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A Deeper Look Into The Photocycloreversion of a Yellow Diarylethene Photoswitch: Why Is It So Fast?

Abstract

Along with the quantum yields of photoreactions of a photoswitch molecule, also the rates of their photoreactions are its essential parameters, because they can decide the eventual temporal resolution of the device using the switch. 1,2-bis(3,5-dimethylthiophen-2-yl)hexafluorocyclopentene (DMT) features efficient photochromic reactions of both ring-opening and closure and a markedly short time constant of the ring closure reaction. We find that the latter is due to the fact that the electronic relaxation from the S1 state of in closed-ring isomer of DMT occurs through a single dissipation channel involving a conical intersection in which the DMT molecule possesses an open-ring-like geometry.

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Article information


Submitted
05 Oct 2019
Accepted
06 Feb 2020
First published
06 Feb 2020

Phys. Chem. Chem. Phys., 2020, Accepted Manuscript
Article type
Communication

A Deeper Look Into The Photocycloreversion of a Yellow Diarylethene Photoswitch: Why Is It So Fast?

A. Jarota, E. Pastorczak and H. Abramczyk, Phys. Chem. Chem. Phys., 2020, Accepted Manuscript , DOI: 10.1039/C9CP05452A

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