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

Takashi Yamamoto; Yasushi Umemura; Yasuaki Einaga

doi:10.1039/c3dt51402a

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

Takashi Yamamoto, Yasushi Umemura, Yasuaki Einaga

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

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.

Original language	English
Pages (from-to)	16014-16020
Number of pages	7
Journal	Dalton Transactions
Volume	42
Issue number	45
DOIs	https://doi.org/10.1039/c3dt51402a
Publication status	Published - 2013 Dec 7

ASJC Scopus subject areas

Inorganic Chemistry

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10.1039/c3dt51402a

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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.",

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AU - Yamamoto, Takashi

AU - Umemura, Yasushi

AU - Einaga, Yasuaki

PY - 2013/12/7

Y1 - 2013/12/7

N2 - 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.

AB - 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.

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

Abstract

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