An Elastic Organic Crystal Enables Macroscopic Photoinduced Crystal Elongation

Among the various types of photomechanical deformations of organic crystals, photoinduced elongation of millimeter-scale crystals has yet to be demonstrated. Here we report that the millimeter-sized crystalline rods of an anthracene–pentiptycene hybrid organic π-system (1) are highly elastic and abl...

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Published inJournal of the American Chemical Society Vol. 145; no. 11; pp. 6024 - 6028
Main Authors Chen, Yu-Shan, Wang, Chih-Hsuan, Hu, Yu-Hsuan, Lu, Chun-Yi David, Yang, Jye-Shane
Format Journal Article
LanguageEnglish
Published WASHINGTON American Chemical Society 22.03.2023
Amer Chemical Soc
Subjects
Americans
Chemistry
Chemistry, Multidisciplinary
cohesion
crystals
deformation
Physical Sciences
Science & Technology
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Summary:Among the various types of photomechanical deformations of organic crystals, photoinduced elongation of millimeter-scale crystals has yet to be demonstrated. Here we report that the millimeter-sized crystalline rods of an anthracene–pentiptycene hybrid organic π-system (1) are highly elastic and able to elongate up to 21.6% or 0.40 mm without fragmentation upon undergoing [4 + 4] photodimerization reactions. Both the mechanical and photomechanical effects reveal a strong cohesion of the system, even at the interface of 1 and its photodimer 2 and under the conditions of randomized molecular packing, representing a new class of mechanically adaptive organic crystals.
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ISSN:0002-7863
1520-5126
1520-5126
DOI:10.1021/jacs.2c13210