Synthesis and Functions of Azulene-Based Chiral Helicene Compounds
Project/Area Number |
18K05087
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 33010:Structural organic chemistry and physical organic chemistry-related
|
Research Institution | Kyushu University |
Principal Investigator |
Tani Fumito 九州大学, 先導物質化学研究所, 准教授 (80281195)
|
Project Period (FY) |
2018-04-01 – 2021-03-31
|
Project Status |
Completed (Fiscal Year 2020)
|
Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
|
Keywords | アズレン / ヘリセン / 不斉 / 酸化 / ラジカル / 電子スピン / チオフェン / パイ電子 / パイ電子系 / 光物性 / カチオンラジカル / 光学活性 / 酸化還元 / HOMO-LUMOギャップ / キノン / パイ共役系 / 光学特性 |
Outline of Final Research Achievements |
Chiral helicene compounds that have helical pi-conjugated frameworks comprised of ortho-fused aromatic rings have been intensively investigated. On the other hand, there have been very few studies accomplishing thorough characterization of helicene radicals, although they are of profound interest from the standpoint of fundamental sciences and technological fields. Helicene radicals are unique chemical species in that they have a combination of chirality and unpaired electron spin(s) delocalized on helical pi-conjugated orbital(s). In order to obtain a stable helicene radical, a new helicene compound named AIBTh was synthesized. Electron-donating isobenzothiophene and 1,1’-biazulene units are fused to afford the helical structure of AIBTh, which is the first azulene-based chiral helicene. Upon one-electron oxidation of AIBTh, its air-stable cation radical was successfully isolated. The X-ray crystal structure and specific electronic structure of this cation radical were clarified.
|
Academic Significance and Societal Importance of the Research Achievements |
単一の分子内にキラリティと電子スピンの両方を有するヘリセンのラジカル種は基礎科学および工学的応用の両面から重要でありながら,不安定であるために,その実例は極めて限られていた。本研究では,この課題の解決に取り組み,アズレン骨格を採用した新しい化合物を合成し,安定なラジカル種を得ることにも成功した。ヘリセン化合物の安定ラジカル種を得るための有用な知見を明らかにした点に学術的な意義がある。
|
Report
(4 results)
Research Products
(45 results)
-
-
[Journal Article] Synthesis of Ordered Carbonaceous Framework with Microporosity from Porphyrin with Ethynyl Groups2020
Author(s)
Hirotomo Nishihara, Kenta Matsuura, Mao Ohwada, Masanori Yamamoto, Yoshiaki Matsuo, Jun Maruyama, Yuichiro Hayasaka, Shingi Yamaguchi, Kazuhide Kamiya, Hisashi Konaka, Masataka Inoue, Fumito Tani
-
Journal Title
Chem. Lett.
Volume: 49
Issue: 6
Pages: 619-623
DOI
NAID
Related Report
Peer Reviewed
-
[Journal Article] Iron porphyrin-derived ordered carbonaceous frameworks2020
Author(s)
Masanori Yamamoto , Kazuma Takahashi , Mao Ohwada , Yuxin Wu , Kazuyuki Iwase Yuichiro Hayasaka , Hisashi Konaka , Henry Cove , Devis Di Tommaso , Kazuhide Kamiya , Jun Maruyama , Fumito Tani , Hirotomo Nishihara
-
Journal Title
Catalysis Today
Volume: 364
Pages: 164-171
DOI
Related Report
Peer Reviewed / Int'l Joint Research
-
[Journal Article] An Azulene-Based Chiral Helicene and Its Air-Stable Cation Radical2019
Author(s)
M. Narita, T. Teraoka, T. Murafuji, Y. Shiota, K. Yoshizawa, S. Mori, H. Uno, S. Kanegawa, O. Sato, K. Goto, F. Tani
-
Journal Title
Bull. Chem. Soc. Jpn.
Volume: 92
Issue: 11
Pages: 1867-1873
DOI
NAID
Related Report
Peer Reviewed / Open Access
-
-
-
-
-
[Journal Article] Central metal dependent modulation of induced-fit gas uptake in molecular porphyrin solids2018
Author(s)
H. Nishihara, M. Ohwada, T. Kamimura, M. Nishimura, H. Tanaka, S. Hiraide, M. T. Miyahara, K. Ariga, Q. Ji, J. Maruyama, F. Tani
-
Journal Title
Chem. Commun.
Volume: 54
Issue: 56
Pages: 7822-7825
DOI
Related Report
Peer Reviewed
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] Synthesis and Redox Properties of an Azulene-Based Chiral Helicene2019
Author(s)
Masahiro Narita, Takaaki Teraoka, Toshihiro Murafuji, Yoshihito Shiota, Kazunari Yoshizawa, Shigeki Mori, Hidemitsu Uno, Shinji Kanegawa, Osamu Sato, Kenta Goto, Fumito Tani
Organizer
The 18th Asian Chemical Congress (ACC)
Related Report
Int'l Joint Research / Invited
-
-
[Presentation] 1,1'-ビアズレンとチオフェンで構成される光学活性ヘリセンの合成と酸化還元特性2019
Author(s)
成田昌弘, 寺岡孝明, 村藤俊宏, 塩田淑仁, 吉澤一成, 森 重樹, 宇野英満, 金川慎治, 佐藤 治, 五島健太, 谷 文都
Organizer
2019 ハロゲン利用ミニシンポジウム
Related Report
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-