高等学校化学学报2026，Vol.47Issue(4)：133-140,8.DOI:10.7503/cjcu20250395
掺杂诱导的氢键网络介观组装及其磷光寿命调控
Doping-induced Mesoscopic Assembly in Hydrogen-bonded Networks for Phosphorescence Lifetime Modulation
摘要
Abstract
Room-temperature phosphorescence(RTP)has been attracting more attention in recent years due to its long light-emitting lifetime,large Stokes shift,and sensitivity to the environment,which have important application prospects in the fields of bio-imaging,illumination display,and anti-counterfeiting.Hydrogen-bonded networks are widely employed in the design of solid-state RTP materials owing to their ability to suppress nonradiative transitions and stabilize triplet excited states;however,effective regulations of phosphorescence lifetime in such systems remain challenging.In this work,a hydrogen-bonded assembly based on melamine and isophthalic acid(MA-IPA)was constructed through carboxylic acid-amine hydrogen-bond interactions,and the assembly process was modulated by introducing benzene derivatives bearing different numbers of carboxyl substituents as molecular dopants.The results show that the introduction of dopant molecules does not alter the fundamental building units of the hydrogen-bonded network of MA-IPA but significantly affects the ordered packing mode and mesoscopic structural features.As a consequence,the particle size and specific surface area of the assemblies are effectively regulated,leading to different degrees of oxygen quenching of triplet excitons under ambient conditions.The resulting materials exhibit stable RTP,with phosphorescence lifetime up to 1.7 s.This study provides a viable strategy for the structural regula-tion of long-lived RTP materials based on hydrogen-bonded networks.关键词
室温磷光/氢键网络/磷光寿命/分子掺杂Key words
Room-temperature phosphorescence/Hydrogen-bonded network/Phosphorescence lifetime/Molecular doping分类
化学化工引用本文复制引用
徐成硕,武桐玥,管伟江,吕超..掺杂诱导的氢键网络介观组装及其磷光寿命调控[J].高等学校化学学报,2026,47(4):133-140,8.基金项目
国家自然科学基金(批准号:22534007,22422401,22374007,U22A20397,22402006)资助. Supported by the National Natural Science Foundation of China(Nos.22534007,22422401,22374007,U22A20397,22402006). （批准号:22534007,22422401,22374007,U22A20397,22402006）
