Friday, November 10, 4:00 pm, Walter Library 402
Tianquan Tim Lian
Professor & Director of Graduate Studies,
Dept. of Chemistry, Emory University;
Atlanta, GA

Seminar: "Photoinduced electron transfer at the molecule-nanoparticle interface"

 

 

Electron transfer at the molecule-nanoparticle interface is a fundamental process that plays important roles in many applications of nanoparticles, such as hybrid molecule/semiconductor solar cells, molecular electronics and catalysis. We are carrying out systematic studies of photoinduced electron transfer from molecular adsorbates to semiconductor nanoparticles using femtosecond transient absorption spectroscopy. Electron transfer dynamics at the single-molecule-nanoparticle junction is also probed by single molecule fluorescence spectroscopy. In this talk, we will discuss the dependence of electron transfer dynamics on the nature of semiconductors, molecules (anchoring group, spacer and chromospheres), and junction environments (solvent, pH).

Tim Lian received his BS degree from Xiamen University in 1985 and MS degree from the Chinese Academy of Sciences in 1988. He pursued his PhD study under the supervision of Prof. Robin Hochstrasser at the department of Chemistry, University of Pennsylvania , where he received his PhD degree in December, 1993. After two and a half years of postdoctoral training with Prof. Charles B. Harris in the University of California at Berkeley , Tim Lian joined the faculty of the chemistry department at Emory University in 1996. He was promoted to associate professor in 2002 and full professor in 2005. Tim Lian is a recipient of the NSF CAREER award and the Sloan fellowship. His research interest is focused on ultrafast dynamics of nanomaterials and interfaces.

Refreshments are available 15 minutes prior to each seminar.
Parking in Washington Ave, Church Street or Weisman garages www1.umn.edu/pts/maps/ebcolr.htm

For more information visit www.nanoigert.umn.edu 

SPONSORED BY THE NSF INTEGRATED GRADUATE EDUCATION & RESEARCH TRAINEESHIP (IGERT) PROGRAM FOR NANOPARTICLE SCIENCE & ENGINEERING AT THE UNIVERSITY OF MINNESOTA