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Issue 12, 2019
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A chemical reaction controlled by light-activated molecular switches based on hetero-cyclopentanediyls

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Abstract

Molecular switches are molecules that can reversibly be shifted between at least two stable states with different physical and chemical properties, making them interesting for application as chemical sensors or molecular machines. We recently discovered that five-membered, cyclic biradicals based on group 15 elements are efficient and robust photochemical switches that can be activated by red light. The quantum yield of the photo-isomerization is as high as 24.6%, and the thermal equilibration of the photo-activation product proceeds rapidly at ambient temperature. The fully reversible process was studied by experimental and high-level ab initio techniques. We could further demonstrate that the biradical character could be completely turned on and off, so the system could be applied to control chemical equilibria that involve activation products of the cyclic biradicals.

Graphical abstract: A chemical reaction controlled by light-activated molecular switches based on hetero-cyclopentanediyls

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Supplementary files

Article information


Submitted
02 Nov 2018
Accepted
17 Feb 2019
First published
18 Feb 2019

This article is Open Access
All publication charges for this article have been paid for by the Royal Society of Chemistry

Chem. Sci., 2019,10, 3486-3493
Article type
Edge Article

A chemical reaction controlled by light-activated molecular switches based on hetero-cyclopentanediyls

J. Bresien, T. Kröger-Badge, S. Lochbrunner, D. Michalik, H. Müller, A. Schulz and E. Zander, Chem. Sci., 2019, 10, 3486
DOI: 10.1039/C8SC04893B

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