Issue 39, 2014

The key role of geminate electron–hole pair recombination in the delayed fluorescence in rhodamine 6G and ATTO-532

Abstract

In this paper we investigate the delayed fluorescence (DF) phenomena in the widely used laser dye, rhodamine 6G, and its derivative ATTO-532 as a function of excitation energy using highly sensitive time-resolved gated nanosecond spectroscopy. Excitation with UV laser radiation results in delayed emission, which arises from singlet states created from geminate pair recombination, not triplet annihilation. For the first time the origins and photo-physical properties of delayed fluorescence in these highly fluorescent molecules are elucidated.

Graphical abstract: The key role of geminate electron–hole pair recombination in the delayed fluorescence in rhodamine 6G and ATTO-532

Supplementary files

Article information

Article type
Paper
Submitted
17 Apr 2014
Accepted
19 Aug 2014
First published
20 Aug 2014

Phys. Chem. Chem. Phys., 2014,16, 21543-21549

Author version available

The key role of geminate electron–hole pair recombination in the delayed fluorescence in rhodamine 6G and ATTO-532

M. Aydemir, V. Jankus, F. B. Dias and A. Monkman, Phys. Chem. Chem. Phys., 2014, 16, 21543 DOI: 10.1039/C4CP01675K

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