Journal
MOLECULES
Volume 27, Issue 14, Pages -Publisher
MDPI
DOI: 10.3390/molecules27144620
Keywords
carbon dots; halogen doping; fluorescence; applications; sensors; biomedicine
Funding
- Guangdong Natural Science Foundation [2021A1515010304]
- Enhancing School with Innovation of Guangdong Ocean University [230419054]
- Laboratory of Marine Chemistry Resource Utilization and Research [Q17092]
- College Students Innovation Program of Guangdong Ocean University [580520106]
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Carbon dots (CDs) have many advantages, such as tunable photoluminescence and large two-photon absorption cross-sections. Halogen doping improves the optical and physicochemical properties of CDs, expanding their applications. Challenges for the future include elucidating the luminescence mechanism, fine doping, and practical device incorporation.
Carbon dots (CDs) have many advantages, such as tunable photoluminescence, large two-photon absorption cross-sections, easy functionalization, low toxicity, chemical inertness, good dispersion, and biocompatibility. Halogen doping further improves the optical and physicochemical properties of CDs, extending their applications in fluorescence sensors, biomedicine, photocatalysis, anti-counterfeiting encryption, and light-emitting diodes. This review briefly describes the preparation of CDs via the top-down and bottom-up approaches and discusses the preparation methods and applications of halogen (fluorine, chlorine, bromine, and iodine)-doped CDs. The main challenges of CDs in the future are the elucidation of the luminescence mechanism, fine doping with elements (proportion, position, etc.), and their incorporation in practical devices.
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