ChBE Seminar Series: Paul H. Maupin
Tuesday, November 11, 2008
11:00 a.m.-12:15 a.m.
Room 2110, Chemical and Nuclear Engineering Bldg.
Professor Chunsheng Wang
The Four Regimes of Fluorescence Behavior in Nile Blue A Modified Layered Silicate Polymer Nanocomposites
Presented by Dr. Paul H. Maupin
Program Manager, Catalysis Program
Chemical Transformations Team
Division of Chemical Sciences, Geosciences, and Biosciences
Office of Basic Energy Sciences
Office of Science
U.S. Department of Energy
Characterization of structural evolution in polymer nanocomposites is a fundamental challenge that is complicated by multiple length scales. Here we report the identification of four separate and distinguishable regimes of fluorescence that correspond to structural transitions in layered silicate polymer nanocomposites containing the cationic fluorescence probe Nile Blue A.