Fluorescent carbon quantum dots with controllable physicochemical properties fantastic for emerging applications: A review
Abstract Carbon quantum dots (CQDs) have emerged as prominent contenders in the realm of luminescent nanomaterials over the past decade owing to their tunable optical properties, robust photostability, versatile surface functionalization and doping potential, low toxicity, and straightforward synthe...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2024-03-01
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| Series: | Carbon Neutralization |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/cnl2.120 |
| _version_ | 1827572253570629632 |
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| author | Wenbo You Wentao Zou Siyi Jiang Jiahao Zhang Yunchen Ge Gui Lu Detlef W. Bahnemann Jia Hong Pan |
| author_facet | Wenbo You Wentao Zou Siyi Jiang Jiahao Zhang Yunchen Ge Gui Lu Detlef W. Bahnemann Jia Hong Pan |
| author_sort | Wenbo You |
| collection | DOAJ |
| description | Abstract Carbon quantum dots (CQDs) have emerged as prominent contenders in the realm of luminescent nanomaterials over the past decade owing to their tunable optical properties, robust photostability, versatile surface functionalization and doping potential, low toxicity, and straightforward synthesis utilizing environmentally friendly precursors. In this review, we commence with a concise introduction, presenting both top‐down and bottom‐up strategies for the eco‐friendly synthesis of CQDs. Subsequently, we delve into a comprehensive examination of CQDs' structure and optical characteristics, encompassing their ultraviolet–visible absorption properties, surface confinement effects, and surface state emissions contributing to room‐temperature photoluminescence (PL). This review proceeds to elucidate recent advancements in modification strategies for CQDs, specifically focusing on surface oxidation, passivation, and the incorporation of heteroatoms. These strategies serve to afford control over the physicochemical properties, facilitating the enhancement of PL through the decoration of highly visible‐responsive CQDs. This enhancement is achieved by suppressing the nonradiative recombination of electron‐hole pairs, enabling red/blue shifts in CQDs for the generation of a full‐color emission spectrum, and regulating the band‐gap and surface states to broaden the photoabsorption range. Finally, we offer an overview of the most recent developments in the applications of fluorescent CQDs, emphasizing their utility in biomedicine, fluorescent sensors, lighting, and displays, as well as photocatalysis. |
| first_indexed | 2024-04-24T16:26:43Z |
| format | Article |
| id | doaj.art-481420f557bf4ed4a4daa80e584bb97a |
| institution | Directory Open Access Journal |
| issn | 2769-3325 |
| language | English |
| last_indexed | 2024-04-24T16:26:43Z |
| publishDate | 2024-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | Carbon Neutralization |
| spelling | doaj.art-481420f557bf4ed4a4daa80e584bb97a2024-03-30T18:01:27ZengWileyCarbon Neutralization2769-33252024-03-013224528410.1002/cnl2.120Fluorescent carbon quantum dots with controllable physicochemical properties fantastic for emerging applications: A reviewWenbo You0Wentao Zou1Siyi Jiang2Jiahao Zhang3Yunchen Ge4Gui Lu5Detlef W. Bahnemann6Jia Hong Pan7State Key Laboratory of Featured Metal Materials and Life‐Cycle Safety for Composite Structures, School of Resources, Environments and Materials Guangxi University Nanning ChinaInternational Medical College Chongqing Medical University Chongqing ChinaCollege of Environmental Science and Engineering North China Electric Power University Beijing ChinaDepartment of Earth Science and Engineering Imperial College London London UKInstitute of New Energy and Low‐Carbon Technology (INELT) Sichuan University Chengdu ChinaSchool of Energy, Power and Mechanical Engineering North China Electric Power University Beijing ChinaInstitut für Technische Chemie Leibniz Universität Hannover Hannover GermanyState Key Laboratory of Featured Metal Materials and Life‐Cycle Safety for Composite Structures, School of Resources, Environments and Materials Guangxi University Nanning ChinaAbstract Carbon quantum dots (CQDs) have emerged as prominent contenders in the realm of luminescent nanomaterials over the past decade owing to their tunable optical properties, robust photostability, versatile surface functionalization and doping potential, low toxicity, and straightforward synthesis utilizing environmentally friendly precursors. In this review, we commence with a concise introduction, presenting both top‐down and bottom‐up strategies for the eco‐friendly synthesis of CQDs. Subsequently, we delve into a comprehensive examination of CQDs' structure and optical characteristics, encompassing their ultraviolet–visible absorption properties, surface confinement effects, and surface state emissions contributing to room‐temperature photoluminescence (PL). This review proceeds to elucidate recent advancements in modification strategies for CQDs, specifically focusing on surface oxidation, passivation, and the incorporation of heteroatoms. These strategies serve to afford control over the physicochemical properties, facilitating the enhancement of PL through the decoration of highly visible‐responsive CQDs. This enhancement is achieved by suppressing the nonradiative recombination of electron‐hole pairs, enabling red/blue shifts in CQDs for the generation of a full‐color emission spectrum, and regulating the band‐gap and surface states to broaden the photoabsorption range. Finally, we offer an overview of the most recent developments in the applications of fluorescent CQDs, emphasizing their utility in biomedicine, fluorescent sensors, lighting, and displays, as well as photocatalysis.https://doi.org/10.1002/cnl2.120biomedicinecarbon quantum dotsfluorescent imagingnanomaterials synthesisphotoluminescenceUV‐visible spectroscopy |
| spellingShingle | Wenbo You Wentao Zou Siyi Jiang Jiahao Zhang Yunchen Ge Gui Lu Detlef W. Bahnemann Jia Hong Pan Fluorescent carbon quantum dots with controllable physicochemical properties fantastic for emerging applications: A review Carbon Neutralization biomedicine carbon quantum dots fluorescent imaging nanomaterials synthesis photoluminescence UV‐visible spectroscopy |
| title | Fluorescent carbon quantum dots with controllable physicochemical properties fantastic for emerging applications: A review |
| title_full | Fluorescent carbon quantum dots with controllable physicochemical properties fantastic for emerging applications: A review |
| title_fullStr | Fluorescent carbon quantum dots with controllable physicochemical properties fantastic for emerging applications: A review |
| title_full_unstemmed | Fluorescent carbon quantum dots with controllable physicochemical properties fantastic for emerging applications: A review |
| title_short | Fluorescent carbon quantum dots with controllable physicochemical properties fantastic for emerging applications: A review |
| title_sort | fluorescent carbon quantum dots with controllable physicochemical properties fantastic for emerging applications a review |
| topic | biomedicine carbon quantum dots fluorescent imaging nanomaterials synthesis photoluminescence UV‐visible spectroscopy |
| url | https://doi.org/10.1002/cnl2.120 |
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