Chemistry Colloquium: Professor Samuel Thomas, Tufts University
University of Massachusetts Boston
Department of Chemistry
Controlling Polymeric Thin Films with Light
Professor Samuel W. Thomas III
Department of Chemistry, Tufts University
Wednesday, November 20, 2013 | 12:00 pm
Chemistry Conference Room (Science S01-0089)
This talk will describe several new approaches to controlling the properties of solid-state organic materials with light. We have developed conjugated polymer (CP)-based materials that show a photoluminescent response to singlet oxygen (1O2). Thin films of these polymers also respond to irradiation of microspheres with protein-bound sensitizers, a solution to the problem of protein-conjugated polymer non-specific interactions in biosensing. The talk will also summarize two approaches to controlling non-covalent interactions between polymers using light. First, photoinduced charge-shifting polymers yield photoresponsive polyelectrolyte multilayer films. Second, polythiophenes with photocleavable solubilizing side-chains undergo aggregation and resist dissolution upon irradiation with UV light.
For disability-related accommodations, including dietary accommodations, please visit www.ada.umb.edu two weeks prior to the event.