A review on syntheses, properties, characterization and bioanalytical applications of fluorescent carbon dots

Zuo, Pengli; Xiuhua, Lu; Sun, Zhigang; Guo, Yuhan; He, Hua

doi:10.1007/s00604-015-1705-3

Cited by 594 publications

(299 citation statements)

References 135 publications

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“…The QY of the subsequent phosphorus-containing C-dots was 21.65%. 11 In comparison with other approaches, the microwaveassisted method is more convenient and rapidly heats the carbon precursors. This method also simplifies the synthesis process, so the C-dots are readily obtained within a few min with improved QY.…”

Section: Microwave-assisted Methodsmentioning

confidence: 99%

“…The resultant C-dots possessed a magnificent fluorescence effect and thermodynamic stability in aqueous solution. 11 The extent of C-dots can be managed by changing the current density. Larger C-dots with longer emission wavelength can be formed by lowering the current density.…”

Section: Electrochemical Methodsmentioning

confidence: 99%

“…With activation of these C-dots at 400 nm, the fluorescence QY was around 4% to more than 10%. 11 In addition, doping of C-dots with inorganic salts such as zinc acetate and Na 2 S or NaOH further resulted in an enhanced QY, in which the dopants (e.g. ZnO and ZnS) possibly served as a helper passivating mediator for the C-dots.…”

Section: Laser Ablationmentioning

confidence: 99%

“…Bottom-up strategies incorporate template strategy, thermal routes, pyrolytic process, hydrothermal and aqueous methods, supported synthetic technique, reverse micelle technique, microwave-assisted strategy, and substance oxidation. 11 The yield of CQDs could be enhanced during arrangement or posttreatment. Alteration of CQDs is additionally vital to obtain favorable surface properties, which are key for solvency and applications.…”

Section: Synthesismentioning

confidence: 99%

“…Laser irradiation develops the different sized CNPs; large particles are effortlessly disposed of during the centrifugation process, so the resulting CNPs posses low yield, and the use proficiency of carbon matter was also less. 11 Carbon particles can also be fabricated in ethanol via the laser ablation technique. 15 …”

Section: Laser Ablationmentioning

confidence: 99%

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Carbon Quantum Dots: Synthesis, Characterization and Biomedical Applications

Singh

Arora

Dhiman

et al. 2018

tjps

148

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ÖZ INTRODUCTIONLuminescent semiconductor nano crystals of size 1-10 nanometers with rich surface chemistry and unique optical properties are called quantum dots (QDs). Different compounds belonging to group 2 to 4 and 3 to 5, e.g., Ag, Cd, Zn, Hg, Se, Ln, Pb, P, and Te lead to the formation of QDs. These have become an obligatory tool for traceable targeted delivery, biomedical research, and different therapy applications. Longterm fluorescence imaging and the detection of the properties of these nanoparticles (NPs) have made them imperative in biomedical research. Different properties of QDs such as resistance to photobleaching, superior signal brightness, larger absorption coefficients, light emission, and contemporaneous excitation of different fluorescence colors make them unique, as well as indispensable. Advances in quantum surface chemistry studies have led to the development of polymer-encapsulated probes with high fluorescence properties that are stable under complex biologic conditions. To use QDs in biologic studies, it is extremely important to cap or passivate the ZnS or CdS layer around the QD (CdSe). This layering of ZnS or CdS leads to the improvement of the fluorescence quantum yield (QY) of QDs and provides protection against photo-oxidation. QDs have had a major impact in molecular diagnostics and in tissue molecular KKN, ayırt edici özellik olarak, 10 nm'den daha küçük boyutu olan, küçük karbon nanopartiküllerdir ve izlenebilir hedeflenmiş salım, biyomedikal araştırma ve farklı terapi uygulamaları için zorunlu bir araç haline gelmiştir. Bu çalışmanın amacı, KKN'nın sentezi, karakterizasyon teknikleri ve biyomedikal uygulamaları ile ilgili güncel literatürü bir araya getirmekti. KKN sentezi için iki tip yapay yöntem yani yukarıdan aşağıya yaklaşım ve aşağıdan yukarıya yaklaşım kullanıldı. Yukarıdan aşağıya doğru yaklaşım, ark boşaltma yöntemini, lazer ablasyon yöntemini ve elektrokimyasal yöntemi içermektedir. Öte yandan aşağıdan yukarı yaklaşım, termal yöntem, mikrodalga destekli yöntem, hidrotermal ve sulu yöntem ve kalıp yöntemini içerir. Bu derlemede, CQD'nin biyomedikal alanda son dönemdeki ilerlemesini, sentetik yöntemlerine, karakterizasyonuna ve farklı uygulamalara odaklanarak açıkladık. Karbon noktaları, in vivo ve in vitro biyolojik görüntüleme ve etken madde salım çalışmaları için kapsamlı yeterliliğe sahiptir. Karbon noktaları için daha fazla sitotoksisite araştırması yapılmasına ihtiyaç duyulmasına rağmen, önceki veriler etken madde salımı ve biyolojik görüntüleme çalışmalarında karbon noktalarının parlak geleceğini göstermektedir. Anahtar kelimeler: Karbon kuantum noktalar, nanopartiküller, kuantum verimi, karbon nokta, fotolüminesans, nanokompozitler CQD are small carbon nanoparticles smallerl than 10 nm comprising distinctive properties, which have become an obligatory tool for traceable targeted delivery, biomedical research, and different therapy applications. The objective of the present work was to consolidate the current literature on the synthesis, characterizati...

