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

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 origin...

Full description

Saved in:
Bibliographic Details
Published inChemical communications (Cambridge, England) Vol. 55; no. 1; pp. 1565 - 1568
Main Authors Zhuo, Zesheng, Jiao, Yajie, Chen, Lichan, Li, Haohong, Dai, Ming, Lin, Zhenyu, Yang, Hongbin, Fu, Fengfu, Dong, Yongqiang
Format Journal Article
LanguageEnglish
Published England Royal Society of Chemistry 12.12.2019
Subjects
Carbon
Carbon nitride
Density functional theory
Fluorescence
Mass spectra
Mathematical analysis
Nanosheets
Optical properties
Ultraviolet
Online AccessGet full text

Cover

More Information
Summary: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. Small-sized graphitic carbon nitride nanosheets (CNNs) have been prepared to exhibit an ultra-high quantum yield (80.1%) ultraviolet fluorescence, which was proved to have originated from the abundant isolated melem units on the edge of CNNs.
Bibliography:Electronic supplementary information (ESI) available: Experimental details regarding the synthesis of CNNs, DFT and TD-DFT calculations, and additional data. See DOI
10.1039/c9cc07448a
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1359-7345
1364-548X
DOI:10.1039/c9cc07448a