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Blue, Yellow, and Red Carbon Dots from Aromatic Precursors for Light-Emitting Diodes
In this work, multicolor fluorescent carbon dots with red (R-CDs), yellow (Y-CDs), and blue (B-CDs) emissions were prepared by choosing proper aromatic precursors with different amounts of benzene rings through a simple solvothermal method. The characterization showed that the prepared carbon dots w...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10096300/ https://www.ncbi.nlm.nih.gov/pubmed/37049718 http://dx.doi.org/10.3390/molecules28072957 |
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author | Liu, Zhenzhen Lu, Xiaofei Liu, Menglin Wang, Wenjing |
author_facet | Liu, Zhenzhen Lu, Xiaofei Liu, Menglin Wang, Wenjing |
author_sort | Liu, Zhenzhen |
collection | PubMed |
description | In this work, multicolor fluorescent carbon dots with red (R-CDs), yellow (Y-CDs), and blue (B-CDs) emissions were prepared by choosing proper aromatic precursors with different amounts of benzene rings through a simple solvothermal method. The characterization showed that the prepared carbon dots were spherical with a size under 10 nm, rich surface functional groups, and good stability. The emission wavelengths were located at 440, 530, and 580 nm under the excitation of 370 nm. The relative fluorescence quantum yield (QY) of R-CDs, Y-CDs, and B-CDs was 11%, 59%, and 33%, respectively. The related characterization demonstrated that the redshift in the photoluminescence was caused by the synergistic effect of the increasing graphitic nitrogen content, quantum size effect and surface oxidation state. By mixing the three prepared CDs into a PVA matrix, the transparent and flexible films produced relucent blue, yellow, and red emissions under 365 nm UV light, and solid-state quenching was effectively avoided. LEDs were fabricated by using B-CDs, Y-CDs, and R-CDs/PVA with a semiconductor chip. These CDs-based LEDs produced bright blue, yellow, and red light with CIE color coordinates of (0.16, 0.02), (0.38, 0.58), and (0.50, 0.49) were successfully manufactured utilizing the prepared blue, yellow and red multicolor carbon dots as the solid luminescent materials. The results showed that the synthesized CDs can be potentially applied in multi-color monitors as a promising candidate for light-emitting diodes (LEDs). This work blazes a novel trail for the controllable preparation of multicolor fluorescent carbon dots. |
format | Online Article Text |
id | pubmed-10096300 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-100963002023-04-13 Blue, Yellow, and Red Carbon Dots from Aromatic Precursors for Light-Emitting Diodes Liu, Zhenzhen Lu, Xiaofei Liu, Menglin Wang, Wenjing Molecules Article In this work, multicolor fluorescent carbon dots with red (R-CDs), yellow (Y-CDs), and blue (B-CDs) emissions were prepared by choosing proper aromatic precursors with different amounts of benzene rings through a simple solvothermal method. The characterization showed that the prepared carbon dots were spherical with a size under 10 nm, rich surface functional groups, and good stability. The emission wavelengths were located at 440, 530, and 580 nm under the excitation of 370 nm. The relative fluorescence quantum yield (QY) of R-CDs, Y-CDs, and B-CDs was 11%, 59%, and 33%, respectively. The related characterization demonstrated that the redshift in the photoluminescence was caused by the synergistic effect of the increasing graphitic nitrogen content, quantum size effect and surface oxidation state. By mixing the three prepared CDs into a PVA matrix, the transparent and flexible films produced relucent blue, yellow, and red emissions under 365 nm UV light, and solid-state quenching was effectively avoided. LEDs were fabricated by using B-CDs, Y-CDs, and R-CDs/PVA with a semiconductor chip. These CDs-based LEDs produced bright blue, yellow, and red light with CIE color coordinates of (0.16, 0.02), (0.38, 0.58), and (0.50, 0.49) were successfully manufactured utilizing the prepared blue, yellow and red multicolor carbon dots as the solid luminescent materials. The results showed that the synthesized CDs can be potentially applied in multi-color monitors as a promising candidate for light-emitting diodes (LEDs). This work blazes a novel trail for the controllable preparation of multicolor fluorescent carbon dots. MDPI 2023-03-26 /pmc/articles/PMC10096300/ /pubmed/37049718 http://dx.doi.org/10.3390/molecules28072957 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Liu, Zhenzhen Lu, Xiaofei Liu, Menglin Wang, Wenjing Blue, Yellow, and Red Carbon Dots from Aromatic Precursors for Light-Emitting Diodes |
title | Blue, Yellow, and Red Carbon Dots from Aromatic Precursors for Light-Emitting Diodes |
title_full | Blue, Yellow, and Red Carbon Dots from Aromatic Precursors for Light-Emitting Diodes |
title_fullStr | Blue, Yellow, and Red Carbon Dots from Aromatic Precursors for Light-Emitting Diodes |
title_full_unstemmed | Blue, Yellow, and Red Carbon Dots from Aromatic Precursors for Light-Emitting Diodes |
title_short | Blue, Yellow, and Red Carbon Dots from Aromatic Precursors for Light-Emitting Diodes |
title_sort | blue, yellow, and red carbon dots from aromatic precursors for light-emitting diodes |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10096300/ https://www.ncbi.nlm.nih.gov/pubmed/37049718 http://dx.doi.org/10.3390/molecules28072957 |
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