Self-Organization of Gold Nanoparticles Coated with a Monolayer of Azobenzene Liquid Crystals

被引：3

作者：

Tsutsumi, Osamu ^{[1
]}

Yamamoto, Keitarou ^{[2
]}

Ohta, Koji ^{[2
]}

Fujisawa, Kaori ^{[3
]}

Uno, Kenjiro ^{[3
]}

Hashishin, Takeshi ^{[2
]}

Yogi, Chihiro ^{[2
]}

Kojima, Kazuo ^{[1
]}

机构：

[1] Ritsumeikan Univ, Dept Appl Chem, Coll Life Sci, Kusatsu 5258577, Japan

[2] Ritsumeikan Univ, Grad Sch Sci & Engn, Kusatsu 5258577, Japan

[3] Ritsumeikan Univ, R GIRO, Kusatsu 5258577, Japan

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2011年 / 550卷

关键词：

Gold Nanoparticle; Liquid Crystal; Azobenzene; Self-Organization; Photochromism; PHOTOCHEMICAL PHASE-TRANSITION;

D O I：

10.1080/15421406.2011.600578

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A gold nanoparticle having a monolayer of azobenzene liquid crystal (LC) was synthesized. The size of the gold nanoparticle obtained was 4.7 nm in average diameter, and it was soluble in common non-polar organic solvents such as toluene and dichloromethane. We confirmed that the reversible photochemical and thermal isomerization of the azobenzene could take place on the surface of the gold nanoparticles in analogy with free azobenzenes in solutions. Furthermore, a 1-dimensional self-organization of the nanoparticle was observed by transmission electron microscopy. However, a gold nanoparticle without LC molecules never showed such self-organization. Therefore, we conclude that the self-organization of the gold nanoparticle is based on the liquid crystallinity of the organic ligands attached on their surface.

引用

页码：105 / 111

页数：7

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