated and bio-inspired systems. He has published more than 400 papers and is inventor on over 80 patents, more than 50 of which are licensed or in active use. Rogers is a Fellow of the IEEE, APS, MRS and AAAS, and he is a member of the National Academy of Engineering. His research has been recognized with many awards, including a MacArthur Fellowship in 2009, the Lemelson-MIT Prize in 2011, the MRS Mid-Career Researcher Award and the Robert Henry Thurston Award (American Society of Mechanical Engineers) in 2013, and the 2013 Smithsonian Award for Ingenuity in the Physical Sciences.
Monday March 17, 2014, Dallas Convention Center
4:00 – 5:00 PM
Dr. Emily A. Weiss
Associate Professor and Irving M. Klotz Research Professor
Department of Chemistry, Northwestern University
The behavior of electrons at nanoscopic organic/inorganic interfaces
The behavior of electrons and energy at interfaces between different types or phases of materials is an active research area of both fundamental and technological importance. Such interfaces often result in sharp free energy gradients that provide the thermodynamic driving force for some of the most crucial processes for energy conversion: migration of energy and charge carriers, conversion of excited states to mobile charge carriers, and redox-driven chemical reactions. Nanostructured materials are defined by high surface area-to-volume ratios, and should therefore be ideal for the job of energy conversion; however, they have a structural and chemical complexity that does not exist in bulk materials, and which presents a formidable challenge: mitigate or eliminate energy barriers to electron and energy flux that inevitably result from forcing dissimilar materials to meet in a spatial region of atomic dimensions. Chemical functionalization of nanostructured materials is perhaps the most versatile and powerful strategy for controlling the potential energy landscape of their interfaces, and for minimizing losses in energy conversion efficiency due to interfacial structural and electronic defects. Using metal and semiconductor nanoparticles as model systems, this talk will explore the power of tuning the chemistry at the organic-inorganic interface within colloidal semiconductor and metal nanoparticles as a strategy for controlling their structure and properties.
Emily Weiss is an Associate Professor and the Irving M. Klotz Research Professor in the Department of Chemistry at Northwesern University. Emily earned her PhD from Northwestern in 2005, advised by Mark Ratner and Michael Wasielewski. Her graduate work focused on magnetic superexchange interactions of radical ion pairs created by electron transfer within organic donor-acceptor systems. Emily did postdoctoral research at Harvard under George M. Whitesides from 2005-2008 as a Petroleum Research Fund Postdoctoral Energy Fellow, and started her independent career at Northwestern in Fall 2008.
Emily’s group studies electronic processes at organic-inorganic interfaces within colloidal and semiconductor and metal nanoparticles. The objectives of this research are to understand the mechanisms of conversion of energy from one class to another (light, heat, chemical potential, electrical potential) at interfaces, to understand the behavior of quantum confined systems far from equilibrium, and to design and synthesize nanostructures that are new combinations of organic and inorganic components.
Emily’s contributions to physical and materials chemistry are reflected in a number of recognitions by funding agencies and the scientific community. Upon her arrival at Northwestern in Fall 2008, Emily was selected as a Dow Teacher-Scholar and was the recipient of a Dreyfus New Faculty Award. Emily has since earned an Air Force Young Investigator Award, a DOE Early Career Research Award, a Dreyfus Foundation Postdoctoral Program in Environmental Chemistry grant, a Presidential Early Career Award for Scientists and Engineers (PECASE) through the Army Research Office, a Packard Foundation Fellowship, an A.P. Sloan Research Fellowship, and a Northwestern-Argonne Early Career Investigator Award for Energy Research.