Rational design of photochromic diarylbenzene with both high photoreactivity and fast thermal back reactivity
Rational design of photochromic diarylbenzene with both high photoreactivity and fast thermal back reactivity
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DOI：
10.1039/d1nj04047b
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发表时间：
2021-09-13
影响因子：
3.3
通讯作者：
Kobatake, Seiya
中科院分区：
文献类型：
--
作者：
Maegawa, Rikuto;Kitagawa, Daichi;Kobatake, Seiya
近年来，二芳基苯类化合物（DABs）作为一类新的T型光致变色分子被开发出来。在这项工作中，我们新设计和合成的DAB的创建具有高的光反应性和快速的热回反应性的分子。利用分子内的CH-N氢键和活性碳上的大体积取代基，导致光反应性的增强和热逆反应速率的加速。此外，我们证明了，即使在较低的浓度下，与先前报道的DAB相比，高的光反应性也导致更好的着色。这些结果不仅为分子设计提供了一种策略，而且对开发环境负荷较小的材料也是有用的。
Recently, diarylbenzenes (DABs) have been developed as a new family of T-type photochromic molecules. In this work, we newly designed and synthesized DABs for the creation of molecules with both high photoreactivity and fast thermal back reactivity. Utilizing the intramolecular CH-N hydrogen bonding and the bulky substituents at the reactive carbons resulted in the enhancement of photoreactivity and the acceleration of the thermal back reaction rate. Furthermore, we demonstrated that the high photoreactivity resulted in much better coloration compared with that of the previously reported DAB even at a lower concentration. These results would not only provide a strategy for molecular design but also be useful for the development of materials with less environmental load.