Version 1
: Received: 20 September 2024 / Approved: 20 September 2024 / Online: 23 September 2024 (08:56:40 CEST)
How to cite:
Wu, J.; Liu, J.; Liu, X.; Zheng, J.; Chen, L.; Yang, Y.; Su, C. Carbon Dots and Their Films with Narrow Full Width At Half Maximum Orange Emission. Preprints2024, 2024091665. https://doi.org/10.20944/preprints202409.1665.v1
Wu, J.; Liu, J.; Liu, X.; Zheng, J.; Chen, L.; Yang, Y.; Su, C. Carbon Dots and Their Films with Narrow Full Width At Half Maximum Orange Emission. Preprints 2024, 2024091665. https://doi.org/10.20944/preprints202409.1665.v1
Wu, J.; Liu, J.; Liu, X.; Zheng, J.; Chen, L.; Yang, Y.; Su, C. Carbon Dots and Their Films with Narrow Full Width At Half Maximum Orange Emission. Preprints2024, 2024091665. https://doi.org/10.20944/preprints202409.1665.v1
APA Style
Wu, J., Liu, J., Liu, X., Zheng, J., Chen, L., Yang, Y., & Su, C. (2024). Carbon Dots and Their Films with Narrow Full Width At Half Maximum Orange Emission. Preprints. https://doi.org/10.20944/preprints202409.1665.v1
Chicago/Turabian Style
Wu, J., Yongzhen Yang and Chunhui Su. 2024 "Carbon Dots and Their Films with Narrow Full Width At Half Maximum Orange Emission" Preprints. https://doi.org/10.20944/preprints202409.1665.v1
Abstract
To obtain carbon dots (CDs) with narrow full width at half maximum (FWHM) and long-wavelength emission, carbon sources with high conjugate sizes and abundant functional groups can be employed to synthesis CDs. In this study, orange-emissive carbon dots (OCDs) were synthesized with phloroglucinol and rhodamine B as precursors. When the molar ratio of them was 30:1 and ethanol was served as solvent, OCDs with optimized emission wavelength at approximately 580 nm, an FWHM of 30 nm and a quantum yield (QY) of 27.31% were obtained. Subsequently, the OCDs were incorporated into polyvinyl alcohol (PVA) to fabricate solid-state OCDs/PVA fluorescent films, which exhibited an FWHM of 47 nm. The PVA matrix facilitated the dispersion of OCDs, thereby suppressing non-radiative energy transfer among the OCDs and enhancing luminescence efficiency. Consequently, compared with OCDs, the OCDs/PVA film exhibited significant luminescent enhancement, and the QY of the composite film was increased to 84.74%. Moreover, OCDs/PVA film show good transmittance and thermal stability. This research offers a solid theoretical and experimental foundation for the potential applications of CDs in the fields of solid-state lighting.
Keywords
phloroglucinol; orange emissive carbon dots; fluorescent films; narrow full width at half maximum
Subject
Chemistry and Materials Science, Nanotechnology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
