Preparation and characteristics of α-Fe2O3 nanocrystalline/block copolymer heterostructure composite

被引：4

作者：

Ai, X ^{[1
]}

Qian, XM ^{[1
]}

Wang, DY ^{[1
]}

Zhang, XT ^{[1
]}

Song, Q ^{[1
]}

Liu, FG ^{[1
]}

Bai, YB ^{[1
]}

Li, TJ ^{[1
]}

Tang, XY ^{[1
]}

机构：

[1] Jilin Univ, Dept Chem, Changchun 130023, Peoples R China

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 1999年 / 337卷

基金：

中国国家自然科学基金;

关键词：

alpha-Fe2O3; block copolymer; heterostructure; nanocomposite;

D O I：

10.1080/10587259908023419

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

alpha-Fe2O3 nanocrystalline was encapsulated by block copolymer, hydroxylated poly(styrene-b-butadiene-b-styrene) (HO-SBS), and formed alpha-Fe2O3/HO-SBS heterostructure composite consisting of nanocrystalline core and copolymer shell. Transmission electron microscopy (TEM) and atomic force microscopy (AFM) are used to investigate the structure of the composite. And the results show that alpha-Fe2O3 core is 45nm in diameter and copolymer shell is 10nm. Cyclic voltammetry demonstrated copolymer shells can act as potential barriers, while electric field introduced surface photovoltage spectroscopy (EFISPS) testifies that charges can be introduced to penetrate through the shell under external electronic field.

引用

页码：229 / 232

页数：4

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