文献类型：期刊文献

英文题名：Reversibly modulating a conformation-adaptive fluorophore in [2]catenane

作者：Yang, Shun[1,2];Zhao, Cai-Xin[1,2];Crespi, Stefano[3];Li, Xin[4];Zhang, Qi[1,2];Zhang, Zhi-Yun[1,2];Mei, Ju[1,2];Tian, He[1,2];Qu, Da-Hui[1,2]

机构：[1]East China Univ Sci & Technol, Frontiers Sci Ctr Materiobiol & Dynam Chem, Feringa Nobel Prize Scientist Joint Res Ctr, Key Lab Adv Mat,Inst Fine Chem,Sch Chem & Mol Eng, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Frontiers Sci Ctr Materiobiol & Dynam Chem, Feringa Nobel Prize Scientist Joint Res Ctr,Inst, Joint Int Res Lab Precis Chem & Mol Engn,Sch Chem, Shanghai 200237, Peoples R China;[3]Univ Groningen, Fac Sci & Engn, Stratingh Inst Chem, Nijenborgh 4, NL-9747 AG Groningen, Netherlands;[4]KTH Royal Inst Technol, Sch Engn Sci Chem Biotechnol & Hlth, Dept Theoret Chem & Biol, SE-10691 Stockholm, Sweden

年份：2021

卷号：7

期号：6

起止页码：1544

外文期刊名：CHEM

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000660002500017)】；

基金：This work was supported by the National Natural Science Foundation of China (22025503, 21790361, 21871084, and 21672060), Shanghai Municipal Science and Technology Major Project (grant no. 2018SHZDZX03), the Fundamental Research Funds for the Central Universities, the Programme of Introducing Talents of Discipline to Universities (grant B16017), Program of Shanghai Academic/Technology Research Leader (19XD1421100), and the Shanghai Science and Technology Committee (grant 17520750100). S.C. thanks the Marie Sklodowska-Curie Action (individual fellowship no. 838280). We thank Dr. Luca Catalano and Dr. Marc Little for their help on further refinements of single crystals. We thank the Research Center of Analysis and Test of East China University of Science and Technology for help on the material characterization.

语种：英文

摘要：Tuning molecular emission by chemicalmeans has long been a fundamental topic, because the emerging methodologies and mechanisms of this topic usually bring a lot of opportunities in many multi-disciplinary applications. Here, we demonstrate the reversible switching of a conformation-adaptive fluorophore, 9,14-diphenyl-9,14-dihydrodibenzo[ a,c]phenazine (DPAC), by incorporating this fluorescent unit into a mechanically interlocked [2]catenane. Taking advantage of the mechanical bond of [2]catenane, the conformational freedom of the DPAC-macrocycle can be modulated by the co-conformational state of the [2]catenane, thus enabling the reversible switching of the fluorescent properties of DPAC. Owing to the mechanically interlocked structure, this fluorescent molecular system can be switched in a dual-mode (wavelength or intensity), visually recognizable, and highly reversible manner. This work provides a distinctmechanism of switchingmolecular emission by modulating conformation-adaptive fluorescent systems in mechanically interlocked structures.