Quantum Dot Electrochemiluminescence in Aqueous Solution at Lower Potential and Its Sensing Application

We introduced the quantum dots oxidation ECL in aqueous solution to fabricate a novel ECL sensor

Lihua Zhang

2008

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  • Here we introduced the quantum dots 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
  • 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
  • 2-(dibutylamino)ethanol is the most effective one, and the first ECL sensing application of the quantum dots oxidation ECL toward DBAE is developed; the as-prepared ECL sensor shows wide linear range, high sensitivity, and good stability

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