Studies on 2D hybrid films of half surfactant-covered Au nanoparticles at the air/water interface

被引：7

作者：

Pang, S ^{[1
]}

Tetsuya, O ^{[1
]}

Tomoyuki, W ^{[1
]}

Kondo, T ^{[1
]}

Kawai, T ^{[1
]}

机构：

[1] Sci Univ Tokyo, Dept Ind Chem, Fac Engn, Shinjuku Ku, Tokyo, Japan

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2005年 / 285卷 / 02期

关键词：

hybrid monolayer; TEM; QCM; FTIR; DODAC; gold nanoparticles;

D O I：

10.1016/j.jcis.2004.11.071

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 hybrid monolayer film of Au nanoparticles, half-covered with dioctadecyldimethylammonium chloride (DODAC), was prepared at the air/water interface and characterized using, transmission electron microscopy (TEM), a quartz-crystal microbalance, and infrared spectra measurements. TEM images of the hybrid film showed that the distribution of An nanoparticles depends on the surface density of DODAC and reaction time. IR spectral data provided evidence for a surface-enhanced effect of the An nanoparticles. The wavenumber of CH2-stretch vibrations of DODAC in the infrared external reflection spectra revealed that the DODAC molecules were adsorbed onto the An nanoparticles in a close-packed crystalline state for any surface density of DODAC, which is different front the usual behavior of Langmuir monolayers. (c) 2004 Elsevier Inc. All rights reserved.

引用

页码：634 / 639

页数：6

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