Multicolor fluorescent graphene quantum dots colorimetrically responsive to all-pH and a wide temperature range
Nanoscale, ISSN: 2040-3372, Vol: 7, Issue: 27, Page: 11727-11733
2015
- 198Citations
- 105Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Metrics Details
- Citations198
- Citation Indexes198
- 198
- CrossRef187
- Captures105
- Readers105
- 105
Article Description
Smart functional nanomaterials colorimetrically responsive to all-pH and a wide temperature range are urgently needed due to their widespread applications in biotechnology, drug delivery, diagnosis and optical sensing. Although graphene quantum dots possess remarkable advantages in biological applications, they are only stable in neutral or weak acidic solutions, and strong acidic or alkaline conditions invariably suppress or diminish the fluorescence intensity. Herein, we report a new type of water-soluble, multicolor fluorescent graphene quantum dot which is responsive to all-pH from 1 to 14 with the naked eye. The synthesis was accomplished by electrolysis of the graphite rod, followed by refluxing in a concentrated nitric and sulfuric acid mixed solution. We demonstrate the novel red fluorescence of quinone structures transformed from the lactone structures under strong alkaline conditions. The fluorescence of the resulting graphene quantum dots was also found to be responsive to the temperature changes, demonstrating their great potential as a dual probe of pH and temperature in complicated environments such as biological media.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84942930994&origin=inward; http://dx.doi.org/10.1039/c5nr02007g; http://www.ncbi.nlm.nih.gov/pubmed/26102292; http://xlink.rsc.org/?DOI=C5NR02007G; http://pubs.rsc.org/en/content/articlepdf/2015/NR/C5NR02007G; https://xlink.rsc.org/?DOI=C5NR02007G; https://dx.doi.org/10.1039/c5nr02007g; https://pubs.rsc.org/en/content/articlelanding/2015/nr/c5nr02007g
Royal Society of Chemistry (RSC)
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