TY - JOUR
T1 - Photomechanical azobenzene crystals
AU - Taniguchi, Takuya
AU - Asahi, Toru
AU - Koshima, Hideko
N1 - Funding Information:
This research was funded by the JSPS Grant-in-Aid for Scientific Research B (17H03107) and Challenging Exploratory Research (16K12918). T.T. and T.A. thank the Leading Graduate Program in Science and Engineering at Waseda University.
Funding Information:
Funding: This research was funded by the JSPS Grant-in-Aid for Scientific Research B (17H03107) and Challenging Exploratory Research (16K12918).
Publisher Copyright:
© 2019 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2019/9
Y1 - 2019/9
N2 - Photomechanically responsive materials are promising candidates for future smart actuator applications. The photo-responsive behaviors originate from the photoisomerization of photochromic molecules. A typical photochromic compound, azobenzene, has been studied extensively in the solution state and has played a crucial role in the photomechanical behaviors of materials such as polymers and gels, via chemical bridging with their matrix. In contrast to polymers and gels, the photomechanical attributes of molecular crystals have not progressed to the same degree, due to their rigidity and fragility. However, the past decade has witnessed an increasing number of reports of the photomechanical motion of molecular crystals, including azobenzene crystals. This paper reviews the current state-of-the-art of mechanically responsive azobenzene crystals, including the history, crystal design strategy, and future promising applications.
AB - Photomechanically responsive materials are promising candidates for future smart actuator applications. The photo-responsive behaviors originate from the photoisomerization of photochromic molecules. A typical photochromic compound, azobenzene, has been studied extensively in the solution state and has played a crucial role in the photomechanical behaviors of materials such as polymers and gels, via chemical bridging with their matrix. In contrast to polymers and gels, the photomechanical attributes of molecular crystals have not progressed to the same degree, due to their rigidity and fragility. However, the past decade has witnessed an increasing number of reports of the photomechanical motion of molecular crystals, including azobenzene crystals. This paper reviews the current state-of-the-art of mechanically responsive azobenzene crystals, including the history, crystal design strategy, and future promising applications.
KW - Actuation
KW - Azobenzene
KW - Molecular crystal
KW - Photomechanical motion
KW - Trans-cis photoisomerization
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U2 - 10.3390/cryst9090437
DO - 10.3390/cryst9090437
M3 - Review article
AN - SCOPUS:85073323672
SN - 2073-4352
VL - 9
JO - Crystals
JF - Crystals
IS - 9
M1 - 437
ER -