Facile Fabrication of Two-Dimensionally Ordered Macroporous Silver Thin Films and Their Application in Molecular Sensing

doi:10.1002/adfm.201001177

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	Facile Fabrication of Two-Dimensionally Ordered Macroporous Silver Thin Films and Their Application in Molecular Sensing
	Hong, Guosong; Li, Cheng; Qi, Limin
刊名	ADVANCED FUNCTIONAL MATERIALS
	2010-11-09
卷号	20 期号:21 页码:3774-3783
ISSN号	1616-301X
DOI	10.1002/adfm.201001177
英文摘要	Large-area, freestanding, two-dimensionally ordered macroporous (2DOM) Ag thin films with adjustable periodic spacings and good mechanical robustness were fabricated via nanosphere lithography at the solution surface (NSLSS) combined with interfacial reactions. The obtained 2DOM Ag thin films exhibited typical properties of plasmonic crystals with well-resolved reflectivity dips and vivid colors. The facile NSLSS method enabled the 2DOM Ag thin films to be readily transferred to arbitrary substrates to realize application as thin film sensors. Their application as both a surface plasmon resonance (SPR) sensor and a surface-enhanced Raman scattering (SERS) sensor in the detection of both small molecules and biological macromolecules were explored. As SERS substrates for the detection of 4-aminothiophenol (4-ATP) molecules, the 2DOM Ag thin films showed enhancement factors as high as the 10(7) order, which made them a promising sensor for the detection of trace amount of analyte adsorbed on the surface. As SPR sensors, the 2DOM Ag thin films modified with a self-assembled monolayer of recognizing molecules as binding sites showed remarkable shift in the reflectivity dips responsive to the chemical environments. When used for the specific detection of avidin molecules, the 2DOM Ag thin film biosensors exhibited excellent performance with low detection limit (approximate to 100 pM) and broad working range (100 pM-200 nM), indicating that they may be a promising candidate for high-performance biosensors.
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000283999900020
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/71167]
专题	中国科学院化学研究所
通讯作者	Hong, Guosong
作者单位	Peking Univ, BNLMS, State Key Lab Struct Chem Unstable & Stable Speci, Coll Chem, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Hong, Guosong,Li, Cheng,Qi, Limin. Facile Fabrication of Two-Dimensionally Ordered Macroporous Silver Thin Films and Their Application in Molecular Sensing[J]. ADVANCED FUNCTIONAL MATERIALS,2010,20(21):3774-3783.
APA	Hong, Guosong,Li, Cheng,&Qi, Limin.(2010).Facile Fabrication of Two-Dimensionally Ordered Macroporous Silver Thin Films and Their Application in Molecular Sensing.ADVANCED FUNCTIONAL MATERIALS,20(21),3774-3783.
MLA	Hong, Guosong,et al."Facile Fabrication of Two-Dimensionally Ordered Macroporous Silver Thin Films and Their Application in Molecular Sensing".ADVANCED FUNCTIONAL MATERIALS 20.21(2010):3774-3783.