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Energy Transfer in Organic Dendrimer Antenna Funnel and Anti-Funnel Supermolecules

Published online by Cambridge University Press:  10 February 2011

Stephen F. Swallen ,
Raoul Kopelman  and
Jeffrey S. Moore
Stephen F. Swallen
Affiliation:
Department of Chemistry, University of Michigan Ann Arbor, MI 48109–1055
Raoul Kopelman
Affiliation:
Department of Chemistry, University of Michigan Ann Arbor, MI 48109–1055
Jeffrey S. Moore
Affiliation:
Department of Chemistry, University of Illinois Urbana, IL 61801
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Abstract

The photophysics of exciton localization and energy transfer are examined in two unique classes of phenylacetylene dendrimers. One set of supermolecules is observed to efficiently and rapidly funnel absorbed radiation toward the molecular locus, while a slight change in molecular structure creates an effective “anti-funnel”, greatly reducing the efficiency of energy trapping. Lifetime-based and steady state fluorescence studies are used to determine the rates of intramolecular energy transfer and to glean information on molecular geometry and intermolecular interactions in two solvents.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 543: Symposium W – Dynamics in Small Confining Systems IV , 1998 , 311
Copyright
Copyright © Materials Research Society 1999

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