Acid-directed synthesis of SERS-active hierarchical assemblies of silver nanostructures

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	Acid-directed synthesis of SERS-active hierarchical assemblies of silver nanostructures
	Zhang, B ; Xu, P ; Xie, XM ; Wei, H ; Li, ZP ; Mack, NH ; Han, XJ ; Xu, HX ; Wang, HL
刊名	JOURNAL OF MATERIALS CHEMISTRY
	2011
卷号	21 期号:8 页码:2495
关键词	ENHANCED RAMAN-SCATTERING GOLD-NANOPARTICLE DIMERS CHEMICAL-DEPOSITION FACILE SYNTHESIS CATALYTIC-PROPERTIES HOT-SPOTS NANOCRYSTALS POLARIZATION MOLECULES DNA
ISSN号	0959-9428
通讯作者	Xu, P: Harbin Inst Technol, Dept Chem, Harbin 150001, Peoples R China.
中文摘要	SERS-active silver hierarchical assemblies are synthesized in solution by the assistance of small acid molecules. We here demonstrate the acid-directed self-assembly of metal nanoparticles (MNPs) into large systems with complex structures, without the application of any polymer surfactant or capping agent. It is verified that small acid molecules (citric acid, mandelic acid, etc.) incorporated into conventional solution chemistry can direct the assembly of MNPs into well-defined hierarchical structures. The constructed assembled structures with highly roughened surfaces can be highly sensitive SERS platforms, and the fabricated core-shell Ag wires show especially high SERS sensitivity toward the analyte melamine. The prepared Ag particles with hierarchical structures show no evident polarization-dependent SERS behavior, and this isotropic feature may be an advantage for highly sensitive SERS tags, since no certain incident polarization is required for molecule detection. We believe the subsequent addition of acid to induce formation of self-assembled structures can be a general synthetic platform to fabricate metal structures with complex morphologies.
收录类别	SCI
资助信息	Laboratory Directed Research and Development (LDRD) under DOE; BES Office of Science; National Nanotechnology Enterprise Development Center (NNEDC); U.S. Department of Energy, Center for Integrated Nanotechnologies, at Los Alamos National Laboratory [DE-AC52-06NA25396]; Sandia National Laboratories [DE-AC04-94AL85000]; Chinese Scholarship Council (CSC); NSFC [20776032, 21071037, 10625418, 10874233]; Special Fund of Harbin Technological Innovation [2010RFXXG012]; MOST [2007CB936800, 2009CB930700]
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/33464]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Zhang, B,Xu, P,Xie, XM,et al. Acid-directed synthesis of SERS-active hierarchical assemblies of silver nanostructures[J]. JOURNAL OF MATERIALS CHEMISTRY,2011,21(8):2495.
APA	Zhang, B.,Xu, P.,Xie, XM.,Wei, H.,Li, ZP.,...&Wang, HL.(2011).Acid-directed synthesis of SERS-active hierarchical assemblies of silver nanostructures.JOURNAL OF MATERIALS CHEMISTRY,21(8),2495.
MLA	Zhang, B,et al."Acid-directed synthesis of SERS-active hierarchical assemblies of silver nanostructures".JOURNAL OF MATERIALS CHEMISTRY 21.8(2011):2495.