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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：化学学院副院长
其他任职：辽宁省教学名师，宝钢优秀教师特等奖提名奖，中国分析测试学会青年学术委员会委员
性别：女
毕业院校：南京大学
学位：博士
所在单位：化学学院
学科：分析化学. 生物化学与分子生物学
办公地点：化工综合楼C305
电子邮箱：wushuo@dlut.edu.cn
Promising Mercaptobenzoic Acid-Bridged Charge Transfer for Electrochemiluminescence from CuInS2@ZnS Nanocrystals via Internal Cu+/Cu2+ Couple Cycling
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论文类型：期刊论文
发表时间：2019-09-19
发表刊物：JOURNAL OF PHYSICAL CHEMISTRY LETTERS
收录刊物：SCIE
卷号：10
期号：18
页面范围：5408-5413
ISSN号：1948-7185
摘要：Screening novel electrochemiluminescence (ECL) systems with less inherent interference is strongly anticipated for ECL evolution. Herein, near-infrared ECL (similar to 730 nm) with an ultralow triggering potential of 0.45 V (vs Ag/AgCl) is achieved under physiological conditions with 4-mercaptobenzoic acid (MBA) and citrate capped CuInS2@ZnS (CIS@ZnS) nanocrystals (NCs), which is promising for less autofluorescence and electrochemical interference. Cu+ species within the CIS@ZnS NCs can be electrochemically oxidized at 0.45 V to form internal Cu2+ defects, while the capping agent MBA can bridge a direct charge transfer between the oxidized NCs and the traditional coreactant tripropylamine (TPrA) for weak ECL at 0.45 V. When hydrazine hydrate is adopted as coreactant, CIS@ZnS NCs/hydrazine hydrate exhibits 8k-fold enhanced oxidative-reduction ECL via the internal Cu+/Cu2+ couple cycling at 0.45 V in comparison to CIS@ZnS NCs/TPrA. This work opens a way to enhance the radiative charge transfer of NCs.