Magnetic Vesicles of Amphiphilic Spiropyran Containing Iron Oxide Particles on a Solid State Substrate

Minori Taguchi, Guangming Li, Zhongze Gu, Osamu Sato, Yasuaki Einaga

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Incorporation of photochromic compounds into magnetic systems is one of the new strategies being implemented to realize the control of magnetic properties by photoillumination. We have designed composite materials comprising iron oxide particles and photochromic spiropyran vesicles as cast films on substrates. Photofunctional magnetic vesicles of amphiphilic spiropyran (SP1822) containing iron oxide particles exhibit superparamagnetic properties at room temperature. Both photoisomerization and photoinduced aggregation of the photoresponsive magnetic vesicles were observed, even without any supporting media such as solvents or polymer matrixes. As a result of the assembly of the vesicles, magnetic dipolar interactions among adjacent iron oxide particles were induced by photoillumination at room temperature, even in the solid state.

Original languageEnglish
Pages (from-to)4756-4760
Number of pages5
JournalChemistry of Materials
Volume15
Issue number25
DOIs
Publication statusPublished - 2003 Dec 16

Fingerprint

Iron oxides
Substrates
Photoisomerization
Polymer matrix
Magnetic properties
Agglomeration
Temperature
Composite materials
ferric oxide
spiropyran

ASJC Scopus subject areas

  • Materials Chemistry
  • Materials Science(all)

Cite this

Magnetic Vesicles of Amphiphilic Spiropyran Containing Iron Oxide Particles on a Solid State Substrate. / Taguchi, Minori; Li, Guangming; Gu, Zhongze; Sato, Osamu; Einaga, Yasuaki.

In: Chemistry of Materials, Vol. 15, No. 25, 16.12.2003, p. 4756-4760.

Research output: Contribution to journalArticle

Taguchi, Minori ; Li, Guangming ; Gu, Zhongze ; Sato, Osamu ; Einaga, Yasuaki. / Magnetic Vesicles of Amphiphilic Spiropyran Containing Iron Oxide Particles on a Solid State Substrate. In: Chemistry of Materials. 2003 ; Vol. 15, No. 25. pp. 4756-4760.
@article{d37d95c997694f56ac47d3ecd89f9c86,
title = "Magnetic Vesicles of Amphiphilic Spiropyran Containing Iron Oxide Particles on a Solid State Substrate",
abstract = "Incorporation of photochromic compounds into magnetic systems is one of the new strategies being implemented to realize the control of magnetic properties by photoillumination. We have designed composite materials comprising iron oxide particles and photochromic spiropyran vesicles as cast films on substrates. Photofunctional magnetic vesicles of amphiphilic spiropyran (SP1822) containing iron oxide particles exhibit superparamagnetic properties at room temperature. Both photoisomerization and photoinduced aggregation of the photoresponsive magnetic vesicles were observed, even without any supporting media such as solvents or polymer matrixes. As a result of the assembly of the vesicles, magnetic dipolar interactions among adjacent iron oxide particles were induced by photoillumination at room temperature, even in the solid state.",
author = "Minori Taguchi and Guangming Li and Zhongze Gu and Osamu Sato and Yasuaki Einaga",
year = "2003",
month = "12",
day = "16",
doi = "10.1021/cm0344515",
language = "English",
volume = "15",
pages = "4756--4760",
journal = "Chemistry of Materials",
issn = "0897-4756",
publisher = "American Chemical Society",
number = "25",

}

TY - JOUR

T1 - Magnetic Vesicles of Amphiphilic Spiropyran Containing Iron Oxide Particles on a Solid State Substrate

AU - Taguchi, Minori

AU - Li, Guangming

AU - Gu, Zhongze

AU - Sato, Osamu

AU - Einaga, Yasuaki

PY - 2003/12/16

Y1 - 2003/12/16

N2 - Incorporation of photochromic compounds into magnetic systems is one of the new strategies being implemented to realize the control of magnetic properties by photoillumination. We have designed composite materials comprising iron oxide particles and photochromic spiropyran vesicles as cast films on substrates. Photofunctional magnetic vesicles of amphiphilic spiropyran (SP1822) containing iron oxide particles exhibit superparamagnetic properties at room temperature. Both photoisomerization and photoinduced aggregation of the photoresponsive magnetic vesicles were observed, even without any supporting media such as solvents or polymer matrixes. As a result of the assembly of the vesicles, magnetic dipolar interactions among adjacent iron oxide particles were induced by photoillumination at room temperature, even in the solid state.

AB - Incorporation of photochromic compounds into magnetic systems is one of the new strategies being implemented to realize the control of magnetic properties by photoillumination. We have designed composite materials comprising iron oxide particles and photochromic spiropyran vesicles as cast films on substrates. Photofunctional magnetic vesicles of amphiphilic spiropyran (SP1822) containing iron oxide particles exhibit superparamagnetic properties at room temperature. Both photoisomerization and photoinduced aggregation of the photoresponsive magnetic vesicles were observed, even without any supporting media such as solvents or polymer matrixes. As a result of the assembly of the vesicles, magnetic dipolar interactions among adjacent iron oxide particles were induced by photoillumination at room temperature, even in the solid state.

UR - http://www.scopus.com/inward/record.url?scp=0346120166&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0346120166&partnerID=8YFLogxK

U2 - 10.1021/cm0344515

DO - 10.1021/cm0344515

M3 - Article

VL - 15

SP - 4756

EP - 4760

JO - Chemistry of Materials

JF - Chemistry of Materials

SN - 0897-4756

IS - 25

ER -