Preparation of Surface-Enhanced Raman Scattering Substrates Based on Immobilized Silver-Capped Nanoparticles

被引：29

作者：

Caro, C. ^{[1
,2
,3
]}

Gamez, F. ^{[1
]}

Zaderenko, A. P. ^{[1
]}

机构：

[1] Univ Pablo Olavide, Dept Sistemas Fis Quim & Nat, Crta Utrera Km 1, Seville 41013, Spain

[2] Univ Nova Lisboa, Fac Ciencias & Tecnol, Dept Quim, REQUIMTE,UCIBIO, P-2829516 Caparica, Portugal

[3] Ctr Andaluz Nanomed & Biotecnol BIONAND, Calle Severo Ochoa 35, Malaga 29590, Spain

来源：

JOURNAL OF SPECTROSCOPY | 2018年 / 2018卷

关键词：

SERS; SPECTROSCOPY; FILMS; FABRICATION; CLUSTERS; NANOSTRUCTURE; TEMPERATURE; ELECTRODES; DEPENDENCE; REDUCTION;

D O I：

10.1155/2018/4127108

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Novel results concerning surface-enhanced Raman scattering mediated by thiol-immobilized capped silver nanoparticles attached to a silicon Si(100) substrate are presented. The attachment of the nanoparticles is achieved by chemically modifying the surface of Si(100) in order to provide sulfhydryl groups covalently linked to the substrate and then covering these surfaces with bare and polymer-capped silver nanoparticles. The modified silicon substrate, the nanoparticles, and the sensors are characterized by means of infrared and UV-vis spectroscopies and electronic microscopies. The surface-enhanced Raman scattering intensity of the new films based on polymer-capped nanoparticles is compared with that obtained with silver bare nanoparticles using rhodamine 6G as a common chromophore. These results open a new route to the design of reversible and spot-to-spot reproducible surface-enhanced Raman scattering-based sensors supported by silver nanoparticles.

引用

页数：9

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