Photomagnetic hybrid ultrathin films

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Two novel types of photomagnetic hybrid ultrathin film (film A and B) of metal cyanides have been fabricated by means of the modified Langmuir-Blodgett method using a smectite clay mineral. Film A is composed of an amphiphilic azobenzene cation, a montmorillonite, and Prussian Blue in which photocontrol in the magnetization was realized by the photoisomerization of azobenzene chromophore. The observed photomagnetic efficiency was large (ca. 11%) due to the well-organized structure of the ultrathin film. Film B is composed of a quaternary ammonium salt, a montmorillonite, and Co-Fe Prussian Blue in which the photoinduced magnetization caused by the electron transfer exhibited an anisotropic response with regards to the direction of the applied magnetic field. This phenomenon is ascribed to the unique structure of Co-Fe Prussian Blue formed onto the clay layer.

Original languageEnglish
Pages (from-to)781-790
Number of pages10
JournalJournal of Solid State Electrochemistry
Volume11
Issue number6
DOIs
Publication statusPublished - 2007 Jun

Fingerprint

Ultrathin films
Clay minerals
Bentonite
Azobenzene
montmorillonite
Magnetization
Photoisomerization
Cyanides
clays
Chromophores
Ammonium Compounds
Cations
Clay
Salts
Positive ions
Metals
magnetization
Magnetic fields
cyanides
Electrons

Keywords

  • Clay mineral
  • Langmuir-Blodgett films
  • Organic-inorganic hybrid
  • Photomagnet
  • Prussian blue

ASJC Scopus subject areas

  • Electrochemistry
  • Electrical and Electronic Engineering
  • Chemical Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)
  • Materials Science (miscellaneous)

Cite this

Photomagnetic hybrid ultrathin films. / Yamamoto, Takashi; Einaga, Yasuaki.

In: Journal of Solid State Electrochemistry, Vol. 11, No. 6, 06.2007, p. 781-790.

Research output: Contribution to journalArticle

@article{6c0669905bd742d1a7f2a1180e67aac7,
title = "Photomagnetic hybrid ultrathin films",
abstract = "Two novel types of photomagnetic hybrid ultrathin film (film A and B) of metal cyanides have been fabricated by means of the modified Langmuir-Blodgett method using a smectite clay mineral. Film A is composed of an amphiphilic azobenzene cation, a montmorillonite, and Prussian Blue in which photocontrol in the magnetization was realized by the photoisomerization of azobenzene chromophore. The observed photomagnetic efficiency was large (ca. 11{\%}) due to the well-organized structure of the ultrathin film. Film B is composed of a quaternary ammonium salt, a montmorillonite, and Co-Fe Prussian Blue in which the photoinduced magnetization caused by the electron transfer exhibited an anisotropic response with regards to the direction of the applied magnetic field. This phenomenon is ascribed to the unique structure of Co-Fe Prussian Blue formed onto the clay layer.",
keywords = "Clay mineral, Langmuir-Blodgett films, Organic-inorganic hybrid, Photomagnet, Prussian blue",
author = "Takashi Yamamoto and Yasuaki Einaga",
year = "2007",
month = "6",
doi = "10.1007/s10008-006-0196-x",
language = "English",
volume = "11",
pages = "781--790",
journal = "Journal of Solid State Electrochemistry",
issn = "1432-8488",
publisher = "Springer Verlag",
number = "6",

}

TY - JOUR

T1 - Photomagnetic hybrid ultrathin films

AU - Yamamoto, Takashi

AU - Einaga, Yasuaki

PY - 2007/6

Y1 - 2007/6

N2 - Two novel types of photomagnetic hybrid ultrathin film (film A and B) of metal cyanides have been fabricated by means of the modified Langmuir-Blodgett method using a smectite clay mineral. Film A is composed of an amphiphilic azobenzene cation, a montmorillonite, and Prussian Blue in which photocontrol in the magnetization was realized by the photoisomerization of azobenzene chromophore. The observed photomagnetic efficiency was large (ca. 11%) due to the well-organized structure of the ultrathin film. Film B is composed of a quaternary ammonium salt, a montmorillonite, and Co-Fe Prussian Blue in which the photoinduced magnetization caused by the electron transfer exhibited an anisotropic response with regards to the direction of the applied magnetic field. This phenomenon is ascribed to the unique structure of Co-Fe Prussian Blue formed onto the clay layer.

AB - Two novel types of photomagnetic hybrid ultrathin film (film A and B) of metal cyanides have been fabricated by means of the modified Langmuir-Blodgett method using a smectite clay mineral. Film A is composed of an amphiphilic azobenzene cation, a montmorillonite, and Prussian Blue in which photocontrol in the magnetization was realized by the photoisomerization of azobenzene chromophore. The observed photomagnetic efficiency was large (ca. 11%) due to the well-organized structure of the ultrathin film. Film B is composed of a quaternary ammonium salt, a montmorillonite, and Co-Fe Prussian Blue in which the photoinduced magnetization caused by the electron transfer exhibited an anisotropic response with regards to the direction of the applied magnetic field. This phenomenon is ascribed to the unique structure of Co-Fe Prussian Blue formed onto the clay layer.

KW - Clay mineral

KW - Langmuir-Blodgett films

KW - Organic-inorganic hybrid

KW - Photomagnet

KW - Prussian blue

UR - http://www.scopus.com/inward/record.url?scp=34147126310&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34147126310&partnerID=8YFLogxK

U2 - 10.1007/s10008-006-0196-x

DO - 10.1007/s10008-006-0196-x

M3 - Article

VL - 11

SP - 781

EP - 790

JO - Journal of Solid State Electrochemistry

JF - Journal of Solid State Electrochemistry

SN - 1432-8488

IS - 6

ER -