Nitrogen doped waste tea residue derived carbon dots for selective quantification of tetracycline in urine and pharmaceutical samples and yeast cell imaging application

Gunjal, Datta B.; Gurav, Yogesh M.; Gore, Anil H.; Naik, Vaibhav M.; Waghmare, Ravindra D.; Patil, Chandrashekhar S.; Sohn, Daewon; Anbhule, Prashant V.; Shejwal, Rajendra V.; Kolekar, Govind B.

doi:10.1016/j.optmat.2019.109484

Cited by 65 publications

(38 citation statements)

References 32 publications

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“…Several plant part-derived CDs have different highest emission wavelengths under a 350 nm excitation wavelength. The maximum emission wavelength of CDs from waste tea residue at 430 nm appeared by excitation at 310 nm with a QY of 2.47% [91]. The emission spectra closely correlated to the excitation wavelengths of 300-350 nm, with an emission shift, showing excitation-dependent emission behavior.…”

Section: Fluorescence and Quantum Yieldmentioning

confidence: 70%

“…The FL could be tuned by surface modification with amines. Gunjal et al also prepared N-CDs derived from waste tea residue [91]. Waste tea residue powder was dried after being obtained at ambient temperature to maintain other carbonaceous materials such as sugar and milk and crushed into powder.…”

Section: Chemical Oxidationmentioning

confidence: 99%

Section: Uv-vis Absorbance and Emission Colormentioning

confidence: 99%

“…The coconut water-derived CDs [81] exhibited a high absorbance peak at 290 nm with a tail expanding to the visible area associated with the existence of aromatic π orbitals due to the forming of graphitic carbon structure [104]. Meanwhile, the UV-vis absorbance of CDs derived from mushroom [50] and waste tea residue [91] exhibited a peak at 285 and 302 nm, respectively, correlating to C=O bonds with an n-π* transition [105]. Papaya flesh CDs showed maximum absorption at wavelengths ranging from 250 to 290 nm, correlating to the existence of an aromatic π orbital or n-π* transition [106].…”

Section: Uv-vis Absorbance and Emission Colormentioning

confidence: 99%

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Plant Part-Derived Carbon Dots for Biosensing

et al. 2020

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Carbon dots (CDs) are a new cluster of carbon atoms with particle size less than 10 nm. CDs also exhibit interesting fluorescence (FL) properties. CDs are attractive because of their fascinating characteristics including low toxicity, good water solubility, and tremendous biocompatibility. Recently, CDs have been investigated as biosensors for numerous target analytes. Meanwhile, the utilization of cheap and renewable natural resources not only fulfills the pressing requirement for the large-scale synthesis of CDs but also encourages the establishment of sustainable applications. The preparation of CDs using natural resources, i.e., plants, offers several advantages as it is inexpensive, eco-friendly, and highly available in the surroundings. Plant parts are readily available natural resources as the starting materials to produce CDs with different characteristics and attractive applications. Several review articles are now available covering the synthesis, properties, and applications of CDs. However, there is no specific and focused review literature discussing plant part-derived CDs for biosensing applications. To handle this gap, we provide a review of the progress of CDs derived from various plant parts with their synthesis methods, optical properties, and biosensing applications in the last five years. We highlight the synthesis methods and then give an overview of their optical properties and applications as biosensors for various biomolecules and molecules in biological samples. Finally, we discuss some future perspectives for plant part-derived CDs for better material development and applications.

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Section: Fluorescence and Quantum Yieldmentioning

confidence: 70%

Section: Chemical Oxidationmentioning

confidence: 99%

Section: Uv-vis Absorbance and Emission Colormentioning

confidence: 99%

Section: Uv-vis Absorbance and Emission Colormentioning

confidence: 99%

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Plant Part-Derived Carbon Dots for Biosensing

et al. 2020

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“…The synthesis of carbon dots can be generally divided into top-down and bottom-up methods [ 6 ]. The top-down approach includes laser irradiation, electrochemical synthesis and chemical oxidation [ 7 , 8 , 9 ]. The bottom-up process consists of a hydrothermal method, a microwave method and an ultrasonic method [ 10 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Fluorescent Carbon Dots and Their Application in Ascorbic Acid Detection

et al. 2021

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Water-soluble fluorescent carbon dots (CDs) were synthesized by a hydrothermal method using citric acid as the carbon source and ethylenediamine as the nitrogen source. The repeated and scale-up synthetic experiments were carried out to explore the feasibility of macroscopic preparation of CDs. The CDs/Fe3+ composite was prepared by the interaction of the CDs solution and Fe3+ solution. The optical properties, pH dependence and stability behavior of CDs or the CDs/Fe3+ composite were studied by ultraviolet spectroscopy and fluorescence spectroscopy. Following the principles of fluorescence quenching after the addition of Fe3+ and then the fluorescence recovery after the addition of asorbic acid, the fluorescence intensity of the carbon dots was measured at λex = 360 nm, λem = 460 nm. The content of ascorbic acid was calculated by quantitative analysis of the changing fluorescence intensity. The CDs/Fe3+ composite was applied to the determination of different active molecules, and it was found that the composite had specific recognition of ascorbic acid and showed an excellent linear relationship in 5.0–350.0 μmol·L−1. Moreover, the detection limit was 3.11 μmol·L−1. Satisfactory results were achieved when the method was applied to the ascorbic acid determination in jujube fruit. The fluorescent carbon dots composites prepared in this study may have broad application prospects in a rapid, sensitive and trace determination of ascorbic acid content during food processing.

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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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Nitrogen doped waste tea residue derived carbon dots for selective quantification of tetracycline in urine and pharmaceutical samples and yeast cell imaging application

Cited by 65 publications

References 32 publications

Plant Part-Derived Carbon Dots for Biosensing

Plant Part-Derived Carbon Dots for Biosensing

Synthesis of Fluorescent Carbon Dots and Their Application in Ascorbic Acid Detection

Carbon Dots: Emerging Green Nanoprobes and Their Diverse Applications

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