1995 Fiscal Year Final Research Report Summary
Studies on Molecular Devices showing Redox Response
| Project/Area Number |
06640675
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Organic chemistry
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| Research Institution | Hokkaido University (1995)
Tohoku University (1994) |
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Principal Investigator |
SUZUKI Takanori Hokkaido University, Graduate School of Science, Associate Professor, 大学院理学研究科, 助教授 (70202132)
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| Project Period (FY) |
1994 – 1995
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| Keywords | Redox System ; / Molecular Device ; / Electrochromism ; / Photochromism ; / Dynamic Redox Behavior |
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| Research Abstract |
The research project is intended to construct the organic redox systems which exhibit the electrochemical response such as electrochromism. In order to realize such molecular systems a new way of molecular designing was adopted where (1) the charged species would be stabilized by formation of strong chromophores with large pi-conjugation but not by aromatization and (2) drastic structural changes should be occurred during the electron transfer. These conditions are quite different from what had been used to design the multi-stage redox systems for a long time. The "dynamic redox behavior"is the central concept in this work, thus the redox pairs were designed so as to undergo reversible C-C bond formation andcleavage upon electron transfer. Dibenzo-TTF derivatives inserted with a cycloalkane ring as well as their isomersof the tricyclic skeleton were studiedin detail as prototypes. Some molecules studies here were proven to be thereversible dynamic redox systems . In orderr to construct the electrochromic systems other molecules containing triarylmethane dye skeletons were designed. The reversible interconversion between hexaarylethane derivatives and bis (triarylmethane) dications was demonstrated .
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[Publications] Masatoshi Hirayama, Manabu Itasaka, Takanori Suzuki, Yoshiro Yamashita, Tsutomu Miyashi: ""The pi-trianion radical of 2,3,6,7-tetracyanobenzo[1,2, -b : 4,5-b']bisdithiole-4,8-dione. Observation of ESR with ^<13>C-Satellites in Natural Abundance"" Chem.Lett.511-512 (1995)
Description
「研究成果報告書概要(欧文)」より
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[Publications] Masatoshi Hirayama, Toshitaka Terasaka, Yoshiro Yamashita, Takanori Suzuki, Tsutomu Miyashi, Yoshiharu Usui: ""ESR of the anion radical of 2,6-dithioxobenzo[1,2, d : 4,5-d']bis[1,3]-dithiole-4,8-dione. Observation of the Satellites of ^<17>O,^<13>C,and ^<33>S and the second-generation satellites due to both ^<13>SC and ^<33>S in Natural Abundance"" Bull.Chem.Soc.Jpn.68. 3337-3339 (1995)
Description
「研究成果報告書概要(欧文)」より
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