Graphene nanosheets-supported Ag nanoparticles for ultrasensitive detection of TNT by surface-enhanced Raman spectroscopy

	Graphene nanosheets-supported Ag nanoparticles for ultrasensitive detection of TNT by surface-enhanced Raman spectroscopy
	Liu MM ; Chen W
刊名	biosensors & bioelectronics
	2013
卷号	46 页码:68-73
关键词	P-AMINOTHIOPHENOL TRANSITION-METALS CHEMICAL SENSORS AU NANOPARTICLES ROOM-TEMPERATURE SCATTERING SILVER EXPLOSIVES TRINITROTOLUENE SUBSTRATE
ISSN号	0956-5663
通讯作者	chen w
中文摘要	sensitive and selective detection of 2,4,6-trinitrotoluene (tnt) has attracted considerable attention due to the wide applications of tnt as explosive material. many efforts have been made to develop various sensors for detecting tnt in recent years. we herein report a novel sensor based on p-aminothiophenol (patp) functionalized silver nanoparticles supported on graphene nanosheets (ag/gns), which was found to be a kind of effective chemosensor for the ultratrace detection of tnt by using surface enhanced raman scattering (sers). in the present hybrid material, patp is paired together to form a corresponding azo compound p, p'-dimercaptoazobenzene (dmab) and thus can be used as a model raman probe. the pi-donor-acceptor interaction between pi-acceptor tnt and pi-donor dmab-ag/gns complex can effectively induce the "hot spots" for sers. the intense spectral resonance from the dmab-tnt-dmab bridges formed between the ag/gns nanosheets could result in enhanced raman signals of dmab molecules with the presence of ultratrace tnt. sers measurements demonstrated that tnt with concentration as low as 10(-11) m can be detected by using the present sers platform. the present study not only provides a facile method for ultrasensitive and selective detection of tnt but also could develop a graphene-based sers platform. (c) 2013 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:000318325200011
公开日期	2014-04-15
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/49677]
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	Liu MM,Chen W. Graphene nanosheets-supported Ag nanoparticles for ultrasensitive detection of TNT by surface-enhanced Raman spectroscopy[J]. biosensors & bioelectronics,2013,46:68-73.
APA	Liu MM,&Chen W.(2013).Graphene nanosheets-supported Ag nanoparticles for ultrasensitive detection of TNT by surface-enhanced Raman spectroscopy.biosensors & bioelectronics,46,68-73.
MLA	Liu MM,et al."Graphene nanosheets-supported Ag nanoparticles for ultrasensitive detection of TNT by surface-enhanced Raman spectroscopy".biosensors & bioelectronics 46(2013):68-73.