A series of negative T-type nitrile-rich photochromes containing a hydroxytricyanopyrrole acceptor was synthesized. It was shown that thermal stability of the photoinduced form could be tuned by the replacement of a substituent in para-position to OH-group as well as by the change of a solvent. Ethanol solutions of the synthesized compounds showed significantly shorter half-lives of the reverse dark (thermal) reaction in comparison with solutions in acetonitrile.
合成了一系列负型T型富含腈的光变色材料,这些材料包含有羟基三
氰基
吡咯受体。研究表明,通过更换邻羟基(OH组)位置的取代基以及更改溶剂,可以调节光诱导形式的热稳定性。与
乙腈溶液相比,合成化合物在
乙醇溶液中的逆暗反应(热反应)半衰期显著较短。