量子电子学报2025，Vol.42Issue(3)：295-303,9.DOI:10.3969/j.issn.1007-5461.2025.03.001
基于时间分辨光波谱技术的维生素C与9,10-蒽醌光诱导反应机制研究
Mechanism of vitamin C and 9,10-anthraquinone photoinduced reaction based on time-resolved photoluminescence spectroscopy technology
摘要
Abstract
The photoinduced reactions between antioxidant vitamin C(VC)and 9,10-anthraquinone(AQ)in excited triplet state were studied using time-resolved electron paramagnetic resonance spectroscopy and transient absorption spectroscopy techniques in different ethylene glycol-water micelle solutions prepared with different kinds of surfactants,such as nonylphenol polyoxyethylene ether,sodium di(-2-ethylhexyl)succinate sulfonate,sodium dodecyl sulfate(SDS),and cetyltrimethylammonium bromide(CTAB).The results indicate that the reaction mechanism between VC and AQ in homogeneous and micelle solutions is essentially hydrogen atom transfer.By comparing the bimolecular reaction rates between AQ and VC in different micelle solutions,it is found that the charge type of the surface charge layer of the micelles has a decisive impact on the reaction rate.Specifically,the anionic shell of SDS micelles will reduce the reaction rate by electrostatic repulsion of VC anions,while the cationic shell of CTAB micelles will greatly accelerate the reaction rate by electrostatic attraction of VC anions.关键词
光谱学/光诱导氢原子转移/时间分辨电子顺磁共振/胶束效应/维生素C/蒽醌Key words
spectroscopy/photoinduced hydrogen atom transfer/time-resolved electron paramagnetic resonance/micelle effect/vitamin C/anthraquinone分类
物理学引用本文复制引用
魏亚雄,扶婷婷,刘毅,许新胜..基于时间分辨光波谱技术的维生素C与9,10-蒽醌光诱导反应机制研究[J].量子电子学报,2025,42(3):295-303,9.基金项目
国家自然科学基金项目(22203004,21927814),芜湖市应用基础研究项目(2022jc13) （22203004,21927814）
