Conjugated materials can, in many cases, absorb visible light because of their delocalized π electron system. Such materials have been widely used as a photoactive layers in organic photovoltaic devices and as photosensitizers in dye‐sensitized solar cells. Additionally, these materials have been reported for applications in solar fuel production, working as photocatalysts for the hydrogen evolution reaction (HER). The synthesis of three flexible vinyl groups‐containing chromophores is reported. The catalytic activity towards hydrogen evolution of these chromophores has been investigated and compared to their non‐vinyl‐containing analogues. The catalytic effect was confirmed using two different approaches: electrochemical, using the chromophores to modify a working electrode, and photocatalytic, using the chromophores combined with platinum nanoparticles. A relationship between the degree of conjugation and the catalytic activity of the chromophores has been observed with the electrochemical method, while a relationship between the UV absorption in the solid state and the photocatalytic effect with platinum nanoparticles was observed.

中文翻译：

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六种有机发色团的共轭和吸收程度对向氢释放的催化活性

在许多情况下，共轭材料可以吸收可见光，因为它们的电子系统已经离域。此类材料已广泛用作有机光伏器件中的光敏层，以及用作染料敏化太阳能电池中的光敏剂。另外，已经报道了这些材料在太阳能燃料生产中的应用，用作氢析出反应（HER）的光催化剂。报道了三种含乙烯基柔性发色团的合成。已经研究了这些生色团对氢逸出的催化活性，并将其与不含乙烯基的类似物进行了比较。可以通过两种不同的方法来确认催化效果：电化学，使用生色团修饰工作电极以及光催化，结合使用发色团和铂纳米粒子。用电化学方法观察到了共轭度与生色团的催化活性之间的关系，同时观察到了固态的紫外线吸收与铂纳米颗粒的光催化作用之间的关系。