文献类型：期刊文献

英文题名：Coordination Rigidity Lock: An Effective Strategy for Ultralong-Lived Aqueous Room-Temperature Phosphorescence

作者：Wu, Da Jun[1];Shi, Yichen[2];Liang, Li Ya[1];Gao, Ya Ting[1];Li, Da Wei[1,3];Chen, Bin Bin[1,3]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]Shanghai World Foreign Language Acad, Shanghai 200233, Peoples R China;[3]East China Univ Sci & Technol, Frontiers Sci Ctr Materiobiol & Dynam Chem, Feringa Nobel Prize Scientist Joint Res Ctr, Key Lab Adv Mat,Shanghai Key Lab Funct Mat Chem, Shanghai 200237, Peoples R China

年份：2025

卷号：3

期号：8

起止页码：1828

外文期刊名：ACS APPLIED OPTICAL MATERIALS

收录：WOS:【ESCI(收录号:WOS:001541310200001)】；

基金：The authors appreciate the financial support from the National Natural Science Foundation of China (22176058), the Science and Technology Commission of Shanghai Municipality (24DX1400200, 23ZR1416100, 25ZR1401082), the Program of Introducing Talents of Discipline to Universities (B16017), and the Fundamental Research Funds for the Central Universities (222201717003). We thank the Research Center of Analysis and Test of East China University of Science and Technology for the help with the characterization.

语种：英文

外文关键词：room-temperature phosphorescence; water-enhanced phosphorescence; coordination rigidity; metal-organic coordination; anticounterfeiting

摘要：The design of ultralong-lived aqueous room-temperature phosphorescence (RTP) materials has emerged as a rapidly advancing yet challenging research field. In this work, we introduce a coordination rigidity locking strategy to achieve an ultralong aqueous RTP lifetime in lanthanum- and poly(pyromeric acid)-based phosphorescent materials (La/PMA-PMs). Compared to their dry state (212 ms), the La/PMA-PMs display a significantly increased lifetime of 974 ms upon the addition of a small amount of water (50 wt %). Notably, even in a fully nondeoxygenated aqueous environment (>= 300 wt % water), La/PMA-PMs retain an ultralong aqueous RTP lifetime of approximately 800 ms. The water-enhanced RTP can be ascribed to the abundant La3+ sites and hydrophilic groups on the La/PMA-PMs surface. Specifically, water molecules coordinate with La3+ ions while also serving as bridging agents that bind to hydrophilic groups via hydrogen bonding. This interaction rigidifies the functional groups and restricts their molecular motions, thereby minimizing nonradiative decay. This work not only presents a robust coordination rigidity strategy for designing high-performance aqueous RTP materials but also highlights their potential as optical platforms for advanced anticounterfeiting applications.