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Section: Microwave-assisted Methodsmentioning

confidence: 99%

Section: Electrochemical Methodsmentioning

confidence: 99%

Section: Laser Ablationmentioning

confidence: 99%

Section: Synthesismentioning

confidence: 99%

Section: Laser Ablationmentioning

confidence: 99%

See 3 more Smart Citations

Carbon Quantum Dots: Synthesis, Characterization and Biomedical Applications

Singh

Arora

Dhiman

et al. 2018

tjps

148

View full text Add to dashboard Cite

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Carbon Dots: Emerging Green Nanoprobes and Their Diverse Applications

Agarwal¹,

Bhatia²

2021

Functionalized Nanomaterials for Catalytic Application

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Multicolor Afterglow Carbon Dots: Luminescence Regulation, Preparation, and Application

Zhang,

Chen,

Liu

et al. 2024

Adv Funct Materials

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Afterglow materials have attracted much attention owing to their long luminescence lifetimes, large Stokes shifts, and emission without real‐time excitation. Compared with traditional organic afterglow materials, carbon dots (CDs), as a new afterglow material, have superior properties such as easy preparation, low toxicity, and low cost. The emission color of afterglow CDs can be regulated by external factors such as excitation wavelength, temperature, and time, which is highly significant for expanding the diversified applications to make them available for biotechnology and information applications. This review summarizes the research progress of multicolor afterglow CDs in recent years, including luminescence regulation strategies, preparation methods, and applications. First, the multicolor afterglow CDs are classified into three strategies: multicolor room temperature phosphorescence (RTP), thermally activated delayed fluorescence converted to RTP, and delayed fluorescence based on Förster resonance energy transfer, and the strategies for regulating their luminescence properties are analyzed. Second, the preparation methods of achieving multicolor afterglow CDs are summarized in both matrix‐free and matrix‐confined aspects. Then, applications in anticounterfeiting and information encryption, sensing and bioimaging are introduced in detail. Finally, the future challenges and opportunities of multicolor afterglow CDs are prospected to provide ideas for their controlled design and wide application.

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A review on syntheses, properties, characterization and bioanalytical applications of fluorescent carbon dots

Cited by 594 publications

References 135 publications

Carbon Quantum Dots: Synthesis, Characterization and Biomedical Applications

Carbon Quantum Dots: Synthesis, Characterization and Biomedical Applications

Carbon Dots: Emerging Green Nanoprobes and Their Diverse Applications

Multicolor Afterglow Carbon Dots: Luminescence Regulation, Preparation, and Application

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