Nafion公司
量子点
电化学发光
材料科学
复合数
循环伏安法
化学工程
过氧二硫酸盐
猝灭(荧光)
过氧化氢
光化学
无机化学
荧光
电极
化学
纳米技术
电化学
复合材料
有机化学
物理化学
物理
冶金
工程类
钾
量子力学
作者
Lynn Dennany,Matthias Gerlach,Shane O'Carroll,Tia E. Keyes,Robert J. Forster,Paolo Bertoncello
摘要
Water soluble positively charged 2-(dimethylamino)ethanethiol (DAET)-protected core-shell CdSe/ZnS quantum dots (QDs) were synthesized and incorporated within negatively charged Nafion polymer films. The water soluble QDs were characterized using UV-visible and fluorescence spectroscopies. Nafion/QDs composite films were deposited on glassy carbon electrodes and characterized using cyclic voltammetry. The electrochemiluminescence (ECL) using hydrogen peroxide as co-reactant was enhanced for Nafion/QDs composite films compared to films of the bare QDs. Significantly, no ECL was observed for Nafion/QDs composite films when peroxydisulfate was used as the co-reactant, suggesting that the permselective properties of the Nafion effectively exclude the co-reactant. The ECL quenching by glutathione depends linearly on its concentration when hydrogen peroxide is used as the co-reactant, opening up the possibility to use Nafion/QDs composite films for various electroanalytical applications.
科研通智能强力驱动
Strongly Powered by AbleSci AI