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Unexpected formation of benziphthalocyanine dimer: An easily synthesizable dimer of phthalocyanine analogue |
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| Authors: | Naoyuki Toriumi Atsuya Muranaka Daisuke Hashizume Masanobu Uchiyama |
| Institution: | 1. Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan;2. Elements Chemistry Laboratory, RIKEN, and Advanced Elements Chemistry Research Team, RIKEN Center for Sustainable Resource Science (CSRS), Wako-shi, Saitama 351-0198, Japan;3. Materials Characterization Support Unit, RIKEN Center for Emergent Matter Science (CEMS), Wako-shi, Saitama 351-0198, Japan |
| Abstract: | Methylene-bridged benziphthalocyanine dimer 2 was unexpectedly generated by the reaction of dihydroxybenziphthalocyanine 1 and formaldehyde in the presence of a catalytic amount of a base at room temperature. Single-crystal X-ray diffraction analysis of 2 revealed a V-shaped structure. Dimer 2 exhibited longer-wavelength absorption and fluorescence bands than monomer 1 in the near-IR region. |
| Keywords: | Benziphthalocyanine Dimer Near-infrared Phthalocyanine X-ray crystallography |
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