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Studies of Temperature-Dependent Excimer-Monomer Conversion in Dendrimeric Antenna Supermolecules by Fluorescence Spectroscopy

Published online by Cambridge University Press:  21 March 2011

Youfu Caoa ,
Jeffrey S. Moore  and
Raoul Kopelman
Youfu Caoa
Affiliation:
Department of Chemistry, University of Michigan, Ann Arbor, MI 48109
Jeffrey S. Moore
Affiliation:
Department of Chemistry, University of Illinois, Urbana, IL 61801
Raoul Kopelman*
Affiliation:
Department of Chemistry, University of Michigan, Ann Arbor, MI 48109
*
*Correspondence Author: [email protected]
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Abstract

Phenylacetylene (PA) dendrimer labeled with perylene (See Fig 1) is discovered to exhibit temperature-dependent emission spectra in certain organic solvents over the temperature range of 20-65°C. The monomer signal is increasing rapidly when temperature increases, while the excimer signal decreases slowly. Models of excimer formation and weakly associated pairs (M+M) dissociation dynamics are included, and the equilibrium constants at different temperatures are calculated. This behavior suggests potential applications in fluorescence-based thermometry.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 651: Symposium T – Dynamics in Small Confining Systems V , 2000 , T7.27.1
Copyright
Copyright © Materials Research Society 2001

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