Bright dual-color electrochemiluminescence of a structurally determined Pt1Ag18 nanocluster  

作　　者：Bing Yin Lirong Jiang Xiaojian Wang Ying Liu Kaiyang Kuang Mengmeng Jing Chunmin Fang Chuanjun Zhou Shuang Chen Manzhou Zhu 

机构地区：[1]Institutes of Physical Science and Information Technology and Centre for Atomic Engineering of Advanced Materials,Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education,Department of Chemistry and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials,Anhui University,Hefei,China

出　　处：《Aggregate》2024年第1期345-352,共8页聚集体（英文）

基　　金：National Natural Science Foundation of China,Grant/Award Numbers:22004001,21631001,21871001;Anhui Provincial Natural Science Foundation,Grant/Award Number:2008085QB84;the Ministry of Education,the University Synergy Innovation Program of Anhui Province,Grant/Award Number:GXXT-2020-053。

摘　　要：Metal nanoclusters possess excellent electrochemical,optical,and catalytic properties,but correlating these properties remains challenging,which is the foundation to generate electrochemiluminescence(ECL).Herein,we report for the first time that a structurally determined Pt1Ag18 nanocluster generates intense ECL and simultaneously enhances the ECL of carbon dots(CDs)via an electrocatalytic effect.Pt^(1)Ag_(18)nanocluster show aggregation-induced emission enhancement and aggregation-induced ECL enhancement under light and electrochemical stimulation,respectively.In the presence of tripropylamine(TPrA)as a coreactant,solid Pt1Ag18 shows unprecedented ECL efficiency,which is more than nine times higher than that of 1 mM Ru(bpy)32+with the same TPrA concentration.Potential-resolved ECL spectra reveal two ECL emission bands in the presence of TPrA.The ECL emission centered at 650 nm is assigned to the solid Pt_(1)Ag_(18)nanocluster,consistent with the peak wavelength in self-annihilation ECL and photoluminescence of the solid state.The ECL emission centered at 820 nm is assigned to the CDs on the glassy carbon electrode.The electrocatalytic effect of the nanoclusters enhanced the ECL of the CDs by a factor of more than 180 in comparison to that without nanoclusters.Based on the combined optical and electrochemical results,the ECL generation pathways and mechanisms of Pt1Ag18 and CDs are proposed.These findings are extremely promising for designing multifunctional nanocluster luminophores with strong emissions and developing ratiometric sensing devices.

关 键 词：AIECLE AIEE ELECTROCHEMILUMINESCENCE NANOCLUSTER PHOTOLUMINESCENCE structure 

分 类 号：O64[理学—物理化学]