Magnetization increase of iron oxide by photoinduced aggregation of spiropyran

被引：49

作者：

Einaga, Y

Taguchi, M

Li, GM

Akitsu, T

Gu, ZZ

Sugai, T

Sato, O

机构：

[1] Keio Univ, Fac Sci & Technol, Dept Chem, Yokohama, Kanagawa 2238522, Japan

[2] Kanagawa Acad Sci & Technol, KSP, Kawasaki, Kanagawa 2130012, Japan

来源：

CHEMISTRY OF MATERIALS | 2003年 / 15卷 / 01期

关键词：

D O I：

10.1021/cm025648k

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：

Photofunctional magnetic vesicles of spiropyran (SP1822) that contain iron oxide particles, which exhibit super-paramagnetic properties at room temperature, were prepared. Photoinduced aggregation of the vesicles was observed by UV illumination. As a result, we were able to increase the magnetization value by photoillumination at room temperature.

引用

收藏

页码：8 / 10

页数：3

相关论文

共 21 条

[1] J-AGGREGATION OF PHOTOCHROMIC SPIROPYRAN IN LANGMUIR-BLODGETT-FILMS [J].

ANDO, E ;

MIYAZAKI, J ;

MORIMOTO, K ;

NAKAHARA, H ;

FUKUDA, K .

THIN SOLID FILMS, 1985, 133 (1-4) :21-28

[2] A photochromic molecule-based magnet [J].

Bénard, S ;

Rivière, E ;

Yu, P ;

Nakatani, K ;

Delouis, JF .

CHEMISTRY OF MATERIALS, 2001, 13 (01) :159-162

[3] Interplay between magnetism and photochromism in spiropyran-MnPS3 intercalation compounds [J].

Bénard, S ;

Léaustic, A ;

Rivière, E ;

Yu, P ;

Clément, R .

CHEMISTRY OF MATERIALS, 2001, 13 (10) :3709-3716

[4]

Bénard S, 2000, ADV MATER, V12, P48

[5]

Bui QT, 1998, IEEE T MAGN, V34, P2117, DOI 10.1109/20.706822

[6]

CHIKAZUMI SO, 1997, PHYSICS FERROMAGNETI, P6

[7]

DURR H, 1990, STUDIES ORGANIC CHEM, V40, P314

[8] Reversible photoinduced switching of magnetic properties at room temperature of iron oxide particles in self-assembled films containing azobenzene [J].

Einaga, Y ;

Gu, ZZ ;

Hayami, S ;

Fujishima, A ;

Sato, O .

THIN SOLID FILMS, 2000, 374 (01) :109-113

[9] Photofunctional vesicles containing prussian blue and azobenzene [J].

Einaga, Y ;

Sato, O ;

Iyoda, T ;

Fujishima, A ;

Hashimoto, K .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1999, 121 (15) :3745-3750

[10] SUSCEPTIBILITY PHENOMENA IN A FINE PARTICLE SYSTEM .2. FIELD-DEPENDENCE OF THE PEAK [J].

ELHILO, M ;

OGRADY, K ;

CHANTRELL, RW .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1992, 114 (03) :307-313