Rational design multi-color-emissive chemiluminescent carbon nanodots in a single solvothermal reaction  

作　　者：Guang-Song Zheng Cheng-Long Shen Yuan Deng Kai-Kai Liu Jin-Hao Zang Lin Dong Qing Lou Chong-Xin Shan 

机构地区：[1]Henan Key Laboratory of Diamond Optoelectronic Materials and Devices,Key Laboratory of Materials Physics,Ministry of Education,and School of Physics and Microelectronics,Zhengzhou University,Zhengzhou 450052,China

出　　处：《Nano Research》2024年第6期4651-4660,共10页纳米研究（英文版）

基　　金：the National Natural Science Foundation of China(Nos.U2004168,12074348,11974317,12261141661,and 62204223);the China Postdoctoral Science Foundation(No.2022TQ0307);the Natural Science Foundation of Henan Province(Nos.212300410078 and 222102310664)。

摘　　要：Recently,the chemiluminescence(CL)induced by carbon nanodots(CDs)has intrigued researchers’extensive interests in various applications due to its special light emission principle.However,the difficulty of synthesizing chemiluminescent CDs with full-spectrum emission severely hinders the further regulation of the CL emission mechanism.Herein,the multi-color-emissive chemiluminescent CDs are rational designed and further synthesized by regulating the sp2-hybrid core and sp3-hybrid surface from the citrate-ammonia molecular in a single solvothermal reaction.More experimental characterizations and density functional theory calculations reveal that the higher temperature can promote the crosslinking polymerization/carbonization of carbon core and the higher protonation of solvent can determine the core size of final CDs,resulting in the variant CL emission from molecular-,crosslinking-and core-states.Thus,the CL emission of the CDs can be further synthesized by tuning the luminescence chromophores in the formation process via regulating the temperature and solvent,enabling the applications of the CL CDs in illumination and information encryption.This study paves a new technology to understand the luminescence of CDs and affords an industry translational potential over traditional chemiluminescent molecular.

关 键 词：carbon nanodots CHEMILUMINESCENCE REGULATION energy level alignment MECHANISM 

分 类 号：O62[理学—有机化学]