Enhanced voltammetric determination of dopamine using a glassy carbon electrode modified with ionic liquid-functionalized graphene and carbon dots

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室

	Enhanced voltammetric determination of dopamine using a glassy carbon electrode modified with ionic liquid-functionalized graphene and carbon dots
	Zhuang, Xuming ; Wang, Haihua ; He, Tao ; Chen, Lingxin
刊名	MICROCHIMICA ACTA
	2016-12-01
卷号	183 期号:12 页码:3177-3182
关键词	Dopamine Ionic liquid Graphene Carbon dot
ISSN号	0026-3672
通讯作者	Chen, LX (reprint author), Yantai Univ, Coll Chem & Chem Engn, Yantai 264005, Peoples R China.
产权排序	[Zhuang, Xuming; Wang, Haihua; He, Tao; Chen, Lingxin] Yantai Univ, Coll Chem & Chem Engn, Yantai 264005, Peoples R China; [Chen, Lingxin] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
英文摘要	The authors describe a dopamine (DA) sensor based on a glassy carbon electrode modified with a composite film composed of carbon dots (C-dots) and graphene functionalized with an ionic liquid. The C-dots were functionalized with carboxy groups whose negative charge promotes electrostatic attraction to the protonated amino groups in DA. The presence of an imidazole cation in the IL facilitates interaction with the C-dots and DA via electrostatic interactions and pi-stacking forces. Under optimal conditions, the modified GCE display improved electrochemical response to DA compared to a bare GCE, or a GCE modified with C-dots or IL-graphene only. The oxidation current, measured best at a potential of 0.22 V (vs. Ag/AgCl) is linearly related to the DA concentration in the 0.1 to 600 mu M range, with a 30 nM detection limit at a signal-to-noise ratio of 3. Ascorbic acid does not interfere even in large excess, and the sensor is stable for at least a month. The modified GCE was applied to the determination of DA in spiked fetal bovine serum and gave satisfactory results.
研究领域[WOS]	Chemistry
关键词[WOS]	ELECTROCHEMICAL DETECTION ; SELECTIVE DETECTION ; OXIDE ; NANOTUBES ; COMPOSITE ; BIOSENSOR ; COMPLEX ; ACID
收录类别	SCI
语种	英语
WOS记录号	WOS:000389194500011
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/19268]
专题	烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
作者单位	1.Yantai Univ, Coll Chem & Chem Engn, Yantai 264005, Peoples R China 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China 3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
推荐引用方式 GB/T 7714	Zhuang, Xuming,Wang, Haihua,He, Tao,et al. Enhanced voltammetric determination of dopamine using a glassy carbon electrode modified with ionic liquid-functionalized graphene and carbon dots[J]. MICROCHIMICA ACTA,2016,183(12):3177-3182.
APA	Zhuang, Xuming,Wang, Haihua,He, Tao,&Chen, Lingxin.(2016).Enhanced voltammetric determination of dopamine using a glassy carbon electrode modified with ionic liquid-functionalized graphene and carbon dots.MICROCHIMICA ACTA,183(12),3177-3182.
MLA	Zhuang, Xuming,et al."Enhanced voltammetric determination of dopamine using a glassy carbon electrode modified with ionic liquid-functionalized graphene and carbon dots".MICROCHIMICA ACTA 183.12(2016):3177-3182.