Photoluminescence: Synthesis of Carbon Dots with Multiple Color Emission by Controlled Graphitization and Surface Functionalization (Adv. Mater. 1/2018)

Miao, Xiang; Qu, Dan; Yang, Dongxue; Nie, Bing; Zhao, Yikang; Fan, Hongyou; Sun, Zaicheng

doi:10.1002/adma.201870002

Cited by 82 publications

(93 citation statements)

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“…This is in agreement with the TEM and AFM results. 52 The particle size has little inuence on the maximum emission wavelength, in agreement with previously reported results. 49 The Raman spectra provide strong evidence for ordered sp 2 carbon and disordered sp 3 carbon.…”

Section: Resultssupporting

confidence: 92%

Solvent-controlled synthesis of multicolor photoluminescent carbon dots for bioimaging

Yang

Xia

2019

RSC Adv.

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Section: Resultssupporting

confidence: 92%

Solvent-controlled synthesis of multicolor photoluminescent carbon dots for bioimaging

Yang

Xia

2019

RSC Adv.

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“…Currently, several kinds of CDs with full‐spectrum emission have been synthesized and used in various applications. [ 16–21 ] For examples, Lin et al. prepared CDs with blue, green, or red emission by modifying the carbon source ( o ‐, m ‐, or p ‐phenylenediamine).…”

Section: Introductionmentioning

confidence: 99%

Rational Design of Multi‐Color‐Emissive Carbon Dots in a Single Reaction System by Hydrothermal

et al. 2020

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As an emerging building unit, carbon dots (CDs) have been igniting the revolutionaries in the fields of optoelectronics, biomedicine, and bioimaging. However, the difficulty of synthesizing CDs in aqueous solution with full‐spectrum emission severely hinders further investigation of their emission mechanism and their extensive applications in white light emitting diodes (LEDs). Here, the full‐color‐emission CDs with a unique structure consisting of sp3‐hybridized carbon cores with small domains of partially sp2‐hybridized carbon atoms are reported. First‐principle calculations are initially used to predict that the transformation from sp3 to sp2 hybridization redshifts the emission of CDs. Guided by the theoretical predictions, a simple, convenient, and controllable route to hydrothermally prepare CDs in a single reaction system is developed. The prepared CDs have full‐spectrum emission with an unprecedented two‐photon emission across the whole visible color range. These full‐color‐emission CDs can be further nurtured by slight modifications of the reaction conditions (e.g., temperature, pH) to generate the emission color from blue to red. Finally a flexible LEDs with full‐color emission by using epoxy CDs films is developed, indicating that the strategy affords an industry translational potential over traditional fluorophores.

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“…39 According to recent reports, results have been published showing that CDs can be immobilized as matrix films by dissolving them in polymeric solutions such as poly(ethylene glycol) and PVA. [40][41][42] In this study, we have examined such features especially on the food-coating qualities of CDs and PVA. The acceleration of biological events that cause deterioration in post-harvest vegetables and fruits causes changes in the nutritional value, quality, aroma, texture, and appearance of foods.…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of water-soluble fluorescent carbon dots from rosemary leaves: Applications in food storage capacity, fingerprint detection, and antibacterial activity

Eskalen

Çeşme

Kerli

et al. 2020

Journal of Chemical Research

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Blue fluorescent carbon dots are synthesized via a one-step hydrothermal method using rosemary leaves as a carbon source. The obtained carbon dots are characterized by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, UV-Vis, FTIR, and fluorescence spectrometry. The results show that carbon dots gave a maximum emission peak at 422 nm when excited at 332 nm. The average particle diameter of the synthesized spherical carbon dots is found to be 16.13 nm with a 4.6-nm standard deviation. The diameters of the produced carbon dots vary, as is evident from standard deviation heights, resulting in multicolor emission spectra. The fruit storage experiment is carried out by investigating the qualitative antioxidant ability of the produced carbon dots. The results obtained for polyvinyl alcohol–carbon dot–coated samples differ remarkably compared to polyvinyl alcohol–coated samples only. The polyvinyl alcohol–carbon dot composition is used in latent fingerprint detection applications. In analyses made on a glass surface, fingerprints cannot be monitored on the glass surface with the polyvinyl alcohol layer under ultraviolet light, while they are observed on the surface covered with the polyvinyl alcohol–carbon dot composition. Moreover, biological activity against Gram-positive, Gram-negative, and yeast strains are investigated.

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Photoluminescence: Synthesis of Carbon Dots with Multiple Color Emission by Controlled Graphitization and Surface Functionalization (Adv. Mater. 1/2018)

Cited by 82 publications

References 0 publications

Solvent-controlled synthesis of multicolor photoluminescent carbon dots for bioimaging

Solvent-controlled synthesis of multicolor photoluminescent carbon dots for bioimaging

Rational Design of Multi‐Color‐Emissive Carbon Dots in a Single Reaction System by Hydrothermal

Green synthesis of water-soluble fluorescent carbon dots from rosemary leaves: Applications in food storage capacity, fingerprint detection, and antibacterial activity

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