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

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

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–...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2018-10, Vol.140 (43), p.14069-14072
Main Authors: Fleming, Cassandra L, Li, Shiming, Grøtli, Morten, Andréasson, Joakim
Format: Article
Language:eng
Subjects:
Chemical Sciences
Chemistry
color
Fluorescence
Kemi
Merocyanine MC
molecular switch
photochromic spiropyran
Photocromism
photopharmacology
transformations
water
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Summary: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.
ISSN:0002-7863
1520-5126
1520-5126