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Shining New Light on the Spiropyran Photoswitch: A Photocage Decides between cis-trans or Spiro-Merocyanine Isomerization

Journal article
Authors Cassandra L. Fleming
S. M. Li
Morten Grötli
J. Andreasson
Published in Journal of the American Chemical Society
Volume 140
Issue 43
Pages 14069-14072
ISSN 0002-7863
Publication year 2018
Published at Department of Chemistry and Molecular Biology
Pages 14069-14072
Language en
Links dx.doi.org/10.1021/jacs.8b09523
Keywords photochromic spiropyran, molecular switch, photopharmacology, water, transformations, color, Chemistry
Subject categories Chemical Sciences

Abstract

Photochromic molecules from the spiropyran family are known to undergo light-induced interconversion between the colorless spiro- and the colored merocyanine forms. Here, we show for the first time that small structural modifications open up for an additional photoisomerization mode: reversible cis-trans isomerization of the merocyanine. Moreover, the introduction of a photocage allows for light-activated switching between the two modes.

Page Manager: Webmaster|Last update: 9/11/2012
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