Development of pH-Sensitive Spin-Crossover Complex Film and Direct Observation of Proton Flow
| Project/Area Number |
24655115
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Functional materials chemistry
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
OKAZAWA Atsushi 東京大学, 大学院総合文化研究科, 助教 (30568275)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | スピンクロスオーバー錯体膜 / pH応答性 / イオン交換膜 / ハロクロミズム / EXAFS / XANES / プロトン流の可視化 / スピンクロスオーバー / プロトン流 / 時空間制御 |
|---|
| Research Abstract |
The spin state of a pH-sensitive spin-crossover iron(II) complex in highly proton-conductive Nafion membrane, [FeII(diAMsar)]@Nafion (diAMsar = 1,8-diaminosarcophagine), was spatiotemporally manipulated by electric field-induced proton concentration gradient derived from applied voltage. [Fe(II)(diAMsar)] has the high-spin (HS) state of Fe(II) in acidic condition, whereas it has the low-spin (LS) state in basic condition due to the protonation/deprotonation of the terminal amino groups of diAMsar being associated with color change. Applied voltage reversibly induced the time-variable color change of [Fe(II)(diAMsar)]@Nafion, corresponding to the dynamical spin-crossover behavior of [Fe(II)(diAMsar)]. In this way, we visualized the proton flow in Nafion membrane by using the pH-sensitive spin-crossover complex as a color indicator for the first time.
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Report
(3 results)
Research Products
(144 results)
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[Journal Article] A trickey water molecule coordinated to a verdazyl radical-iron(II)complex : a multitechnique approach2014
Author(s)
Hajime Kamebuchi, Masashi Okubo, Atsushi Okazawa, Masaya Enomoto, Jun Harada, Keiichiro Ogawa, Goro Maruta, Sadamu Takeda, Norimichi Kojima, Cyrille Train, Michel Verdaguer
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Journal Title
Physical Chemistry Chemical Physics
Volume: (印刷中)
Issue: 19
Pages: 9086-9095
DOI
Related Report
Peer Reviewed
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[Journal Article] Reversible Solid State Redox of an Octacyanometallate-bridged Coordination Polymer by Electrochemical Ion Insertion/extraction2013
Author(s)
M. Okubo, K. Kagesawa, Y. Mizuno, D. Asakura, E. Hosono, T. Kudo, H. Zhou, K. Fujii, H. Uekusa, S. Nishimura, A. Yamada, A. Okazawa, N. Kojima
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Journal Title
Inorg. Chem.
Volume: 52
Issue: 7
Pages: 3772-3779
DOI
Related Report
Peer Reviewed
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