Issue 45, 2013
From the journal:

Dalton Transactions

Structure-distortion-induced photomagnetic effect in azobenzene/polyoxometalate Langmuir–Blodgett films†

Takashi Yamamoto,*a   Yasushi Umemurab  and  Yasuaki Einaga*a  

* Corresponding authors

a Department of Chemistry, Keio University, 3-14-1 Hiyoshi, Yokohama 223-8522, Japan
E-mail: takyama@chem.keio.ac.jp, einaga@chem.keio.ac.jp
Fax: +81-45-566-1697
Tel: +81-45-566-1790

b Department of Applied Chemistry, National Defense Academy, 1-10-20 Hashirimizu, Yokosuka 239-8686, Japan

Abstract

We have prepared photomagnetic Langmuir–Blodgett films composed of an amphiphilic azobenzene and a magnetic polyoxometalate. The obtained film possesses a well-organized layered structure where polyoxometalate anions are sandwiched by azobenzene cations in a single-layered manner. Reversible photoisomerization of azobenzene was achieved even at low temperature, accompanying intensity changes in the d–d transition of polyoxometalate anions. The photomagnetic effect was observed reversibly upon alternate UV and visible light irradiation. Based on polarized spectroscopy, the observed photomagnetic effect is ascribed to the structure-distortion of polyoxometalate layers.

Graphical abstract: Structure-distortion-induced photomagnetic effect in azobenzene/polyoxometalate Langmuir–Blodgett films

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Article information

DOI
https://doi.org/10.1039/C3DT51402A
Article type
Paper
Submitted
29 May 2013
Accepted
12 Jul 2013
First published
30 Jul 2013

Dalton Trans., 2013,42, 16014-16020

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Structure-distortion-induced photomagnetic effect in azobenzene/polyoxometalate Langmuir–Blodgett films

T. Yamamoto, Y. Umemura and Y. Einaga, Dalton Trans., 2013, 42, 16014 DOI: 10.1039/C3DT51402A

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