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A Redox-Active Microporous Organosiloxane Containing a Stable Neutral Radical,Trioxotriangulene |
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| Authors: | Dr. Tsuyoshi Murata Dr. Noriaki Asakura Dr. Ryotaro Tsuji Dr. Yuki Kanzaki Prof. Kazunobu Sato Prof. Takeji Takui Prof. Yasushi Morita |
| Affiliation: | 1. Department of Applied Chemistry, Faculty of Engineering, Aichi Institute of Technology, Yachigusa, 1247, Yakusa Toyota, Aichi, Japan;2. Material Solutions New Research Engine, KANEKA Corporation, Techno-Alliance Building, Osaka University, Yamadaoka 2–8, Suita, Osaka, Japan;3. Department of Chemistry and Molecular Materials Science, Graduate School of Science, Osaka City University, Sugimoto 3-3-138, Sumiyoshi-ku, Osaka, Japan |
| Abstract: | A new silyl-substituted trioxotriangulene ( TOT ) neutral radical and corresponding porous organosiloxanes (POSs) were synthesized. The neutral radical exhibited a peculiarly high stability and formed a diamagnetic π-dimer characteristic to TOT neutral radicals stabilized by the strong multiple SOMO-SOMO interaction in both solution and solid states. POSs including TOT units within the organosiloxane-wall were prepared by polycondensation of the silyl groups and formed microporous structures with ∼1 nm-size diameters. Redox ability of TOT units in the POS was demonstrated by the treatment of oxidant/reductant in heterogeneous suspension condition, where the TOT units were reversibly converted between reduced and neutral radical species. Furthermore, the solid-state electrochemical measurements of the POS revealed the reversible multi-stage redox ability of TOT units involving polyanionic species within the organosiloxane-wall. |
| Keywords: | multistage redox ability organic rechargeable battery polycyclic aromatic molecule porous organosiloxane stable neutral radical |