Dr. Javier Vela | Iowa State University | “Molecular Control of Nanoscale Composition, Morphology and Function: From Axially Anisotropic Nanorods to Surface Doped Quantum Dots”
Event Date:
April 20, 2015 – 4:00 PM to April 21, 2015 – 4:59 PM
Location:
Burson 115
Event Date:
April 20, 2015 – 4:00 PM to April 21, 2015 – 4:59 PM
Location:
Burson 115
|
Department of Chemistry
|
Dr. Javier Vela
Iowa State University
Will be presenting
“Molecular Control of Nanoscale Composition,Morphology and Function:
From Axially Anisotropic Nanorods to Surface Doped Quantum Dots”
Abstract:
Semiconductor nano crystals (quantum dots, rods, wires, plates) have been a topic of much research interest due to their remarkable optical properties, which include: Large extinction coefficients, size- shape- and composition-tunable absorption and emission energies, and long exciton lifetimes. Our group has developed molecular reactivity approaches that allow to precisely control the relative rates of nucleation and growth of semiconductor nano crystals and, with them, the outcome of their syntheses (in terms of composition and morphology). We have also used molecular inspired spectroscopic characterization to probe the effect of surface ligand composition and loading (avidity) on the chemical and biophysical behavior of colloidal nano crystals. These and similar approaches to control the internal architecture, surface composition and spatial configuration of nanoscale materials will allow to engineer energy flows at the nanoscale, and will become critical to their applications in catalysis, sunlight energy harvesting and conversion, and biological imaging and tracking.
Bio:
Dr. Javier Vela received his B.S. from the National University of Mexico in 2001. He obtained his Ph.D. degree working with Prof. Patrick L. Holland at the University of Rochester in 2005, respectively. He was a postdoctoral research associate with Prof. Richard F. Jordan at the University of Chicago from 2005 to 2006, and a Director’s Postdoctoral Fellow in the team of Jennifer A. Hollingsworth and Victor I. Klimov at Los Alamos National Laboratory’s Center for Integrated Nanotechnologies from 2007 to 2009. Dr. Vela received the ACS Inorganic Young Investigator Award in 2006, the NSF CAREER Award in 2013, the LAS Early Achievement in Research Faculty Award in 2014, and the Stanley C. Israel Midwest Award for Advancing Diversity in the Chemical Sciences in 2014.
Monday, April 20, 2015 @ 4:00pm Burson 115
Refreshments served @ 3:45