Issue 5, 2023

Redshifted and thermally bistable one-way quantitative hemithioindigo-derived photoswitches enabled by isomer-specific excited state intramolecular proton transfer

Abstract

We report bistable indole-containing hemithioindigos (HTIs) with one-way quantitative photoswitching properties. Supported by state-averaged CASPT2/CASSCF calculations, we propose a mechanism for the observed one-way photoswitching that involves an isomer-specific excited state intramolecular proton transfer (ESIPT). Additionally, we developed a thermally bistable oligomer-inspired bipyrrole-containing HTI, which displays large band separation and bidirectional near-quantitative photoisomerization in the near-infrared, bio-optical window.

Graphical abstract: Redshifted and thermally bistable one-way quantitative hemithioindigo-derived photoswitches enabled by isomer-specific excited state intramolecular proton transfer

Supplementary files

Article information

Article type
Communication
Submitted
15 ربيع الأول 1444
Accepted
12 جمادى الأولى 1444
First published
18 جمادى الأولى 1444

Chem. Commun., 2023,59, 563-566

Redshifted and thermally bistable one-way quantitative hemithioindigo-derived photoswitches enabled by isomer-specific excited state intramolecular proton transfer

M. Krell-Jørgensen, H. Zulfikri, M. G. Bonnevie, F. S. Bro, A. O. Dohn and L. Laraia, Chem. Commun., 2023, 59, 563 DOI: 10.1039/D2CC05548A

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