高屈折率を示すフェロセン含有ハイパーブランチ型芳香族ポリアミドの合成と屈折率の評価

概要

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To develop a woodpile-type photonic crystal consisting of an organic polymer material, we have attempted to prepare a novel polymer with a high refractive index of over 2.0. For this purpose, the synthesis of hyperbranched aromatic polyamide containing a ferrocene moiety at the chain ends (HB-PA-Fc) was carried out, and the refractive index was evaluated using a confocal microscope and compared with that of aromatic polyamide containing ferrocene in the main chain (L-PA-Fc). HB-PA-Fc was prepared by the polymer reaction of ferrocenylmethanol with the starting hyperbranched aromatic polyamide (HB-PA), which was easily prepared by the polymerization of AB_2-type monomer. It was found that HB-PA-Fc exhibited a high refractive index of 2.03, which is higher than those of L-PA-Fc and HB-PA. Therefore, the hyperbranched structure and the introduction of the ferrocene moiety were effective for improving the refractive index. In addition, the degree of branching of HB-PA was calculated as 0.367 using a Frechet-type equation based on the model compound.
東海大学の論文