Graphene quantum dots: Highly active bifunctional nanoprobes for nonenzymatic photoluminescence detection of hydroquinone

被引：50
作者：
He, Yuezhen
Sun, Jian
Feng, Dexiang
Chen, Hongqi
Gao, Feng
Wang, Lun [1 ]
机构：
[1] Anhui Normal Univ, Anhui Key Lab Chemobiosensing, Wuhu 241000, Peoples R China
来源：
BIOSENSORS & BIOELECTRONICS | 2015年 / 74卷
关键词：
Graphene quantum dots; Peroxidase-mimicking catalytic activity; Photoluminescence; Hydroquinone; ENZYME HYBRID SYSTEM; PHENOLIC-COMPOUNDS; CATALYTIC-ACTIVITY; SENSOR; ELECTRODE;
D O I：
10.1016/j.bios.2015.07.006
中图分类号：
Q6 [生物物理学];
学科分类号：
071011 ;
摘要：
In this paper, a simple and sensitive photoluminescence method is developed for the hydroquinone quantitation by using graphene quantum dots which simultaneously serve as a peroxidase-mimicking catalyst and a photoluminescence indicator. In the presence of dissolved oxygen, graphene quantum dots with intrinsic peroxidase-mimicking catalytic activity can catalyze the oxidation of hydroquinone to produce p-benzoquinone, an intermediate, which can efficiently quench graphene quantum dots' photoluminescence. Based on this effect, a novel fluorescent platform is proposed for the sensing of hydroquinone, and the detection limit of 5 nM is found. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：418 / 422
页数：5
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