Shining New Light on the Spiropyran Photoswitch: A Photocage Decides between <i>cis</i>–<i>trans</i> or Spiro-Merocyanine Isomerization
作者:Cassandra L. Fleming、Shiming Li、Morten Grøtli、Joakim Andréasson
DOI:10.1021/jacs.8b09523
日期:2018.10.31
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
已知来自螺吡喃家族的光致变色分子在无色螺环和有色部花青形式之间经历光诱导的相互转化。在这里,我们首次展示了小的结构修饰为额外的光异构化模式开辟了道路:部花青的可逆顺反异构化。此外,光笼的引入允许在两种模式之间进行光激活切换。