Facile Synthesis of Functional Graphene Quantum Dots and Their Application to Cu(II) Ion Sensing

Functional graphene quantum dots (IL-GQDs) are synthesized by electrochemical exfoliation in a one-pot process. Ionic liquid in the mixed solution (water/acetonitrile) is used as the electrolyte, which can be bonded to the surface of GQDs. The method just needs a very low concentration of ionic liqu...

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Veröffentlicht in:	Chemistry letters 2019-01, Vol.48 (4), p.309
Hauptverfasser:	Wang, Jingwei, Zheng, Yongji, Teng, Qiaoqiao, Wu, Datong
Format:	Artikel
Sprache:	eng ; fre ; ger ; jpn
Schlagworte:	Acetonitrile Emission spectra Fluorescence Graphene Ionic liquids Ions Quantum dots
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creator	Wang, Jingwei Zheng, Yongji Teng, Qiaoqiao Wu, Datong
description	Functional graphene quantum dots (IL-GQDs) are synthesized by electrochemical exfoliation in a one-pot process. Ionic liquid in the mixed solution (water/acetonitrile) is used as the electrolyte, which can be bonded to the surface of GQDs. The method just needs a very low concentration of ionic liquid. Fluorescent spectra indicate that the maximum emission intensity is achieved at 465 nm. Further, the obtained IL-GQDs exhibit selective fluorescence quenching towards Cu(II) ion, with a detection limit of ppb level.
doi_str_mv	10.1246/cl.180967
format	Article
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source	Oxford University Press Journals All Titles (1996-Current)
subjects	Acetonitrile Emission spectra Fluorescence Graphene Ionic liquids Ions Quantum dots
title	Facile Synthesis of Functional Graphene Quantum Dots and Their Application to Cu(II) Ion Sensing
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