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Published on: June 25, 2020
Ultra-high quantum yield ultraviolet fluorescence of graphitic carbon nitride nanosheets
Zesheng Zhuo1, Yajie Jiao, Lichan Chen
1MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, China. dongyq@fzu.edu.cn fengfu@fzu.edu.cn.
Abstract:
Graphitic carbon nitride (g-CN) nanosheets (CNNs) with an ultra-high quantum yield (80.1%) ultraviolet fluorescence (FL) were prepared. The effects of the lateral size and the polymerization temperature on the optical properties of CNNs have been studied. The ultraviolet FL was proved to have originated from the isolated melem units according to the density functional theory calculation and mass spectra. The obtained CNNs are further used as a pH probe due to the dependence of the FL signal on the pH of the solution.
