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
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DOI：
10.1021/jacs.8b09523
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发表时间：
2018-10-31
影响因子：
15
通讯作者：
Andreasson, Joakim
中科院分区：
文献类型：
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作者：
Fleming, Cassandra L.;Li, Shiming;Andreasson, Joakim
已知来自螺吡喃家族的光致变色分子在无色螺和有色汞形式之间经历光诱导的相互转化。在这里，我们首次表明，小的结构修改打开了一个额外的光异构化模式：可逆的顺反异构化的mercury。此外，光笼的引入允许两种模式之间的光激活切换。
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.