The cover picture shows the photoinduced conformational changes induced by continuous irradiation at specific wavelengths. Third‐order nonlinear optical properties of azobenzene‐containing isocyanurates can be modulated by irradiation at specific wavelengths. The modest influence of the photoinduced changes on their nonlinear absorption properties indicates that cis–trans photoisomerisation can be achieved by two‐photon excitation. More details can be found in the Full Paper by K. Matczyszyn et al. on page 1372 in Issue 12, 2017 (DOI: 10.1002/cplu.201700396).

中文翻译：

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封面特征：三唑苯-1,3,5-三嗪烷-2,4,6-三酮（异氰脲酸酯）衍生物的线性和三阶非线性光学性质（ChemPlusChem 12/2017）

封面图片显示了在特定波长下连续照射引起的光致构象变化。含偶氮苯的异氰脲酸酯的三阶非线性光学性质可以通过在特定波长下照射进行调节。光致变化对其非线性吸收特性的适度影响表明，可以通过双光子激发来实现顺式-反式光致异构化。可以在K. Matczyszyn等人的论文全文中找到更多详细信息。关于在第12期，2017年1372页（：10.1002 / cplu.201700396 DOI）。