Elastic Photomechanical Organic Single Crystals with Dual Photoswitch Units for an Extended Absorption Band
Molecular crystals that can generate mechanical motion in response to external light are promising candidates for photoactuators, which are expected to have applications in microrobotics, artificial muscles, smart switches, microfluidic systems, oscillators, etc. However, most of the molecular cryst...
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| المؤلف الرئيسي: | |
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| مؤلفون آخرون: | , , , , , , , , |
| منشور في: |
2024
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| الموضوعات: | |
| الوسوم: |
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| الملخص: | Molecular crystals that can generate mechanical motion in response to external light are promising candidates for photoactuators, which are expected to have applications in microrobotics, artificial muscles, smart switches, microfluidic systems, oscillators, etc. However, most of the molecular crystals are brittle, which leads to poor processability and easy failure during use. Furthermore, most of the crystals are actuated by UV light, which may be harmful to human health. Here, we successfully synthesized an elastically flexible crystal that can undergo Z/E isomerization to achieve backlight bending under visible light irradiation. The origin of elastic flexibility was explored by analyzing the packing structure and intermolecular interactions. The photochemical reaction routine was confirmed by analysis of single-crystal structure, <sup>1</sup>H NMR and FTIR spectra. The results presented in this work may provide a way to design flexible crystals that can be actuated by visible light and facilitate the application of photoswitch molecules. |
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