Fabrication of Large-Area Self-Organizing Gold Nanostructures with Sub-10 nm Gaps on a Porous Al2O3 Template for Application as a SERS-Substrate

被引：42

作者：

Nielsen, Peter ^{[1
]}

Hassing, Soren ^{[1
]}

Albrektsen, Ole ^{[1
]}

Foghmoes, Soren ^{[2
]}

Morgen, Per ^{[2
]}

机构：

[1] Univ So Denmark, Inst Sensors Signals & Electrotech SENSE, Fac Engn, DK-5230 Odense M, Denmark

[2] Univ So Denmark, Inst Chem & Phys, Fac Sci, DK-5230 Odense M, Denmark

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 32期

关键词：

ENHANCED RAMAN-SCATTERING; SILVER; NANOPARTICLES; MEMBRANES; MOLECULES; PYRIDINE; SPECTRA;

D O I：

10.1021/jp9039012

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A new technique for fabrication of large-area self-organizing variably ordered gold nanostructures with sub-10 nm gaps oil templates of hexagonally ordered porous anodic aluminum oxide is demonstrated. The size as well as the interparticle distance of the fabricated gold nanostructures are adjusted by application of various electrolytes used in anodization of the aluminum template and the thickness of gold sputter-coated on the pore layer. The fabricated substrates are characterized by SEM and optical extinction measurements in reflection. The applicability as SERS substrates is investigated by adsorption of rhodamine 6G on the nanostructures. These substrates are found to exhibit high and uniform enhancement of the Raman signal across the entire surface. The nanostructures can be utilized as low-cost SERS-active substrates that within a short time can be fabricated reproducibly in large amounts.

引用

页码：14165 / 14171

页数：7