Potential-dependent chemiluminescence of luminol on the gold electrode modified with ferrocenylalkanethiol self-assembled monolayer |
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| Affiliation: | 1. Key Laboratory of Industrial Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China;2. Tianjin Key Laboratory of Industry Microbiology, College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China;3. Tianjin Key Laboratory for Modern Drug Delivery and High Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China |
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| Abstract: | Self-assembled monolayer of ferrocenylundecanethiol (FcC11SH) on gold electrode was used for the potential-dependent catalyst for chemiluminescence of luminol. Ferrocene head groups adsorbed on gold were oxidized to ferricinium cation species electrochemically and catalyzed the chemiluminescence of luminol. As the redox state of ferrocene group can be regulated by electrode potential, chemiluminescence response can also be controlled electrochemically. The presented system was adopted for detection of glucose in the presence of glucose oxidase since the light emission was detected even in the neutral and weak acid solution. |
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