Fluorescence lifetimes and emission patterns probe the 3D orientation of the emitting chromophore in a multichromophoric system

Wouter Schroeyers; Renaud Vallée; Digambara Patra; Johan Hofkens; Satoshi Habuchi; Tom Vosch; Mircea Cotlet; Klaus Müllen; Jörg Enderlein; Frans C De Schryver

doi:10.1021/ja0474603

Fluorescence lifetimes and emission patterns probe the 3D orientation of the emitting chromophore in a multichromophoric system

J Am Chem Soc. 2004 Nov 10;126(44):14310-1. doi: 10.1021/ja0474603.

Authors

Wouter Schroeyers¹, Renaud Vallée, Digambara Patra, Johan Hofkens, Satoshi Habuchi, Tom Vosch, Mircea Cotlet, Klaus Müllen, Jörg Enderlein, Frans C De Schryver

Affiliation

¹ Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium.

PMID: 15521723
DOI: 10.1021/ja0474603

Abstract

In this Communication, we report on the fluorescence behavior of an individual first generation multichromophoric dendrimer. The fact that each of the chromophores in time acts as a fluorescent trap is demonstrated by directly probing the dipole orientation of the emitting chromophore by means of defocused wide-field imaging and comparing experimental and calculated emission patterns. It is shown that in such cases the electromagnetic boundary condition effect results in discrete changes in the fluorescence lifetime as a function of time for individual dendrimers.