Energy-Level-Related Response of Cathodic Electrogenerated-Chemiluminescence of Self-Assembled CdSe/ZnS Quantum Dot Films
Source abstract
Abstract
A strategy for construction of a solid-state electrogenerated chemiluminescence (ECL) sensor based on a self-assembled film of core/shell structural CdSe/ZnS quantum dots (QDs) is presented in this work for the first time. The surface coverage of CdSe/ZnS QDs is about 2.2 × 10 12 NPs/cm 2, which is on the level of a submonolayer. This self-assembled CdSe/ZnS QD film has shown a strong and efficient cathodic ECL with peroxydisulfate and hydroperoxide as coreactants in aqueous solution. The quenching effect with hydroperoxide as the coreactant reveals an energy-level-related mechanism for the QD ECL processes. The energy levels of QDs and coreactants determine ECL responses. This insight provides a universal guide to select proper coreactants for the QD ECL sensors. In addition, the self-assembled CdSe/ZnS QD ECL sensor has the potential to detect energy-level-related analytes, such as dopamine.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Quantum Dots Synthesis And Properties · Advanced biosensing and bioanalysis techniques · Carbon and Quantum Dots Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Research Center for Nanobiology and Nanomedicine (MOE 985 Innovative Platform), State Key Laboratory of Virology, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan, 430072, P. R. China.
Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
Center for Nanoscale Systems, School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, United States
Department of Physics and Astronomy, Bowling Green State University, Bowling Green, OH 43403, United States
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