Photomechanical Organic Crystals as Smart Materials for Advanced Applications

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 photom...

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Bibliographic Details
Published in:Chemistry : a European journal 2019-04, Vol.25 (22), p.5611-5622
Main Authors: Yu, Qi, Aguila, Briana, Gao, Jia, Xu, Peixin, Chen, Qizhe, Yan, Jie, Xing, Dong, Chen, Yao, Cheng, Peng, Zhang, Zhenjie, Ma, Shengqian
Format: Article
Language:English
Subjects:
Chemistry
Contraction
crystal engineering
Crystal structure
Crystals
Irradiation
Light effects
Mechanical properties
Modulus of elasticity
molecular machines
Organic crystals
Phase transitions
Photochemical reactions
Photochemicals
photochemistry
photochromism
Response time
Single crystals
Smart materials
Twisting
X-ray diffraction
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Summary: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. Going through the motions: Photomechanical molecular crystals receive much attention due to their efficient conversion of light into mechanical work, as well as faster response time, higher Young's modulus, and ordered structure (see figure). Recent developments in growing research into photoresponsive molecular crystals is summarized.
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.201805382