期刊
NANOSCALE
卷 7, 期 17, 页码 8159-8165出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5nr01519g
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资金
- Ministry of Education of Singapore [MOE2014-T2-2-003, ARC31/14]
- Singapore National Research Foundation under its CBRG [NMRC/CBRG/0070/2014]
- Agency for Science, Technology and Research under its SERC [1021700137]
Graphene quantum dots (GQDs) are emerging zero-dimensional materials promising a wide spectrum of applications, particularly, as superior fluorescent reporters for bio-imaging and optical sensing. Heteroatom doping can endow GQDs with new or improved photoluminescence properties. Here, we demonstrate a simple strategy for the synthesis of nitrogen and phosphorus co-doped GQDs from a single biomolecule precursor (adenosine triphosphate - ATP). Such ATP-GQDs exhibit high fluorescence quantum yield, strong two-photon upconversion, small molecular weight, high photostability, and good biocompatibility. Furthermore, transferrin conjugated ATP-GQDs have been used for imaging and real-time tracking of transferrin receptors in live cells.
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