Single Molecule Photobleaching Probes the Exciton Wave Function in a Multichromophoric System
Open Access
- 2 December 2004
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 93 (23), 236404
- https://doi.org/10.1103/physrevlett.93.236404
Abstract
The exciton wave function of a trichromophoric system is investigated by means of single molecule spectroscopy at room temperature. Individual trimers exhibit superradiance and loss of vibronic structure in emission spectrum, features proving exciton delocalization. We identify two distinct photodegradation pathways for single trimers upon sequential photobleaching of the chromophores. The rate of each pathway is a measure for the contribution of the separate dyes to the collective excited state of the system, in this way probing the wave function of the delocalized exciton.This publication has 22 references indexed in Scilit:
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