Society for Analytical Chemists of Pittsburgh
WHEN: Monday, September 12, 2016
WHERE: Duquesne University
RSVP BY: Tuesday, September 6, 2016
Dinner reservations are no longer being accepted.
5:30 PM Social Hour: Student Union – City View Café (6th Floor)
6:30 PM Dinner: Student Union – City View Café (6th Floor)
7:30 PM Student Affiliate Meeting: Student Union – Room 609
7:40 PM Business Meeting: Mellon Hall of Science – Maurice Lecture Hall
8:00 PM Technical Meeting: Mellon Hall of Science – Maurice Lecture Hall
TECHNICAL PROGRAM – 8:00 PM
David H. Waldeck, Ph.D., University of Pittsburgh, Professor of Chemistry, Director of the Petersen Institute of NanoScience and Engineering
“Directing Charge Transfer in Nanoparticle Assemblies”
We are exploring nanoparticle-based materials for solar to electrical energy transduction. Nanoparticle devices promise to provide a systematic and modular approach to creating supramolecular assemblies of linked nanoparticles that function as charge transfer elements. Our goal is to identify properties of the charge transfer elements and their assemblies that will allow such a device to capture the entire available range of solar irradiance and to efficiently transduce the absorbed energy to separated charges. I will report on recent work in which we explore how to engineer nanoparticle/nanoparticle interfaces and nanoparticle/conjugated polymer interfaces to enhance charge separation and inhibit charge recombination. Particular foci of our effort are aimed at understanding the importance of energy-level gradients, built-in electrostatic potentials, and symmetry/chirality properties to improve the charge-separation efficiency in inorganic-organic hybrid structures.