HREELS studies of gold nanoparticles with dialkyl sulphide ligands

被引：13

作者：

Chen, Y ^{[1
]}

Palmer, RE

Shelley, EJ

Preece, JA

机构：

[1] Univ Birmingham, Sch Phys & Astron, Nanoscale Phys Res Lab, Birmingham B15 2TT, W Midlands, England

[2] Univ Birmingham, Sch Chem Sci, Birmingham B15 2TT, W Midlands, England

来源：

SURFACE SCIENCE | 2002年 / 502卷

关键词：

electron energy loss spectroscopy (EELS); electron bombardment; radiation damage; clusters; sulphides;

D O I：

10.1016/S0039-6028(01)01934-3

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：

We have employed high resolution electron energy loss spectroscopy (HREELS) to study low energy electron impact on films of gold nanoparticles passivated with dialkyl sulphide (H21C10SC10H21). HREEL spectra obtained in UHV show energy loss peaks due to CHx and CC vibrational modes of the organic ligands together with a mode at 230 cm(-1) assigned to the Au-S stretch. Measurements as a function of impact energy reveal resonances in the intensities centred between 9 and 12 eV. Prolonged exposure of the film to an electron beam at 50 eV, with a dosage of approximately 360 muC cm(-2) causes significant changes in the HREEL spectra. consistent with cleavage of the Au-S bond. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：208 / 213

页数：6

共 44 条

[31] Interaction of passivated clusters in solution with micro-patterned surfaces: guided flow versus defect pinning [J].