An electrochemical aptasensor for chiral peptide detection using layer-by-layer assembly of polyelectrolyte-methylene blue/polyelectrolyte-graphene multilayer

	An electrochemical aptasensor for chiral peptide detection using layer-by-layer assembly of polyelectrolyte-methylene blue/polyelectrolyte-graphene multilayer
	Qin HX ; Liu JY ; Chen CG ; Wang JH ; Wang EK
刊名	analytica chimica acta
	2012
卷号	712 页码:127-131
关键词	MASS-SPECTROMETRY INTERFERON-GAMMA ULTRATHIN FILMS APTAMER BIOSENSOR VASOPRESSIN ELECTRODES PROTEINS MATRICES
ISSN号	0003-2670
通讯作者	wang jh
中文摘要	here we demonstrate for the first time that by physically adsorbing aptamer onto conductive film assembled via alternate adsorption of graphene/polyelectrolyte and methylene blue/polyelectrolyte, a label-free electrochemical aptasensor with high sensitivity and selectivity for peptide detection is constructed. graphene multilayer derived from layer-by-layer assembly has played significant roles in this sensing strategy: allowing accumulation of methylene blue, facilitating electron transfer and providing much more adsorption site. as compared to previous electrochemical aptasensors, the current sensor based on graphene multilayer alternated with electroactive molecule layer offers extremely high capability for sensitive detection of target without interference of environmental surrounding. this electroactive probe-confined graphene multilayer confers great flexibility to combine with differential pulse voltammetry (dpv) together. in the presence of target d entiomer of arginine vasopressin (d-vp), the binding of peptide to aptamer block the electron transfer process of mb, leading to decreased current peak of dpv. by this way, this electrochemical aptasensor based on electroactive molecule-intercalated graphene multilayer provide highly sensitive and specific detection of d-vp with the lowest detectable concentration of 1 ng ml(-1) and a wide detection range from 1 to 265 ng ml(-1). (c) 2011 elsevier b.v. all rights reserved.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000300764700016
公开日期	2013-06-08
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/48370]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Qin HX,Liu JY,Chen CG,et al. An electrochemical aptasensor for chiral peptide detection using layer-by-layer assembly of polyelectrolyte-methylene blue/polyelectrolyte-graphene multilayer[J]. analytica chimica acta,2012,712:127-131.
APA	Qin HX,Liu JY,Chen CG,Wang JH,&Wang EK.(2012).An electrochemical aptasensor for chiral peptide detection using layer-by-layer assembly of polyelectrolyte-methylene blue/polyelectrolyte-graphene multilayer.analytica chimica acta,712,127-131.
MLA	Qin HX,et al."An electrochemical aptasensor for chiral peptide detection using layer-by-layer assembly of polyelectrolyte-methylene blue/polyelectrolyte-graphene multilayer".analytica chimica acta 712(2012):127-131.