Journal
RSC ADVANCES
Volume 6, Issue 44, Pages 37319-37329Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra04030f
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Funding
- CSIR, New Delhi
- DST, New Delhi under the DISHA scheme [DST/DISHA/SoRF-PM/024/2013]
- DST
- DST New Delhi [SB/EMEQ-383/2014]
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The traditional pyrolysis of vegetable ghee leads to the fabrication of graphitic photoluminescent, water soluble carbon nano-onions (wsCNO) with tunable photoluminescence without using any metal catalyst. Simple oxidative treatment by nitric acid fabricated a high density self-passivated water soluble version. As-synthesized wsCNO possessed tunable photoluminescence behavior from the visible-to-near infrared region. Further small sized wsCNO separated from the bulk as-synthesized wsCNO via gel filtration achieved a highly fluorescent colored fraction, used for cell imaging (Escherichia coli and Pseudomonas putida) and selective, immediate sensing of glucose molecules based upon a simple fluorescence turn-off/turn-on technique.
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