Ultra-high quantum yield ultraviolet fluorescence of graphitic carbon nitride nanosheets

Zesheng Zhuo; Yajie Jiao; Lichan Chen; Haohong Li; Ming Dai; Zhenyu Lin; Hongbin Yang; Fengfu Fu; Yongqiang Dong

doi:10.1039/c9cc07448a

Ultra-high quantum yield ultraviolet fluorescence of graphitic carbon nitride nanosheets

Chem Commun (Camb). 2019 Dec 12;55(100):15065-15068. doi: 10.1039/c9cc07448a.

Authors

Zesheng Zhuo¹, Yajie Jiao, Lichan Chen, Haohong Li, Ming Dai, Zhenyu Lin, Hongbin Yang, Fengfu Fu, Yongqiang Dong

Affiliation

¹ MOE 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.

PMID: 31777871
DOI: 10.1039/c9cc07448a

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.