Photoinduced Bending and Curling Motions in Molecular Microcrystals of Naphthyl Meldrum's Acid Derivative Based on E-to-Z Photoisomerization

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外文摘要：Dynamic photoresponsive molecular crystals are promising candidates for making intelligent devices and materials in the future.Here,we synthesized a new photoactive molecule(E)-2,2-dimethyl-5-[3-(naphthalen-1-yl)allylide]-1,3-dioxane-4,6-dione[(E)-DNADD]that undergoes an E-to-Z photoisomerization in both liquid solution and solids when exposed to visible light(405 nm).Compared to the bulk crystals,the photoresponsive behavior in microcrystals was profoundly improved.Highly crystalline(E)-DNADD microplate crystals exhibit robust motions,including bending,curling,and coiling under light irradiation.The photoproduct conversion of the photochemical reaction in the microplate is no more than 20％,while the large bending curvature of the coiled illuminated samples was estimated at approximately 150-300 mm-1,comparable to some photoactive nanowires.Our results indicate that shrinking crystal dimensions can boost the photoresponses in molecular crystals and provide a facile strategy for developing dynamic molecular crystals at the microscopic scale.

外文关键词：

PhotochemistryMolecular crystalE-to-Z photoisomerizationPhotoinduced motion

作者：

ZHANG Xiaowen、XU Tianyi、ZHANG Chenchen、TONG Fei

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作者单位：

Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering,Feringa Nobel Prize Scientist Joint Research Center,Frontiers Science Center for Materiobiology and Dynamic Chemistry,School of Chemistry and Molecular Engineering,East China University of Science and Technology,Shanghai 200237,P.R.China

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaProject of the Science and Technology Commission of Shanghai Municipality,ChinaProject of the Science and Technology Commission of Shanghai Municipality,ChinaFundamental Research Funds for the Central Universities,China

项目编号：

221050712237506322ZR141710023JC1401700B16017

出版年：

2024

DOI：

10.1007/s40242-024-4153-y

高等学校化学研究(英文版)

吉林大学

高等学校化学研究(英文版)

CSTPCD

影响因子：0.871

ISSN：1005-9040

年,卷(期)：2024.40(5)