高等学校化学学报2025，Vol.46Issue(8)：1-8,8.DOI:10.7503/cjcu20250100
配体工程增强金纳米团簇的聚集诱导发光
Aggregation Induced Emission Enhancement of Ligand-Engineered Au Nanoclusters
摘要
Abstract
The aggregation-induced emission(AIE)properties of gold nanoclusters(Au NCs)exhibit significant potential for applications in bioimaging,chemical sensing,and optoelectronic devices.However,developing effective design strategies to achieve strong aggregation-induced emission enhancement(AIEE)in Au NCs remains a challenge.In this paper,we report a ligand engineering approach to achieve remarkable AIE enhancement in Au8 nanoclusters.The quantum yield of aggregated Au8 NCs showed a ca.90-fold increase compared to their solution state,with corresponding emission intensity enhancement reaching ca.560-fold.Through combined optical characterization and metastable component tracking in aggregated systems,we elucidate the underlying AIEE mechanism.Both AIEE and crystallization-induced emission enhancement(CIEE)were activated through ligand engineering,which facilitated(1)shortened inter-cluster distances(from 1.31 nm to 0.72 nm)and(2)effective suppression of intermolecular rotational/vibrational relaxation.This steric-hindrance-reduction strategy establishes a new paradigm for precise modulation of photoluminescence in gold nanoclusters across both aggregated and crystal-line states.关键词
配体工程/光致发光/聚集诱导发光/原子精确/金团簇Key words
Ligand engineering/Photoluminescence/Aggregation induced emission/Atomically precise/Gold nanocluster分类
化学化工引用本文复制引用
叶伟卿,樊春海,贾思思,陈静,逯慧,陈婉京,李宁静,张瑜,王丽华,李江,诸颖,李明强..配体工程增强金纳米团簇的聚集诱导发光[J].高等学校化学学报,2025,46(8):1-8,8.基金项目
国家重点研发计划项目(批准号:2023YFC3404200)资助.Supported by the National Key Research and Development Program of China(No.2023YFC3404200). （批准号:2023YFC3404200）
