Novel Co complex with high transformation temperature of valence tautomerism

Aili Cui; Kazuyuki Takahashi; Akira Fujishima; Osamu Sato

doi:10.1016/j.nainr.2003.08.001

Novel Co complex with high transformation temperature of valence tautomerism

Aili Cui, Kazuyuki Takahashi, Akira Fujishima, Osamu Sato

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

27 Citations (Scopus)

Abstract

The preparation and characterization of [Co^II-HS(dpa) (3,5-DBSQ)₂] are presented first time. From the magnetic curve, the phase transition temperatures, T_c is 380 K. To our knowledge, the T_c value is the highest among the species exhibiting thermal valence tautomerism. After illumination with 532 nm light at 5 K, the magnetization values increase from μ_eff=1.73 to 2.0 μ _B, showing valence tautomerism. The metastable state will recover to the original state with the increase of temperature. The alternate illumination with 532 and 830 nm light at 5 K can induce a reversible change in magnetization. The quick response to light means that this compound can be used for the development of optical-magnetic switch.

Original language	English
Pages (from-to)	243-246
Number of pages	4
Journal	Journal of Photochemistry and Photobiology A: Chemistry
Volume	161
Issue number	2-3
DOIs	https://doi.org/10.1016/j.nainr.2003.08.001
Publication status	Published - Jan 30 2004
Externally published	Yes

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)
Physics and Astronomy(all)

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10.1016/j.nainr.2003.08.001

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title = "Novel Co complex with high transformation temperature of valence tautomerism",

abstract = "The preparation and characterization of [CoII-HS(dpa) (3,5-DBSQ)2] are presented first time. From the magnetic curve, the phase transition temperatures, Tc is 380 K. To our knowledge, the Tc value is the highest among the species exhibiting thermal valence tautomerism. After illumination with 532 nm light at 5 K, the magnetization values increase from μeff=1.73 to 2.0 μ B, showing valence tautomerism. The metastable state will recover to the original state with the increase of temperature. The alternate illumination with 532 and 830 nm light at 5 K can induce a reversible change in magnetization. The quick response to light means that this compound can be used for the development of optical-magnetic switch.",

author = "Aili Cui and Kazuyuki Takahashi and Akira Fujishima and Osamu Sato",

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T1 - Novel Co complex with high transformation temperature of valence tautomerism

AU - Cui, Aili

AU - Takahashi, Kazuyuki

AU - Fujishima, Akira

AU - Sato, Osamu

PY - 2004/1/30

Y1 - 2004/1/30

N2 - The preparation and characterization of [CoII-HS(dpa) (3,5-DBSQ)2] are presented first time. From the magnetic curve, the phase transition temperatures, Tc is 380 K. To our knowledge, the Tc value is the highest among the species exhibiting thermal valence tautomerism. After illumination with 532 nm light at 5 K, the magnetization values increase from μeff=1.73 to 2.0 μ B, showing valence tautomerism. The metastable state will recover to the original state with the increase of temperature. The alternate illumination with 532 and 830 nm light at 5 K can induce a reversible change in magnetization. The quick response to light means that this compound can be used for the development of optical-magnetic switch.

AB - The preparation and characterization of [CoII-HS(dpa) (3,5-DBSQ)2] are presented first time. From the magnetic curve, the phase transition temperatures, Tc is 380 K. To our knowledge, the Tc value is the highest among the species exhibiting thermal valence tautomerism. After illumination with 532 nm light at 5 K, the magnetization values increase from μeff=1.73 to 2.0 μ B, showing valence tautomerism. The metastable state will recover to the original state with the increase of temperature. The alternate illumination with 532 and 830 nm light at 5 K can induce a reversible change in magnetization. The quick response to light means that this compound can be used for the development of optical-magnetic switch.

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JO - Journal of Photochemistry and Photobiology A: Chemistry

JF - Journal of Photochemistry and Photobiology A: Chemistry

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ER -

Novel Co complex with high transformation temperature of valence tautomerism

Abstract

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