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Monofactorial control of carbon dot emission in solvent-free synthesis for wide-gamut light emitting diodes.

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Title: Monofactorial control of carbon dot emission in solvent-free synthesis for wide-gamut light emitting diodes.
Authors: Wang, Xin1,2 (AUTHOR), Yao, Boxuan1 (AUTHOR), Song, Wenjing1 (AUTHOR), Zhang, Junnan1 (AUTHOR), Zhou, Mingyang1 (AUTHOR), Hu, Wei1 (AUTHOR), Zhao, Lei3 (AUTHOR), Liu, Jian4 (AUTHOR), Yang, Shenghong1 (AUTHOR) yangsh@qlu.edu.cn
Source: Chemical Engineering Journal. Sep2025, Vol. 520, pN.PAG-N.PAG. 1p.
Subjects: Carbon nanodots, Light emitting diodes, Cell imaging, Chemical synthesis, Quantum efficiency, Fluorophores
Abstract: The flexible regulation of carbon dots (CDs) emission wavelengths through controlling single variable remains a significant challenge. In this study, we present a novel single-factor tuning preparation strategy for synthesizing full-color fluorescent CDs in an open, rapid and solvent-free reaction system. Tunable purple-to-red emission CDs were prepared within 5 min solely by adjusting o -phenylenediamine/dicarboxylic acid mass ratios. The production yields and quantum yield of CDs can reach up to 70.5 % and 34.1 %, respectively. Changing the reactants ratio affects the dehydration and carbonization. This led to an orderly red-shift in CDs emission wavelength. Detailed characterizations and theoretical calculations reveal key insight. The transformation in optical features correlates with a gradient increase in particle size. It also correlates with an increase in graphitic nitrogen and sp2-conjugated domains. These CDs exhibit excellent biocompatibility and stable fluorescence characteristics, making them successful for bioimaging applications in live cells and zebrafish embryos. Furthermore, leveraging the simplicity and solvent-free nature of the synthesis, full-color and high color rendering index (CRI > 83) white light LEDs with tunable color temperature were successfully fabricated, demonstrating substantial application potential for commercial lighting. The proposed single-factor solvent-free synthesis strategy may further improve the industrialization potential of CDs-based optical materials. [Display omitted] • A novel single-factor tuning strategy to synthesize full-color fluorescent CDs. • Full-color fluorescent CDs were prepared in rapid and solvent-free reaction system. • The single-factor tuning strategy makes the luminescence mechanism clearer. • Full-color fluorescent CDs has successfully used in bioimaging and lighting field. [ABSTRACT FROM AUTHOR]
Copyright of Chemical Engineering Journal is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 187115629
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
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  Data: Monofactorial control of carbon dot emission in solvent-free synthesis for wide-gamut light emitting diodes.
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  Data: <searchLink fieldCode="AR" term="%22Wang%2C+Xin%22">Wang, Xin</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yao%2C+Boxuan%22">Yao, Boxuan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Song%2C+Wenjing%22">Song, Wenjing</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Junnan%22">Zhang, Junnan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhou%2C+Mingyang%22">Zhou, Mingyang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hu%2C+Wei%22">Hu, Wei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhao%2C+Lei%22">Zhao, Lei</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Jian%22">Liu, Jian</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Shenghong%22">Yang, Shenghong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> yangsh@qlu.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Chemical+Engineering+Journal%22">Chemical Engineering Journal</searchLink>. Sep2025, Vol. 520, pN.PAG-N.PAG. 1p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Carbon+nanodots%22">Carbon nanodots</searchLink><br /><searchLink fieldCode="DE" term="%22Light+emitting+diodes%22">Light emitting diodes</searchLink><br /><searchLink fieldCode="DE" term="%22Cell+imaging%22">Cell imaging</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+synthesis%22">Chemical synthesis</searchLink><br /><searchLink fieldCode="DE" term="%22Quantum+efficiency%22">Quantum efficiency</searchLink><br /><searchLink fieldCode="DE" term="%22Fluorophores%22">Fluorophores</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The flexible regulation of carbon dots (CDs) emission wavelengths through controlling single variable remains a significant challenge. In this study, we present a novel single-factor tuning preparation strategy for synthesizing full-color fluorescent CDs in an open, rapid and solvent-free reaction system. Tunable purple-to-red emission CDs were prepared within 5 min solely by adjusting o -phenylenediamine/dicarboxylic acid mass ratios. The production yields and quantum yield of CDs can reach up to 70.5 % and 34.1 %, respectively. Changing the reactants ratio affects the dehydration and carbonization. This led to an orderly red-shift in CDs emission wavelength. Detailed characterizations and theoretical calculations reveal key insight. The transformation in optical features correlates with a gradient increase in particle size. It also correlates with an increase in graphitic nitrogen and sp2-conjugated domains. These CDs exhibit excellent biocompatibility and stable fluorescence characteristics, making them successful for bioimaging applications in live cells and zebrafish embryos. Furthermore, leveraging the simplicity and solvent-free nature of the synthesis, full-color and high color rendering index (CRI > 83) white light LEDs with tunable color temperature were successfully fabricated, demonstrating substantial application potential for commercial lighting. The proposed single-factor solvent-free synthesis strategy may further improve the industrialization potential of CDs-based optical materials. [Display omitted] • A novel single-factor tuning strategy to synthesize full-color fluorescent CDs. • Full-color fluorescent CDs were prepared in rapid and solvent-free reaction system. • The single-factor tuning strategy makes the luminescence mechanism clearer. • Full-color fluorescent CDs has successfully used in bioimaging and lighting field. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Chemical Engineering Journal is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.cej.2025.165821
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      – Code: eng
        Text: English
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        StartPage: N.PAG
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      – SubjectFull: Carbon nanodots
        Type: general
      – SubjectFull: Light emitting diodes
        Type: general
      – SubjectFull: Cell imaging
        Type: general
      – SubjectFull: Chemical synthesis
        Type: general
      – SubjectFull: Quantum efficiency
        Type: general
      – SubjectFull: Fluorophores
        Type: general
    Titles:
      – TitleFull: Monofactorial control of carbon dot emission in solvent-free synthesis for wide-gamut light emitting diodes.
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            NameFull: Wang, Xin
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            NameFull: Yao, Boxuan
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            – D: 15
              M: 09
              Text: Sep2025
              Type: published
              Y: 2025
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