Chemiluminescence of graphene quantum dots and its application to the determination of uric acid

被引：102

作者：

Amjadi, Mohammad ^{[1
]}

Manzoori, Jamshid L. ^{[1
]}

Hallaj, Tooba ^{[1
]}

机构：

[1] Univ Tabriz, Fac Chem, Dept Analyt Chem, Tabriz 5166616471, Iran

来源：

JOURNAL OF LUMINESCENCE | 2014年 / 153卷

关键词：

Graphene quantum dots; Chemiluminescence; Uric acid; Nanomaterial; RESONANCE ENERGY-TRANSFER; FLUORESCENT CARBON DOTS; FLOW-INJECTION ANALYSIS; HUMAN SERUM; METAL-IONS; SYSTEM; NANOMATERIAL; ENHANCEMENT; ACCEPTORS; OXIDATION;

D O I：

10.1016/j.jlumin.2014.03.020

中图分类号：

O43 [光学];

学科分类号：

070207 [光学];

摘要：

We report on the chemiluminescence (CL) of graphene quantum dots (GQDs) induced by direct chemical oxidation. GQDs were prepared by a simple carbonization method and characterized by X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy and Raman spectroscopy. It was found that Ce(IV) could oxidize GQDs to produce a relatively intense CL emission. The mechanism of CL generation was investigated based on the fluorescence and CL emission spectra. It was attributed to the radiative recombination of oxidant-injected holes and thermally excited electrons in the GQDs. In order to show the analytical application potential of GQDs-Ce(IV) CL system, it was applied to the determination of uric acid. Under the optimized conditions, the proposed CL system exhibited excellent analytical performance for determination of uric acid in the range of 1.0 x 10(-6) M-5.0 x 10(-4) M with a limit of detection of 5.0 x 10(-7) M. The method was applied to the determination of uric acid in human plasma and urine samples, with satisfactory results. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：73 / 78

页数：6

共 47 条

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