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Enhanced electrochemiluminescence of CdSe quantum dots composited with graphene oxide and chitosan for sensitive
Teng Wang1, Shengyi Zhang, Changjie Mao
1Department of Chemistry, Key Laboratory of Inorganic Materials Chemistry of Anhui Province, Anhui University, Hefei 230039, China.
Abstract:
A novel strategy for the enhancement of electrochemiluminescence (ECL) was developed by combining CdSe quantum dots (QDs) with graphene oxide-chitosan (GO-CHIT). The ECL sensor fabricated with CdSe QDs/GO-CHIT composite exhibited high ECL intensity, good biocompatibility and long-term stability, and was used to detect of cytochrome C (Cyt C). The results show that the ECL sensor has high sensitivity for Cyt C with the linear range from 4.0 to 324 μM and the detection limit of 1.5 μM. Furthermore, the ECL sensor can selectively sense Cyt C from glucose and bovine serum albumin (BSA).