Journal
ACS APPLIED NANO MATERIALS
Volume 3, Issue 7, Pages 6798-6805Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.0c01197
Keywords
graphitic carbon nitride nanomaterials; copolymerization; tunable fluorescence; light-emitting diodes; bioimaging
Funding
- NSFC [21874023]
- Program for Changjiang Scholars and Innovative Research Team in University of Ministry of Education of China [IRT15R11]
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The application of fluorescent graphitic carbon nitride (g-C3N4) nanomaterials was limited by short photoluminescence (PL) wavelength. It is great desirable to develop g-C3N4 nanomaterials with long PL wavelength and high quantum yield to expand their application. Herein phenyl-modified and sulfur doped g-C3N4 (PhCNS) powders with tunable PL peak from 520 to 630 nm were prepared by copolymerization of 2,4-diamino-6-phenyl-1,3,5-triazine and trithiocyanuric acid. The copolymerization process of PhCNS powders was proposed after chemical structure characterization and PL mechanism of PhCNS powders were investigated by transient fluorescence. In virtue of tunable PL color, broad PL peak, and high quantum yield, PhCNS powders were utilized to fabricate green, yellow, and white light-emitting diodes with high color quality and PhCNS nanosheets were applied for multicolor bioimaging. This work provides a pathway for exploring g-C3N4 nanomaterials with long PL wavelength and facilitates their application in biocompatible optoelectronic devices, fluorescent bioimaging.
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