文献类型：期刊文献

英文题名：Aqueous Solution Enhanced Room Temperature Phosphorescence through Coordination-Induced Structural Rigidity

作者：Liang, Li Ya[1];Chen, Bin Bin[1,2];Gao, Ya Ting[1];Lv, Jian[1];Liu, Meng Li[2,3];Li, Da Wei[1]

机构：[1]East China Univ Sci & Technol, Frontiers Sci Ctr Materiobiol & Dynam Chem, Shanghai Key Lab Funct Mat Chem, Sch Chem & Mol Engn,Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]Chinese Univ Hong Kong, Shenzhen Inst Aggregate Sci & Technol, Sch Sci & Engn, Shenzhen CUHK Shenzhen, 2001 Longxiang Blvd, ShenzhenCity 518172, Guangdong, Peoples R China;[3]Chinese Univ Hong Kong, Dept Affiliated Hosp 2, Sch Med, Shenzhen CUHK Shenzhen, Shenzhen 518172, Guangdong, Peoples R China

年份：2024

卷号：36

期号：4

外文期刊名：ADVANCED MATERIALS

收录：;EI(收录号：20234915151697);WOS:【SCI-EXPANDED(收录号:WOS:001112102000001)】；

基金：L.Y.L. and B.B.C. contributed equally to this work. The authors appreciated the financial support from the National Natural Science Foundation of China (Nos. 21974046, 22176058, and 21977031), Science and Technology Commission of Shanghai Municipality (Nos. 2018SHZDZX03, 22ZR1416800, and 23ZR1416100), the Program of Introducing Talents of Discipline to Universities (No. B16017), and the Fundamental Research Funds for the Central Universities (No. 222201717003). The authors also thanked Research Center of Analysis and Test of East China University of Science and Technology for the help on the characterization.

语种：英文

外文关键词：aqueous solution enhanced phosphorescence; coordination-induced structural rigidity; ion sensing; metal-based microcubes; room-temperature phosphorescence

摘要：Achieving aqueous solution enhanced room temperature phosphorescence (RTP) is critical for the applications of RTP materials in solution phase, but which faces a great challenge. Herein, for the first time, a strategy of coordination-induced structural rigidity is proposed to achieve enhanced quantum efficiency of aluminum/scandium-doped phosphorescent microcubes (Al/Sc-PMCs) in aqueous solution. The Al/Sc-PMCs in a dry state exhibit a nearly invisible blue RTP. However, they emit a strong RTP emission in aqueous solution with a RTP intensity increase of up to 22.16-times, which is opposite to common solution-quenched RTP. The RTP enhancement mechanism is attributed to the abundant metal sites (Al3+ and Sc3+ ions) on the Al/Sc-PMCs surface that can tightly combine with water molecules through the strong coordination. Subsequently, these coordinated water molecules as the bridging agent can bind with surface groups by hydrogen bonding interaction, thereby rigidifying chemical groups and inhibiting their motions, resulting in the transition from the nonradiative decay to the radiative decay, which greatly enhances the RTP efficiency of the Al/Sc-PMCs. This work not only develops a coordination rigidity strategy to enhance RTP intensity in aqueous solution, but also constructs a phosphorescent probe to achieve reliable and accurate determination of analyte in complex biological matrices. Aluminum/scandium-doped phosphorescent microcubes (Al/Sc-PMCs) can be synthesized by hydrothermal polymerization of Al3+ ions, Sc3+ ions, and leucine ligands. Because of abundant metal sites and hydrophilic groups on the Al/Sc-PMCs surface, a coordination-induced structural rigidity strategy is developed for achieving aqueous solution enhanced room temperature phosphorescence (RTP) of the Al/Sc-PMCs, with a RTP intensity increase of up to 22.16-times.image