Electrochemically switchable electrochemiluminescent sensor constructed based on inorganic perovskite quantum dots synthesized with microwave irradiation

Microwave irradiation was employed to synthesize inorganic perovskite quantum dots (IPQDs) which were demonstrated to be monoclinic phase and behaved tunable photoluminescent emissions across the entire visible light spectrum. The microwave-based synthetic method was proved to be easy-operation, high-throughput and low-cost. These microwave-synthesized IPQDs exhibited electrochemically switchable electrochemiluminescence (ECL). Obvious ECL was obtained when holes were injected into the electron-injected IPQDs while almost no ECL was observed in the reverse process. ECL of IPQDs gave promise for constructing electrochemiluminescent sensors for hydrogen peroxide (H2O2) and dopamine (DA) detection. Linear relationships between ECL intensities and H2O2/DA concentrations were detected and satisfactory correlation coefficients were obtained. Our results shed the light on the ECL sensing application of the high-throughput microwave-synthesized IPQDs. (C) 2020 Elsevier B.V. All rights reserved.