文献类型：期刊文献

中文题名：Photoinduced Bending and Curling Motions in Molecular Microcrystals of Naphthyl Meldrum’s Acid Derivative Based on E-to-Z Photoisomerization

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

作者：Zhang, Xiaowen[1];Xu, Tianyi[1];Zhang, Chenchen[1];Tong, Fei[1]

机构：[1]East China Univ Sci & Technol, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Chem & Mol Engn, Key Lab Adv Mat,Feringa Nobel Prize Scientist Join, Shanghai 200237, Peoples R China; East China Univ Sci & Technol, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Chem & Mol Engn, Joint Int Res Lab Precis Chem & Mol Engn,Feringa N, Shanghai 200237, Peoples R China

年份：2024

卷号：40

期号：5

起止页码：907

中文期刊名：Chemical Research in Chinese Universities

外文期刊名：CHEMICAL RESEARCH IN CHINESE UNIVERSITIES

收录：CSTPCD;;Scopus;WOS:【SCI-EXPANDED(收录号:WOS:001306285600001)】；CSCD:【CSCD2023_2024】；PubMed;

基金：This work was supported by the National Natural Science Foundation of China (Nos. 22105071, 22375063), the Project of the Science and Technology Commission of Shanghai Municipality, China (Nos. 22ZR1417100, 23JC1401700), and the Fundamental Research Funds for the Central Universities, China (No. B16017).

语种：英文

中文关键词：Photochemistry;Molecular crystal;E-to-Z photoisomerization;Photoinduced motion

外文关键词：Photochemistry; Molecular crystal; E-to-Z photoisomerization; Photoinduced motion

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.
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.