光异构化
发色团
化学
异构化
聚合物
分子间力
高分子
固态
光化学
分子
有机化学
物理化学
生物化学
催化作用
作者
Linh Duy Thai,Thiago R. Guimarães,Lewis C. Chambers,Jochen Kammerer,Dmitri Golberg,Hatice Mutlu,Christopher Barner‐Kowollik
摘要
Photoisomerization of chromophores usually shows significantly less efficiency in solid polymers than in solution as strong intermolecular interactions lock their conformation. Herein, we establish the impact of macromolecular architecture on the isomerization efficiency of main-chain-incorporated chromophores (i.e., α-bisimine) in both solution and the solid state. We demonstrate that branched architectures deliver the highest isomerization efficiency for the main-chain chromophore in the solid state─remarkably as high as 70% compared to solution. The macromolecular design principles established herein for efficient solid-state photoisomerization can serve as a blueprint for enhancing the solid-state isomerization efficiency for other polymer systems, such as those based on azobenzenes.
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