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Roshni, V. and Misra, S. and Santra, M and Ottoor, V. (2019) One pot green synthesis of C-dots from groundnuts and its application as Cr (VI) sensor and in vitro bioimaging agent. Journal of Photochemistry and Photobiology A-Chemistry, 373 (15). pp. 28-36.

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The emergence of fluorescent carbon dots (C-dots) has received special attention due to their distinct characteristics which are advantageous for optical sensing and bioimaging applications. Cr(VI) is considered a hazardous environmental pollutant hence requires a simple and effective method for its detection and recovery. Herein, we have synthesized both C-dots and N-doped C-dots from ground nuts employing a cost-effective and green hydrothermal method. N-C-dots exhibits a remarkably enhanced quantum yield (17.6%) as compared to undoped C-dots (7.8%). In addition,the N-C-dots showed amazing selectivity towards Cr(VI) in the metal sensing application. Cr (VI) induced quenching of fluorescence was recovered using Humic acid as well as Glutathione thus exhibiting an off-on type sensing mechanism. The limit of detection (LOD) for Cr(VI) using N-C-dots was found to be 0.1 mg/L. C-dots possess comparatively low cytotoxicity than N-C-dots at higher concentration thereby making them an efficient candidate for bioimaging of MCF-7 cells

Item Type: Article
Depositing User: Mr. Rameshwar Nema
Date Deposited: 13 Feb 2020 10:52
Last Modified: 13 Feb 2020 10:52
URI: http://nccs.sciencecentral.in/id/eprint/640

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