Quantum Dot Electrochemiluminescence in Aqueous Solution at Lower Potential and Its Sensing Application
| Autor: | Erbo Ying, Shaojun Dong, Xiangqin Zou, Lihua Zhang |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
chemistry.chemical_classification
Aqueous solution Chemistry Inorganic chemistry Polymer Electroluminescence Electrochemistry Combinatorial chemistry Surfaces Coatings and Films Electronic Optical and Magnetic Materials General Energy Quantum dot Anhydrous Electrochemiluminescence Physical and Theoretical Chemistry Alkyl |
| Zdroj: | The Journal of Physical Chemistry C. 112:4451-4454 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/jp7097944 |
| Popis: | The unique strategy for electrochemiluminescence (ECL) sensor based on the quantum dots (QDs) oxidation in aqueous solution to detect amines is proposed for the first time. Actually, there existed two QDs ECL peaks in anhydrous solution, one at high positive potential and another at high negative potential. However, here we introduced the QDs oxidation ECL in aqueous solution to fabricate a novel ECL sensor. Such sensor needed only lower positive potential to produce ECL, which could prevent the interferences resulted from high potential as that of QDs reduction ECL in aqueous solution. Therefore, the present work not only extended the QDs oxidation ECL application field from anhydrous to aqueous solution but also enriched the variety of ECL system in aqueous solution. Furthermore, we investigated the QDs oxidation ECL toward different kinds of amines, and found that both aliphatic alkyl and hydroxy groups could lead to the enhancement of ECL intensity. Among these amines, 2-(dibutylamino)ethanol (DBAE) i... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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