Photosalient Effect of Diarylethene Crystals of Thiazoyl and Thienyl Derivatives
Photosalient Effect of Diarylethene Crystals of Thiazoyl and Thienyl Derivatives
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DOI：
10.1002/chem.201900811
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发表时间：
2019-06-12
影响因子：
4.3
通讯作者：
Uchida, Kingo
中科院分区：
文献类型：
--
作者：
Nakagawa, Yuma;Morimoto, Masakazu;Uchida, Kingo
发现二芳基乙烯晶体的光响应依赖于紫外光的强度，即通过增加光强度，光致弯曲转变为光凸现象。在紫外光照射下的晶体晶胞的大小的变化是较大的不对称的二芳基乙烯与噻唑和噻吩环比相应的对称的二芳基乙烯。其结果是，一个不对称的二芳基乙烯的晶体显示出更激烈的光显效应比那些相应的对称二芳基乙烯晶体在紫外线照射。还发现，二芳基乙烯的晶体，这是以前没有报道表现出的光显效应，显示出光显现象时，用强紫外光照射。此外，光显现象的晶体的大小和形状的依赖关系的报告。
The photoresponse of diarylethene crystals is found to depend on the intensity of UV light, that is, photoinduced bending is switched to photosalient phenomena by increasing the light intensity. The change in the size of the crystal unit cell upon UV irradiation is larger for asymmetric diarylethenes with thiazole and thiophene rings than that for the corresponding symmetric diarylethenes. As a result, the crystals of an asymmetric diarylethene show much more drastic photosalient effects than those of the corresponding symmetric diarylethene crystals upon UV irradiation. It is also found that the crystals of diarylethene, which have not previously been reported to exhibit a photosalient effect, show photosalient phenomena upon irradiation with strong UV light. Furthermore, the dependence of photosalient phenomena on the size and shape of the crystals is reported.