A highly selective photoelectrochemical sensor based on click chemistry for copper (II) determination
作者： De-Man Han , Lu-Yi Jiang , Wen-Yuan Tang , Wen-Ping Jia , Qi-Zhong Zhou
DOI: 10.1016/J.JELECHEM.2015.10.034
关键词:
摘要: Abstract A highly selective photoelectrochemical sensor was fabricated for the detection of Cu 2 + ions based on + catalyzed click reaction. Firstly, 11-Azido-3,6,9-trioxaundecan-1-amine immobilized CdS modified ITO electrode by classic 1-Ethyl-3-[3-dimethylaminopropyl]carbodiimide reaction, then propargyl-functionalized Au NPs were binding to through cycloaddition reaction between azides and alkynes, which (acquired from reduction ascorbic acid), making close QDs. Upon light irradiation, energy transfer QDs would lead decrease photocurrent. Under optimized condition, percentage photocurrent decrement linearly proportional concentration ions, ranging 1.0 × 10 − 9 − 6 M, with a limit 2.0 × 10 − 10 novel strategy could provide sensitive platform detection.
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