Self-Catalyzed Surface Reaction-Induced Fluorescence Resonance Energy Transfer on Cysteine-Stabilized MnO2 Quantum Dots for Selective Detection of Dopamine

• Published in: Analytical chemistry (Washington) Vol. 93; no. 7; pp. 3586 - 3593
• Main Authors: Ma, Zhangyan, Xu, Yifan, Li, Peipei, Cheng, Dan, Zhu, Xiaohua, Liu, Meiling, Zhang, Youyu, Liu, Yang, Yao, Shouzhuo
• Format: Journal Article
• Language: English
• Published: Washington American Chemical Society 23.02.2021
• Subjects: analytical chemistry; cancer therapy; Chemical reactions; Chemistry; Cysteine; detection limit; Dopamine; Drug delivery; drugs; Energy transfer; Fluorescence; Fluorescence resonance energy transfer; Imines; ligands; Manganese dioxide; Nanoparticles; Quantum dots; Resonance; schiff bases; Selectivity; Surface reactions; Ultrasonic methods; Ultrasonic testing; ultrasonic treatment

A simple one-step ultrasonic method was developed for the synthesis of luminescent MnO2 quantum dots (MnO2 QDs) in the presence of cysteine, in which cysteine acted as the exfoliating agent and stabilization ligand. The cysteine-stabilized MnO2 QDs (Cys-MnO2 QDs) possess a fluorescence quantum yield...