Differences in single and aggregated nanoparticle plasmon spectroscopy

被引：16

作者：

Singh, Pushkar ^{[1
]}

Deckert-Gaudig, Tanja ^{[1
]}

Schneidewind, Henrik ^{[1
]}

Kirsch, Konstantin ^{[1
]}

Lantman, Evelien M. van Schrojenstein ^{[2
]}

Weckhuysen, Bert M. ^{[2
]}

Deckert, Volker ^{[1
,3
,4
]}

机构：

[1] Leibniz Inst Photon Technol, D-07745 Jena, Germany

[2] Univ Utrecht, Debye Inst Nanomat Sci, NL-3584 CG Utrecht, Netherlands

[3] Univ Jena, Inst Phys Chem, D-07743 Jena, Germany

[4] Univ Jena, Abbe Ctr Photon, D-07743 Jena, Germany

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2015年 / 17卷 / 05期

基金：

欧洲研究理事会;

关键词：

TIP-ENHANCED RAMAN; MOLECULE DETECTION; BINARY-MIXTURES; SURFACE; SILVER; SCATTERING; GOLD;

D O I：

10.1039/c4cp04850d

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：

Vibrational spectroscopy usually provides structural information averaged over many molecules. We report a larger peak position variation and reproducibly smaller FWHM of TERS spectra compared to SERS spectra indicating that the number of molecules excited in a TERS experiment is extremely low. Thus, orientational averaging effects are suppressed and micro ensembles are investigated. This is shown for a thiophenol molecule adsorbed on Au nanoplates and nanoparticles.

引用

页码：2991 / 2995

页数：5

共 42 条

[1]

BONDAREV AF, 1973, OPT SPEKTROSK+, V35, P286

[2] RAMAN-SCATTERING FROM BINARY-MIXTURES OF VANDERWAALS LIQUIDS - THEORY OF BAND PROFILES [J].