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Issue 26, 2016
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Intersystem crossing rates of single perylene molecules in ortho-dichlorobenzene

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Abstract

Triplet states can be interesting for optical switching of molecular fluorescence as well as quantum experiments relying on the manipulation of spin states. However, the ground state of molecules is usually a singlet state. It is therefore interesting to study the intersystem crossing (ISC) rates between singlet and triplet states. We have measured the autocorrelation function of the fluorescence from single perylene molecules in an ortho-dichlorobenzene host matrix at cryogenic temperatures (1.3 K). We observed two time scales in the autocorrelation function corresponding to intersystem crossing to two indistinguishable triplet states (TX and TY) and a third triplet state (TZ). By studying the power dependence of the correlation times and contrasts in the autocorrelation functions of single molecules, we determine the ISC rates of perylene for the first time.

Graphical abstract: Intersystem crossing rates of single perylene molecules in ortho-dichlorobenzene

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Supplementary files

Article information


Submitted
21 Apr 2016
Accepted
07 Jun 2016
First published
09 Jun 2016

Phys. Chem. Chem. Phys., 2016,18, 17655-17659
Article type
Paper

Intersystem crossing rates of single perylene molecules in ortho-dichlorobenzene

N. R. Verhart, P. Navarro, S. Faez and M. Orrit, Phys. Chem. Chem. Phys., 2016, 18, 17655
DOI: 10.1039/C6CP02678H

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