Chromatic transition of π-conjugated polydiacetylene and the subsequent aggregation phenomena

Hidetoshi Oikawa, Tatsumi Korenaga, Shuji Okada, Hachiro Nakanishi

    研究成果: Article査読

    10 被引用数 (Scopus)

    抄録

    Static and dynamic light scattering from π-conjugated poly(4BCMU) in toluene solutions were measured at 353 K (yellow phase) and 323 K (red phase) to evaluate the hydrodynamic radius Rh and the fractal dimension D. It was suggested that poly(4BCMU) may exist not as an isolated worm-like chain but as a weakly interacted cluster-like domain in the yellow phase. The domain was considered to be elaborated by inter-molecular hydrogen bondings formed newly through a thermal break of intra-molecular hydrogen bondings between side chains along a main chain. On the other hand, the increases in Rh and D have revealed that poly(4BCMU) chains aggregated gradually in the red phase, after taking a single extended rod-like conformation. The subsequent aggregation seemed to be promoted not only by lowering a solvent quality but also by increasing the effective concentration, accompanied by the conformational transition.

    本文言語English
    ページ(範囲)5993-6001
    ページ数9
    ジャーナルPolymer
    40
    22
    DOI
    出版ステータスPublished - 1999 10

    ASJC Scopus subject areas

    • 有機化学
    • ポリマーおよびプラスチック
    • 材料化学

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