Surface oxidation of carbon dots enables highly selective and sensitive chemiluminescence detection of hydroxyl radical  

作　　者：Chan Wang Yuan Fang Dongrun Zhou Chenxi Wu Han Zhu Qijun Song 

机构地区：[1]Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China

出　　处：《Nano Research》2024年第11期9275-9283,共9页纳米研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.51973083 and 22376081).

摘　　要：The rapid quantification of hydroxyl radical (·OH) in real samples is a great challenge due to its highly reactive nature and the potential interferences from other coexisting reactive oxygen species (ROS). Herein, a chemiluminescence (CL) probe (ox-CDs) was rationally developed for the detection of ·OH through controlled oxidation treatment of original CDs (o-CDs) with H_(2)O_(2). Post-oxidation of CDs can reduce the surface defects or functional groups on the CDs, exposing reactive sites capable of effectively reacting with ·OH. The chemical energy generated from redox reaction between ·OH and the ox-CDs can be efficiently utilized to generate strong and selective CL responses to ·OH without interferences from other ROS. Thus, a highly selective and sensitive CL method with a linear range from 0.01 to 150 μM and a detection limit of 3 nM was developed, which was successfully applied for monitoring the ·OH production from cigarette and mosquito coil smoke.

关 键 词：carbon dots POST-OXIDATION chemiluminescence probe detection of·OH cigarette and mosquito coil smoke 

分 类 号：O62[理学—有机化学]