Distance dependence of surface enhanced Raman scattering probed by alkanethiol self-assembled monolayers

被引：55

作者：

Compagnini, G ^{[1
]}

Galati, C ^{[1
]}

Pignataro, S ^{[1
]}

机构：

[1] Univ Catania, Dipartimento Sci Chim, I-95125 Catania, Italy

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 1999年 / 1卷 / 09期

关键词：

D O I：

10.1039/a901034c

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 distance dependence study of the surface enhanced Raman effect has been performed using alkanethiol CH3(CH2)(n)SH self-assembled monolayers on top of rough silver surfaces. We found a decrease of the enhancement signal of the CH3 heads by a factor of 2, increasing the CH3-surface distance from 0.8 to 2.5 nm (n = 5-17) and a distance function compatible with the known Gersten and Nitzan theory on the electromagnetic enhancement. Parameters obtained by an experimental data fit agree with previous observations on silver surface morphology.

引用

收藏

页码：2351 / 2353

页数：3

相关论文

共 15 条

[1] SURFACE RAMAN-SCATTERING OF SELF-ASSEMBLED MONOLAYERS FORMED FROM 1-ALKANETHIOLS AT AG [J].

BRYANT, MA ;

PEMBERTON, JE .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1991, 113 (10) :3629-3637

[2] Nanomorphology and SERS activity in plasma prepared silver surfaces [J].

Compagnini, G ;

Pignataro, B ;

Pelligra, B .

CHEMICAL PHYSICS LETTERS, 1997, 272 (5-6) :453-458

[3] ELECTROMAGNETIC THEORY OF ENHANCED RAMAN-SCATTERING BY MOLECULES ADSORBED ON ROUGH SURFACES [J].

GERSTEN, J ;

NITZAN, A .

JOURNAL OF CHEMICAL PHYSICS, 1980, 73 (07) :3023-3037

[4] Structure and mechanism of photooxidation of self-assembled monolayers of alkylthiols on silver studied by XPS and static SIMS [J].

Hutt, DA ;

Cooper, E ;

Leggett, GJ .

JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (01) :174-184

[5] Self-assembled n-alkanethiolate monolayers on underpotentially deposited adlayers of silver and copper on gold [J].

Jennings, GK ;

Laibinis, PE .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1997, 119 (22) :5208-5214

[6]

MOSCOVITS M, 1985, REV MOD PHYS, V57, P783

[7] QUANTITATIVE SEPARATION OF THE CLASSICAL ELECTROMAGNETIC AND THE CHEMICAL CONTRIBUTION TO SURFACE ENHANCED RAMAN-SCATTERING [J].

MROZEK, I ;

OTTO, A .

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 1990, 54 :895-911

[8]

MunizMiranda M, 1996, J RAMAN SPECTROSC, V27, P435, DOI 10.1002/(SICI)1097-4555(199605)27:5<435::AID-JRS990>3.0.CO

[9]

2-0

[10] ADSORPTION OF BIFUNCTIONAL ORGANIC DISULFIDES ON GOLD SURFACES [J].

NUZZO, RG ;

ALLARA, DL .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1983, 105 (13) :4481-4483