STABLE SERS SUBSTRATES USED FOR IN-SITU STUDIES OF THE POLYMER-METAL INTERFACE AT ELEVATED-TEMPERATURE

被引：17

作者：

XUE, G ^{[1
]}

LU, Y ^{[1
]}

ZHANG, JF ^{[1
]}

机构：

[1] NANJING UNIV, STATE KEY LAB COORDINAT CHEM, NANJING 210008, PEOPLES R CHINA

来源：

MACROMOLECULES | 1994年 / 27卷 / 03期

关键词：

D O I：

10.1021/ma00081a028

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Thermally stable SERS substrates for Raman study of the polymer-metal interface were prepared by etching metal foils with HNO3. These foils were demonstrated to exhibit a better surface-enhanced Raman scattering (SERS) effect and higher stability at elevated temperature than a vacuum-deposited Ag/CaF2 substrate. SERS spectra of poly(benzimidazole) and poly(acrylonitrile) have been obtained to illustrate the usefulness of this sample preparation method in the interfacial structure. The order of Raman enhancement effect for different metal substrates was arranged is HNO3-etched Ag > HNO3-etched Cu > Ag/CaF2 at elevated temperature. Comparison of SERS with normal Raman and IR diffuse reflectance spectra for coatings on a roughened metal surface indicates that SERS is highly informative in that the interfacial microstructure can be revealed with much less interference from the polymer bulk.

引用

页码：809 / 813

页数：5

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