Highly efficient solid-state luminescence of carbonized polymer dots without matrix  

作　　者：Rui Li Junjun Liu Chunlei Xia Tanglue Feng Zhicheng Zhu Bai Yang 

机构地区：[1]State Key Laboratory of Supramolecular Structure and Materials,College of Chemistry,Jilin University,Changchun 130012,China

出　　处：《Chinese Chemical Letters》2023年第6期412-416,共5页中国化学快报（英文版）

基　　金：supported financially by the National Science Foundation of China(Nos.22035001,21774041);Jilin University Science and Technology Innovative Research Team(No.2017TD-06)。

摘　　要：Development of high-performance solid state luminescent carbon-based nanomaterials remains challenging.Here,strong blue-green fluorescent carbonized polymer dots(CPDs)from o-aminobenzenethiol and thiosalicylic acid(o ABT-TSA-CPDs)with an absolute photoluminescence quantum yield(PLQY)of 76%in solid state without matrix were synthesized.Through adjusting the reaction temperature and time,the PL centers were proved to be carbon core state and surface state associated to carbonyl group which was the source of strong fluorescence emission in solid state.The mechanism of the unique phenomenon of enhanced emission from ethanol solution(PLQY=7%)to powder(PLQY=76%)was investigated by analyzing the chemical properties and structures of o ABT-TSA-CPDs at different temperatures and o ABT-TSACPDs/PVC composites,and was confirmed as fixation of PL centers.

关 键 词：Carbonized polymer dots Solid-state fluorescence MATRIX-FREE High performance Enhanced photoluminescence quantum yield 

分 类 号：TB332[一般工业技术—材料科学与工程]