Photochromic Solid Materials Based on Poly(decylviologen) Complexed with Alginate and Poly(sodium 4-styrenesulfonate)

Luis Sanhueza, Joaquín Castro, Esteban Urzúa, Lorena Barrientos, Felipe Oyarzun-Ampuero, Héctor Pesenti, Toshimichi Shibue, Natsuhiko Sugimura, Wataru Tomita, Hiroyuki Nishide, Ignacio Moreno-Villoslada

    研究成果: Article査読

    11 被引用数 (Scopus)

    抄録

    Photochromic solid materials based on the cationic polymer poly(decylviologen) are reported. The solids were obtained by freeze-drying colloidal suspensions of nanocomplexes obtained by mixing aqueous solutions of the polycation with different solutions of polyanions such as poly(sodium 4-styrenesulfonate) or sodium alginate, at a cationic/anionic polymeric charge ratio of 0.7. The photochromic responses of the solid materials fabricated with alginate as complementary charged polyelectrolyte of the cationic polyviologen are faster than those of the solid materials fabricated with poly(sodium 4-styrenesulfonate), achieving coloration kinetics in the order of minutes, and discoloration kinetics in the order of hours for the former. Aromatic-aromatic interactions between the latter polyanion and the polyviologen may stabilize the dicationic form of the viologen derivative, increasing the necessary energy to undergo photoreduction, thus decreasing the reduction kinetics.

    本文言語English
    ページ(範囲)13208-13217
    ページ数10
    ジャーナルJournal of Physical Chemistry B
    119
    41
    DOI
    出版ステータスPublished - 2015 10 15

    ASJC Scopus subject areas

    • Physical and Theoretical Chemistry
    • Materials Chemistry
    • Surfaces, Coatings and Films

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