Yu Qi, Aguila Briana, Gao Jia, Xu Peixin, Chen Qizhe, Yan Jie, Xing Dong, Chen Yao, Cheng Peng, Zhang Zhenjie, Ma Shengqian
College of Chemistry, Nankai University, Tianjin, 300071, P.R. China.
Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, FL, 33620, USA.
Chemistry. 2019 Apr 17;25(22):5611-5622. doi: 10.1002/chem.201805382. Epub 2019 Feb 12.
Photomechanical molecular crystals are receiving much attention due to their efficient conversion of light into mechanical work and advantages including faster response time; higher Young's modulus; and ordered structure, as measured by single-crystal X-ray diffraction. Recently, various photomechanical crystals with different motions (contraction, expansion, bending, fragmentation, hopping, curling, and twisting) are appearing at the forefront of smart materials research. The photomechanical motions of these single crystals during irradiation are triggered by solid-state photochemical reactions and accompanied by phase transformation. This Minireview summarizes recent developments in growing research into photoresponsive molecular crystals. The basic mechanisms of different kinds of photomechanical materials are described in detail; recent advances in photomechanical crystals for promising applications as smart materials are also highlighted.
光机械分子晶体因其能高效地将光转化为机械功以及具有包括更快响应时间、更高杨氏模量和通过单晶X射线衍射测量的有序结构等优点而备受关注。最近，各种具有不同运动（收缩、膨胀、弯曲、破碎、跳跃、卷曲和扭转）的光机械晶体正出现在智能材料研究的前沿。这些单晶在辐照过程中的光机械运动由固态光化学反应触发并伴随着相变。本综述总结了光响应分子晶体不断发展的研究中的最新进展。详细描述了不同种类光机械材料的基本机制；还强调了光机械晶体在作为智能材料的有前景应用方面的最新进展。
