One step, high yield synthesis of amphiphilic carbon quantum dots derived from chia seeds: a solvatochromic study

Jones, S S and Sahatiya, Parikshit and Badhulika, Sushmee (2017) One step, high yield synthesis of amphiphilic carbon quantum dots derived from chia seeds: a solvatochromic study. New Journal of Chemistry, 41 (21). pp. 13130-13139. ISSN 1144-0546

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Abstract

In this work, we demonstrate the high-yield synthesis of carbon quantum dots using a one-step low-cost thermal treatment of a renewable biomass, i.e. natural chia seeds. The synthesized carbon dots (C-dot) exhibited tunable photoluminescence with high quantum yield in the range of 4–25% for various solvents. The physicochemical characterization revealed that the synthesized carbon quantum dots were amorphous in nature with their sizes ranging from 2–6 nm. The synthesized carbon dots could be further extracted up to five times from the same pyrolized product using a facile route, which has endowed the synthesis with high yield. Moreover, the rationale behind the multicolor fluorescence emission due to solvation effects was studied systematically using photoluminescence spectra (PL) and the origin of PL shifts of the carbon dots in different solvents was discussed in regard to the contribution from hydrogen bonding and dipole–dipole interactions. The presented study aims at developing a green approach, which could be readily adapted for the scalable production of carbon dots capable of long-range emission for utilization in bio imaging, photothermal therapy and multifunctional sensing systems.

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IITH Creators:
IITH CreatorsORCiD
Badhulika, SushmeeUNSPECIFIED
Item Type: Article
Uncontrolled Keywords: LARGE-SCALE SYNTHESIS; LABEL-FREE DETECTION; COLOR EMISSION; DRUG-DELIVERY; IN-VIVO; NANODOTS; PHOTOLUMINESCENCE; LUMINESCENT; NANOPARTICLES; FLUORESCENCE
Subjects: Electrical Engineering
Electrical Engineering > Instruments and Instrumentation
Divisions: Department of Electrical Engineering
Depositing User: Library Staff
Date Deposited: 16 Nov 2017 03:52
Last Modified: 16 Nov 2017 03:54
URI: http://raiith.iith.ac.in/id/eprint/3667
Publisher URL: https://doi.org/10.1039/C7NJ03513F
OA policy: http://www.sherpa.ac.uk/romeo/issn/1144-0546/
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