Antibunching in the Emission of a Single Tetrachromophoric Dendritic System
- 6 November 2002
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 124 (48), 14310-14311
- https://doi.org/10.1021/ja027343c
Abstract
The photophysics of a dendrimer containing four chromophores are investigated at the single-molecule level. First, the multichromophoric character of single dendrimers' absorption is probed by modulating the linear polarization of the excitation beam. Subsequently, using circular polarization, the same dendrimers are excited, and their fluorescence transients are recorded. Using pulsed excitation in combination with the classical Hanbury-Brown and Twiss coincidence setup the presented data demonstrate that efficient singlet−singlet annihilation ensures that always only one photon is emitted even when several excitations are generated in an individual multichromophoric molecule.This publication has 8 references indexed in Scilit:
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