Helicity induction on a poly(phenylacetylene) bearing a phosphonate residue by chiral dendrons |
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| Authors: | Yuko Kamikawa Takashi Kato Hisanari Onouchi Daisuke Kashiwagi Katsuhiro Maeda Eiji Yashima |
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| Institution: | 1. Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan;2. Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan |
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| Abstract: | A series of optically active dendrons with a primary amino group at the terminal were prepared from L - or D -glutamic acid, and their helicity induction abilities for a poly(phenylacetylene) bearing a phosphonate pendant were characterized with ultraviolet–visible and circular dichroism spectroscopy. The magnitude of the Cotton effects of the polymer induced by the dendrons significantly increased upon complexation with a higher generation dendron. The effect of the chirality of the glutamate residues (L and D ) on the helicity induction was also studied. © 2004 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 42: 4580–4586, 2004 |
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| Keywords: | chiral conjugated polymers dendrons helix polyacetylenes |
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