文献类型：期刊文献

英文题名：Visible-Light-Excited Room-Temperature Phosphorescence in Water by Cucurbit[8]uril-Mediated Supramolecular Assembly

作者：Wang, Jie[1,2];Huang, Zizhao[1,2];Ma, Xiang[1,2];Tian, He[1,2]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, Inst Fine Chem, Sch Chem & Mol Engn, Meilong Rd 130, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Inst Fine Chem, Sch Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr, Meilong Rd 130, Shanghai 200237, Peoples R China

年份：2020

卷号：59

期号：25

起止页码：9928

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20200408064330);WOS:【SCI-EXPANDED(收录号:WOS:000505290900001)】；

基金：We gratefully acknowledge the financial support from the National Natural Science Foundation of China (NSFC 21788102, 21722603 and 21871083), project support by the Shanghai Municipal Science and Technology Major Project (Grant No.2018SHZDZX03), "Shu Guang" project supported by Shanghai Municipal Education Commission and Shanghai Education Development Foundation (19SG26), the Innovation Program of Shanghai Municipal Education Commission (2017-01-07-00-02-E00010), and the Fundamental Research Funds for the Central Universities. The authors thank Prof. Y. Xie (East China University of Science and Technology), Mr. X. Luo (Hubei University), and Dr. Z. Yan (Rigaku Corporation) for their kind assistance in single-crystal growth and analysis. The authors also thank Dr. X. Yao, Mr. J. Tao and Dr. D. Li for helpful discussions.

语种：英文

外文关键词：host-guest systems; imaging agents; phosphorescence; self-assembly; supramolecular chemistry

摘要：Solid-state materials with efficient room-temperature phosphorescence (RTP) emissions have found widespread applications in materials science, while liquid or solution-phase pure organic RTP emission systems has been rarely reported, because of the nonradiative decay and quenchers from the liquid medium. Reported here is the first example of visible-light-excited pure organic RTP in aqueous solution by using a supramolecular host-guest assembly strategy. The unique cucurbit[8]uril-mediated quaternary stacking structure allows tunable photoluminescence and visible-light excitation, enabling the fabrication of multicolor hydrogels and cell imaging. The present assembly-induced emission approach, as a proof of concept, contributes to the construction of novel metal-free RTP systems with tunable photoluminescence in aqueous solution, providing broad opportunities for further applications in biological imaging, detection, optical sensors, and so forth.