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Issue 10, 2020
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A deeper look into the photocycloreversion of a yellow diarylethene photoswitch: why is it so fast?

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Abstract

Although photoreaction quantum yields of photoswitches determine their switching efficiency, the rates of those reactions are essential parameters because they can establish 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-opening reaction. We have found that the latter is due to the fact that the electronic relaxation from the S1 state of the closed-ring isomer of DMT occurs through a single dissipation channel, leading to a conical intersection in which the DMT molecule possesses open-ring-like geometry.

Graphical abstract: A deeper look into the photocycloreversion of a yellow diarylethene photoswitch: why is it so fast?

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Article information


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

Phys. Chem. Chem. Phys., 2020,22, 5408-5412
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, 22, 5408
DOI: 10.1039/C9CP05452A

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