Optical nonlinearities and optical limiting properties in gold nanoparticles protected by ligands

被引：83

作者：

Qu, SL

Du, CM

Song, YL ^{[1
]}

Wang, YX

Gao, YC

Liu, ST

Li, YL

Zhu, DB

机构：

[1] Harbin Inst Technol, Dept Phys, Harbin 150001, Peoples R China

[2] Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2002年 / 356卷 / 3-4期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/S0009-2614(02)00396-2

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：

Optical nonlinearities of gold nanoparticles protected by ligands have been investigated by Z-scan technique. Absorptive and refractive optical limiting (OL) effects have been measured with 8 ns duration laser pulses at 532 nm. Significant differences have been found experimentally for these two nanoparticles that differ only by their ligands. Such differences indicate that nonlinear optical responses in two nanocomposites are strongly influenced by the surface plasmon resonance of gold nanoparticles and also the nature of ligands. Both of these two nanocomposites show stronger refractive optical limiting effects than C-60 in toluene. (C) 2002 Published by Elsevier Science B.V.

引用

页码：403 / 408

页数：6

共 23 条

[1] The self-assembly of [60] fullerene-substituted 2,2′-bipyridine on the surface of Au(111) and Au nanoparticles [J].