A new class of light-controlled molecular switches based on an azodicarboxamide chromophore is described by S. Amirjalayer, S. Woutersen, W. J. Buma et al. in their Communication on page 1792 ff. These switches work like the crankshaft of a bicycle and, as switching requires a very small volume, will function even in rock-solid spatial constraints. The pedalo-like switching is observed in real time by using time-resolved vibrational spectroscopy to monitor the light-induced dynamics.

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封面图片：基于偶氮羧酰胺的分子开关中的光致Pedalo型运动（Angew.Chem.Int.Ed.7 / 2018）

S.Amirjalayer，S.Woutersen，W.J.Buma等人描述了基于偶氮二甲酰胺生色团的新型光控分子开关。在第1792页及其后的通讯中。这些开关就像自行车的曲轴一样工作，并且由于开关需要很小的体积，因此即使在坚如磐石的空间限制下也能正常工作。通过使用时间分辨振动光谱法来实时观察踏板状开关，以监视光感应的动力学。