Department of Materials Chemistry, Faculty of Science and Technology, Ryukoku University, Seta, Otsu, Shiga, 520-2194, Japan.
Department of Chemistry and Research Center for Smart Molecules, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo, 171-8501, Japan.
Angew Chem Int Ed Engl. 2017 Oct 2;56(41):12576-12580. doi: 10.1002/anie.201706684. Epub 2017 Aug 31.
A diarylethene with a perfluorocyclohexene ring formed hollow crystals by sublimation under normal pressure. Upon UV irradiation of the crystals, they showed remarkable photosalient phenomena and scattered into small pieces. The speed of the flying debris released from the crystal by UV irradiation exceeded several meters per second. To clearly show a photosalient effect resembling the scattering behavior of Impatiens on a smaller scale, small fluorescent beads (1-μm diameter) were inserted into the hollow crystal. Consequently, scattering of the beads was observed as UV irradiation caused deformation and bursting of the hollow structure. This phenomenon is unique to hollow crystals, and the ability to effectively induce remarkable photosalient phenomena is similar to the behavior of hollow-structured Impatiens in nature.
一种带有全氟环已烯环的二噻烯通过常压升华形成空心晶体。当晶体受到紫外线照射时，它们表现出显著的光致伸缩现象，并散成小块。从晶体中释放的碎片的飞行速度超过每秒数米。为了更清楚地显示类似于凤仙花在较小尺度上的散射行为的光致伸缩效应，将小荧光珠（直径 1μm）插入空心晶体中。因此，当紫外线照射导致空心结构变形和破裂时，观察到珠子的散射。这种现象是空心晶体所特有的，并且能够有效诱导显著的光致伸缩现象的能力类似于自然界中空结构凤仙花的行为。
