This work was supported by Grants-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology (Japan), “Quantum Cybernetics”, FIRST project on QIP, JSPS and a Sasakawa Scientific Research Grant from the Japan Science Society. The authors acknowledge Prof. T. Kubo of Osaka University (Japan) for the use of facilities and valuable discussions, Prof. S. Ito and J. Takaichi of Osaka University (Japan) for the use of a spectrometer, and Prof. B. Champagne of Facultés Universitaires Notre-Dame de la Paix (FUNDP), Belgium for the use of computers and the program for the theoretical calculations. The synchrotron radiation experiments were performed at the BL38B1 of SPring-8 with the approval of the Japan Synchrotron Radiation Research Institute (JASRI; proposal No. 2011A1341). The authors are grateful to Dr. K. Miura, Dr. S. Baba, and Dr. N. Mizuno for crystallographic data collection.
Indeno[2,1-b]fluorene: A 20-π-Electron Hydrocarbon with Very Low-Energy Light Absorption†
Article first published online: 29 APR 2013
Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Angewandte Chemie International Edition
Volume 52, Issue 23, pages 6076–6079, June 3, 2013
How to Cite
Shimizu, A., Kishi, R., Nakano, M., Shiomi, D., Sato, K., Takui, T., Hisaki, I., Miyata, M. and Tobe, Y. (2013), Indeno[2,1-b]fluorene: A 20-π-Electron Hydrocarbon with Very Low-Energy Light Absorption . Angew. Chem. Int. Ed., 52: 6076–6079. doi: 10.1002/anie.201302091
- Issue published online: 30 MAY 2013
- Article first published online: 29 APR 2013
- Manuscript Received: 13 MAR 2013
- Ministry of Education, Culture, Sports, Science and Technology (Japan)
- Japan Science Society
Smaller can be better: The first example of meta-quinodimethane embedded in an indenofluorene framework has been synthesized. 10,12-Dimesitylindeno[2,1-b]fluorene exhibits extremely low-energy light absorption, despite the small conjugation space of the molecule, which consists of only 20 π electrons.