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Int. J. Mol. Sci. 2013, 14(1), 322-331; doi:10.3390/ijms14010322

Synthesis and Self-Organization of Fluorene-Conjugated Bisimidazolylporphyrin and Its Optical Properties

†,* ,
Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan Present address: Interdisciplinary Graduate School of Medicine and Engineering, Division of Medical and Engineering Science, Life Environment Medical Engineering, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511, Japan. Present address: Institute of Advanced Energy, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan § These authors contributed equally to this work.
* Author to whom correspondence should be addressed.
Received: 26 November 2012 / Revised: 14 December 2012 / Accepted: 17 December 2012 / Published: 21 December 2012
(This article belongs to the Special Issue Molecular Self-Assembly 2012)
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A conjugated-bisimidazolylporphyrin bridged by bis(ethynylfluorene) was synthesized and organized into linear polymer through self-coordination having mean molecular weights, Mw and Mn, of ~2.1 × 105 Da and ~1.6 × 105 Da, respectively. A large two-photon absorption cross section value of 3.4 × 105 GM (per dimer unit) was observed. This value was comparable to that of the previously reported self-assembled linear polymer consisting of butadiyne-bridged imidazolylporphyrins. The two-photon absorption properties could be controlled by tuning the wavelength and absorption intensity of the one-photon absorption.
Keywords: porphyrin; self-assembly; two-photon absorption; fluorene; imidazole; Z-scan porphyrin; self-assembly; two-photon absorption; fluorene; imidazole; Z-scan
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Ogawa, K.; Makiuchi, N.; Kobuke, Y. Synthesis and Self-Organization of Fluorene-Conjugated Bisimidazolylporphyrin and Its Optical Properties. Int. J. Mol. Sci. 2013, 14, 322-331.

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