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Issue 21, 2017
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One step, high yield synthesis of amphiphilic carbon quantum dots derived from chia seeds: a solvatochromic study

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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.

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

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Publication details

The article was received on 15 Sep 2017, accepted on 03 Oct 2017 and first published on 03 Oct 2017


Article type: Paper
DOI: 10.1039/C7NJ03513F
Citation: New J. Chem., 2017,41, 13130-13139
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    One step, high yield synthesis of amphiphilic carbon quantum dots derived from chia seeds: a solvatochromic study

    S. S. Jones, P. Sahatiya and S. Badhulika, New J. Chem., 2017, 41, 13130
    DOI: 10.1039/C7NJ03513F

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