Affiliation:
1. Green Catalysis Center and College of Chemistry Zhengzhou University No. 100 Kexue Road Zhengzhou 450001 China
2. Institute of Pediatrics Guangzhou Women and Children's Medical Center Guangzhou Medical University Guangzhou 510120 China
Abstract
AbstractLarge‐scale production of full‐color carbon dots (CDs) at room temperature under atmospheric pressure will promote their industrial application. Herein, o‐phenylenediamine is used as a single‐precursor carbon source and hydrogen peroxide as an oxidant. Kilogram‐scale CDs are obtained by stirring these reactants at room temperature in air for 30 min. After purification and acid treatment, blue‐, green‐, and red‐fluorescence CDs with photoluminescence peaks at 481, 539, and 625 nm are obtained with quantum yields of 21.76%, 27.12%, and 13.06%, respectively. Based on chemical structural characterizations, a reasonable formation mechanism is deduced, with blue, green, and red fluorescence arising from carbon nuclei stacked in conjugate planes containing fragments of quinoxaline, 2,3‐diaminophenazine (2,3‐DAPN), and protonated 2,3‐DAPN, respectively. High‐quality multi‐color and white light‐emitting diodes are successfully fabricated to demonstrate potential commercial applications in display and illumination.
Funder
National Natural Science Foundation of China
China Postdoctoral Science Foundation
Subject
Electrochemistry,Condensed Matter Physics,Biomaterials,Electronic, Optical and Magnetic Materials
Cited by
5 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献