Fluorescent carbon dots functionalization

Chen, Binbin; Liu, Meng Li; Li, Chun Mei; Huang, Cheng

doi:10.1016/j.cis.2019.06.008

Cited by 210 publications

(107 citation statements)

References 256 publications

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“…Earlier it was shown that appropriate temperature for conventional CDs synthesis from CA is 150°C-200°C [34,60]. The temperature in 170°C was chosen as the middle of the optimal interval and maintained constant in order to compare the results of pyrolysis for different samples.…”

Section: Preparation and Characterization Of Sio 2 @Cds Composites 3mentioning

confidence: 99%

“…For CDs obtained in bottom-up synthesis, the PL spectra are generally broad and dependent on the excitation wavelength (excitation-dependent photoluminescence). Quantum yield of CDs photoluminescence can vary from 1 to 99% depending on the precursors and pyrolysis conditions [34]. Due to the unclear mechanism of the bottom-up synthesis, a variation of the experimental conditions such as heating time and temperature cannot provide efficient control of CDs formation and their further aggregation [1,7,10,30,34].…”

Section: Introductionmentioning

confidence: 99%

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Benefit of porous silica nanoreactor in preparation of fluorescence carbon dots from citric acid

et al. 2020

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A facile and robust synthesis of carbon dots (CDs) emitting blue-light in water without activation and stabilization has been developed by pyrolysis of citric acid (CA) adsorbed in silica gel (SiO 2 ) pores. Effect of the host pore size on luminescent properties of SiO 2 @CDs nanocomposite as well as water suspension of CDs has been studied. The synthesis conditions such as concentration of the precursor, duration of synthesis also have been investigated. It has been demonstrated that upon the thermal treatment of silica gels saturated with CA (60% of maximum loading) at 170°C for 5-600 min, luminescent CDs are shaped inside the nanoreactor pores. These SiO 2 @CDs emit photoluminescence centered at 450 nm. Silica-immobilized CDs can be separated from the source molecules and sideproducts by centrifugation, which allows avoiding the dialysis of the resulted mixture and so improve the scaling of the synthesis. The CDs can be easily released from SiO 2 @CDs by washing it with water. Water-eluted CDs demonstrate photoluminescence at 447 nm. The smaller pore size of the host and longer time of thermal treatment promote the formation of the CDs with better photoluminescent peak symmetry and higher quantum yield up to 10.1%.

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Section: Preparation and Characterization Of Sio 2 @Cds Composites 3mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Benefit of porous silica nanoreactor in preparation of fluorescence carbon dots from citric acid

et al. 2020

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“…The hydrothermal method has been widely used for CD synthesis. [31][32][33] Briey, 0.5 g glucose and 0.5 g tyrosine were rstly dissolved and completely mixed in 6 mL deionized water. The mixture was transferred into a 25 mL Teon stainless steel autoclave and heated at 180 C for 9 h. The resultant product was puried in a centrifuge (5000 rpm) for 30 min to remove the agglomerated particles.…”

Section: Preparation Of Ncdsmentioning

confidence: 99%

Synthesis of N-doped carbon dots and application in vanillin detection based on collisional quenching

Wang

Yue

et al. 2019

RSC Adv.

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“…The heavy metal QDs biotoxicity encouraged the development of fluorescent carbon-based materials. Different synthesis strategies provide a structural continuum of nanoparticles from graphene flake-like GQDs (including graphene oxide), through crystalline graphite particles, to amorphous CDs (Zheng & Wu, 2017;Chen et al, 2019a). Their fluorescence emission, frequently excitation wavelength-dependent, may be regulated by heteroatom doping and sp 2 /sp 3 carbon hybridization ratio.…”

Section: Nanoparticles Used For Constructing Bionanohybridsmentioning

confidence: 99%

Nanoparticles as energy donors and acceptors in bionanohybrid systems

Sławski

Grzyb

2019

Acta Biochim Pol

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The bionanohybrids are the junctions of at least two objects of different origin: abiotic and biotic. The abiotic part is a nanoparticle (often a fluorescent quantum dot), the biotical one may be a protein (especially fluorescent one or redox-active one), nucleic acid, carbohydrate as well as a simple organic molecule. When such a junction undergoes illumination, the energy transfer between the partners is possible. The nanoparticles, depending on their characteristics, may be donors, acceptors or mediators of the energy transfer. In most cases, the mechanism of the transfer is the Förster resonance energy transfer (FRET) or the electron transfer (ET). Here, we reviewed the newest achievements in the field with special attention paid to those bionanohybrids which allow FRET or ET. Such nanohybrids are important not only for exploration of the mechanism of the partner interaction but mainly for working out nanobiodevices for biosensing and nanotools for modern therapies.

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Fluorescent carbon dots functionalization

Cited by 210 publications

References 256 publications

Benefit of porous silica nanoreactor in preparation of fluorescence carbon dots from citric acid

Benefit of porous silica nanoreactor in preparation of fluorescence carbon dots from citric acid

Synthesis of N-doped carbon dots and application in vanillin detection based on collisional quenching

Nanoparticles as energy donors and acceptors in bionanohybrid systems

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