Tunable fluorescent carbon dots: synthesis progress, fluorescence origin, selective and sensitive volatile organic compounds detection

Dolai, Susmita; Rajendran, Sathish; UshaVipinachandran, Varsha; Ray, Sekhar C.; Klusoň, Petr

doi:10.1080/10408436.2020.1830750

Cited by 25 publications

(23 citation statements)

References 122 publications

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“…The second one is related to the surface states formed by various surface functional groups. The third is the synergistic effect of the carbon core and surface functional groups. ,− In this work, the double peaks of PL excitation spectra coincide with π → π* absorption peaks of the graphitized carbon core and n → π* absorption peaks of surface groups. This result indicates that the PL processes of CQDs are related to electronic transitions and there is strong coupling between core and surface functional groups.…”

mentioning

confidence: 55%

One-Step Green Solvothermal Synthesis of Full-Color Carbon Quantum Dots Based on a Doping Strategy

Zhang

Chao

et al. 2021

J. Phys. Chem. Lett.

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Proposing a simple strategy for developing full-color carbon quantum dots (CQDs) and exploring how the luminescence can be tuned and improved is attractive and encouraging. Herein, blue, green, yellow-green, and orange-red CQDs doped with heteroatoms were synthesized in one pot and separated by column chromatography, with emission peaks of 435 nm, 495 nm [photoluminescence quantum yield (PLQY) of 88.9%], 525 nm, and 595 nm (full width at half-maximum of 31 nm), respectively. The abundant C–O/C–O–C electron donor groups greatly improve the PLQY of green CQDs, and the expended effective conjugated domains (particle size, doped chlorine, and conjugated nitrogen) of CQDs boost the red-shifts of emission spectra. Energy transfer (ET) in a concentrated mixed solution of CQDs was discovered, and possible ET mechanisms are proposed. Furthermore, a high-efficiency white light-emitting diode with Commission Internationale de L’Eclairage coordinates of (0.361, 0.369), a correlated color temperature of 4534 K, and a high color rendering index of 90.8 was fabricated.

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mentioning

confidence: 55%

One-Step Green Solvothermal Synthesis of Full-Color Carbon Quantum Dots Based on a Doping Strategy

Zhang

Chao

et al. 2021

J. Phys. Chem. Lett.

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“…This methodology has gained considerable popularity in recent years due to its operational simplicity, controllable reaction conditions, the possibility of using inexpensive raw material as a precursor, and the feasibility of a one-step high-volume CDs synthesis 70,[109][110][111] .…”

Section: Bottom-up Approachmentioning

confidence: 99%

“…Various reports have confirmed the bottom-up synthesis of CDs using small organic molecules as the precursor via combustion, plasma, and thermal synthesis approach [112][113][114] . In these processes, the small molecule precursors of CDs undergo multiple critical steps, including dehydration, condensation, polymerization, and further carbonization and modification 70 .…”

Section: Bottom-up Approachmentioning

confidence: 99%

“… 112–114 In these processes, the small molecule precursors undergo multiple critical steps, including dehydration, condensation, polymerization, and further carbonization and modification. 70 …”

Section: Strategies Of Carbon Dots Synthesismentioning

confidence: 99%

“…CNDs have been extensively studied to understand better the origin of their photophysical behaviour 10,[67][68][69][70] and to develop better synthesis routes in which size and surface chemistry can be finely tuned [71][72][73] .…”

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confidence: 99%

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Carbon dots: a novel platform for biomedical applications

et al. 2022

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CARBON DOTS: Bioimaging and Anticancer Drug Delivery

Bartkowski,

Zhou,

Nabil Amin Mustafa

et al. 2024

Chemistry A European J

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Cancer, responsible for approximately 10 million lives annually, urgently requires innovative treatments, as well as solutions to mitigate the limitations of traditional chemotherapy, such as long‐term adverse side effects and multidrug resistance. This review focuses on Carbon Dots (CDs), an emergent class of nanoparticles (NPs) with remarkable physicochemical and biological properties, and their burgeoning applications in bioimaging and as nanocarriers in drug delivery systems for cancer treatment. The review initiates with an overview of NPs as nanocarriers, followed by an in‐depth look into the biological barriers that could affect their distribution, from barriers to administration, to intracellular trafficking. It explores CDs' synthesis, both bottom‐up and top‐down approaches, and their notable biocompatibility, supported by a selection of in vitro, in vivo, and ex vivo studies. Special attention is given to CDs' role in bioimaging, highlighting their optical properties. The discussion extends to their emerging significance as drug carriers, particularly in the delivery of doxorubicin and other anticancer agents, underscoring recent advancements and challenges in this field with examples of other promising bioapplications, emergent owing to the NPs flexible design. As research on CDs evolves, we envisage key challenges, as well as the potential of CD‐based systems in bioimaging and cancer therapy.

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Tunable fluorescent carbon dots: synthesis progress, fluorescence origin, selective and sensitive volatile organic compounds detection

Cited by 25 publications

References 122 publications

One-Step Green Solvothermal Synthesis of Full-Color Carbon Quantum Dots Based on a Doping Strategy

One-Step Green Solvothermal Synthesis of Full-Color Carbon Quantum Dots Based on a Doping Strategy

Carbon dots: a novel platform for biomedical applications

CARBON DOTS: Bioimaging and Anticancer Drug Delivery

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