Optical enhancing properties in layer-by-layer films of dendrimer and gold nanoparticles

被引：6

作者：

dos Santos, David S., Jr.

Sanfelice, Rafaela C.

Alvarez-Puebla, Ramon

Oliveira, Osvaldo N., Jr.

Aroca, Ricardo F. ^{[1
]}

机构：

[1] Univ Windsor, Dept Chem & Biochem, Mat & Surface Sci Grp, Windsor, ON N9B 3P4, Canada

[2] Univ Fed Sao Carlos, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

来源：

MACROMOLECULAR SYMPOSIA | 2006年 / 245卷

关键词：

composites; dendrimer; layer-by-layer; Raman spectroscopy; SERS;

D O I：

10.1002/masy.200651344

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Portable multilayer films containing gold nanoparticles embedded in a dendrimer matrix have been fabricated using the layer-by-layer (LbL) technique, characterized and tested for applications in surface-enhanced Raman scattering (SERS). Film formation was monitored by microgravimetry measurements using a quartz crystal microbalance (QCM) and UV-visible spectroscopy. The surface morphology was investigated with atomic force microscopy (AFM) measurements. SERS was recorded for 2-Naphtalenethiol(NFT) cast onto the LbL film and the results show that the optical enhancing ability is a function of the number of bilayers. The analytes show an increase of SERS effect that follows the surface roughness, being stabilized after a certain number of bilayers are deposited.

引用

页码：325 / 329

页数：5

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