Green synthesis of biocompatible carbon dots using aqueous extract of Trapa bispinosa peel

Mewada, Ashmi; Pandey, Sunil; Shinde, Sachin M.; Mishra, Neeraj; Oza, Goldie; Thakur, Mukeshchand; Sharon, Maheshwar; Sharon, Madhuri

doi:10.1016/j.msec.2013.03.018

Cited by 272 publications

(159 citation statements)

References 22 publications

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“…High degree of graphitization of the C-dots sample is indicated by a relatively lower D/G ratio. A typical RS spectrum of C-dots from thermal decomposition of Trapa bispinosa peel is shown in Figure 5(A) [32]. In this case, the C-dots had both D (1331 cm −1 ) and G (1578 cm −1 ) bands, and the resulting D/G ratio of 0.59 indicates the nanocrystalline graphite structure of C-dots.…”

Section: Raman Spectroscopymentioning

confidence: 99%

“…Raman spectra of C-dots usually present two main first-order bands [3,27,32,41,88,129,[144][145][146][147][148][149]. The D band represents the vibrations of carbon atoms with dangling bonds in the termination plane of disordered graphite or glassy carbon.…”

Section: Raman Spectroscopymentioning

confidence: 99%

“…A common way to estimate the purity (degree of disorder or graphitization) of a C-dots sample is the ratio of the intensities of the disordered D band and crystalline G band (D/G). The C-dots sample with amorphous [32]. (B) Raman spectra of C-dots and F-C-dots [88].…”

Section: Raman Spectroscopymentioning

confidence: 99%

“…However, some of these synthetic methods suffer from limitations such as time-consuming treatment process, requirement of strong acids for catalysis, high energy consumption, and complex equipment set-up. Recently, there is a considerable interest in developing labor, material, and energy efficient synthetic methods for C-dots such as carbonization of naturally available bioresources [15,19,24,26,27,[30][31][32][33][34][35][36][37], preparation with low heating temperature [38], and synthesis without external heating [39,40]. In addition, the flexibility in modification and functionalization of the C-dots surface has opened many possibilities in the incorporation of heteroatoms such as nitrogen [15,20,21,[37][38][39][40][41][42][43][44][45][46], sulfur [33,[46][47][48][49], phosphorous [39,49], and silane [50] into C-dots framework to enhance the PL properties of C-dots.…”

Section: Introductionmentioning

confidence: 99%

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Characterization and Analytical Separation of Fluorescent Carbon Nanodots

Gong

Liu

et al. 2017

Journal of Nanomaterials

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Carbon nanodots (C-dots) are recently discovered fluorescent carbon nanoparticles with typical sizes of <10 nm. The C-dots have been reported to have excellent photophysical and chemical characteristics. In recent years, the advances in the development and improvement in C-dots synthesis, characterization, and applications are burgeoning. In this review, we introduce the most commonly used techniques for the characterization of C-dots. The characterization techniques for C-dots are briefly classified, described, and illustrated with applied examples. In addition, the analytical separation methods for C-dots (including electrophoresis, chromatography, density gradient centrifugation, differential centrifugation, solvent extraction, and dialysis) are included and discussed according to their analytical characteristics. The review concludes with an outlook towards the future developments in the characterization and the analytical separation of C-dots. The comprehensive overview of the characterization and the analytical separation techniques will safeguard people to use each technique more wisely.

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Section: Raman Spectroscopymentioning

confidence: 99%

Section: Raman Spectroscopymentioning

confidence: 99%

Section: Raman Spectroscopymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Characterization and Analytical Separation of Fluorescent Carbon Nanodots

Gong

Liu

et al. 2017

Journal of Nanomaterials

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“…Zero dimensional C-dots are known for their size dependent fluorescence properties [3], bio-compatibility and high water solubility [4], chemical inertness, and low toxicity [5]. These properties of C-dots make them suitable for bio imaging [6], drug delivery [7], photo catalytic activity, and other practical applications [2].…”

Section: Introductionmentioning

confidence: 99%

Non-blinking dendritic crystals from C-dot solution

Mewada¹,

Vishwakarma²,

Patil³

et al. 2015

Carbon letters

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Bio-imaging and drug carriers for delivery have created a huge demand for crystals. Crystals are fascinating materials that have been grown for a long time but obtaining biocompatible fluorescent crystals is a challenging task. We report on the growth of fluorescent crystals using a carbon dot (C-dot) solution by a hydrothermal process. The crystallization pattern of these C-dots exhibited a unique dendritic structure having a feather-like morphology. The growth temperature and pressure were maintained at 60°C and 200 mmHg, respectively, for crystal growth. A green fluorescence (under UV light) that was observed in the C-dot solution was retained in the crystals formed from the solution. Cytotoxicity studies on Vero cells revealed the crystals to be extremely biocompatible. These fluorescent crystals are extremely well suited for biomedical and optoelectronic applications.

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2018

Carbon Dots as Theranostic Agents

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Green synthesis of biocompatible carbon dots using aqueous extract of Trapa bispinosa peel

Cited by 272 publications

References 22 publications

Characterization and Analytical Separation of Fluorescent Carbon Nanodots

Characterization and Analytical Separation of Fluorescent Carbon Nanodots

Non-blinking dendritic crystals from C-dot solution

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