Study of the octaethylporphyrin chromatic system with highly reversible spectral changes between visible and near-infrared regions
| Project/Area Number |
26410039
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Organic chemistry
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| Research Institution | University of Toyama |
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Principal Investigator |
HIGUCHI HIROYUKI 富山大学, 大学院理工学研究部(理学), 教授 (00165094)
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| Co-Investigator(Kenkyū-buntansha) |
吉野 惇郎 富山大学, 大学院理工学研究部(理学), 助教 (70553353)
林 直人 富山大学, 大学院理工学研究部(理学), 准教授 (90281104)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | ポルフィリン / ジアセチレン / 可逆的変換 / π電子 / ルイス塩基 / スペーサー / スペクトル / 近赤外 / 拡張共役系 / π 電子 |
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| Outline of Final Research Achievements |
The diacetylene-group connected chromatic system of [octaethylporphyrin]-[spacer]-[Lewis base] (OEP-Spc-LB) was conclusively studied, in which a trigger-like interaction of the terminal LB with trifluoroacetic acid (TFA) dramatically affects the inherent electronic properties of OEP. The aim and goal of this research is to achieve a methodology for producing the desired electronic structures of OEP purposively, by choosing adequate pairs of Spc and LB. The spectral properties of these OEP derivatives were examined, and contemplated in view of a cooperative effect of Spc and LB on their OEP nucleus. Consequently, the structural elements for molecular design were proposed in order to improve their reversible spectral changes between neutral and acidic media in terms of sensitivity, stability, and visibility to TFA. Along the guideline of the molecular design, further investigations of the OEP derivatives composed of the higher π electron mobile Spc and the more basic LB are in progress.
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Report
(4 results)
Research Products
(53 results)
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[Journal Article] A DFT investigation of anti- and syn-fused isomers of difuropyridines, difuropyradines, and their dithieno analogues2016
Author(s)
Hayashi, N., Okamoto, N., Sasaki, N., Ito, M., Yoshino, J., Higuchi, H.
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Journal Title
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Presentation] A proton-mediated chromatic system of octaethylporphyrin derivatives with highly sensitive, stable, and dramatic behaviors in their spectral changes2015
Author(s)
Kempe, H, Yamamoto, J., Ishida, M., Yoshino, J., Hayashi, N., Higuchi, H.
Organizer
PACIFICHEM2015
Place of Presentation
ハワイコンベンションセンター他，ハワイ州アメリカ合衆国
Year and Date
2015-12-15
Related Report
Int'l Joint Research
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[Presentation] Synthesis, Structures, and Solid-State Photochromic Behavior of Tetracoordinate Cationic Boron Complexes Bearing a Bipyridine Moiety2015
Author(s)
Hatta, N., Sekikawa, T., Yoshino, J., Hayashi, N., Higuchi, H.
Organizer
ICCOSS XXII
Place of Presentation
朱鷺メッセ，新潟
Year and Date
2015-07-12
Related Report
Int'l Joint Research
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