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Energy transfer and photoactivity of photozymes included in polyacrylate hydrogels

Authors

  • L. Sorochynska,

    Corresponding author
    1. Department of Materials Science, Institute for Composite Materials, TU Kaiserslautern, D-67663 Kaiserslautern, Germany
    • Department of Materials Science, Institute for Composite Materials, TU Kaiserslautern, D-67663 Kaiserslautern, Germany
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  • S. Grishchuk,

    1. Department of Materials Science, Institute for Composite Materials, TU Kaiserslautern, D-67663 Kaiserslautern, Germany
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  • S. Korres,

    1. Karlsruhe Institute of Technology, Institute of Applied Materials–Reliability of Components and Systems (IAM ZBS), D-76131 Karlsruhe, Germany
    2. Fraunhofer-Institute for Mechanics of Materials (IWM), D-79108 Freiburg, Germany
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  • C. Riehn,

    1. Department of Physical Chemistry, Chemical Faculty, TU Kaiserslautern, D-67663 Kaiserslautern, Germany
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  • G. Niedner-Schatteburg,

    1. Department of Physical Chemistry, Chemical Faculty, TU Kaiserslautern, D-67663 Kaiserslautern, Germany
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  • V. Georgieva,

    1. Laboratory of Water-soluble Polymers, Polyelectrolites and Biopolymers, Chemical Faculty, University of Sofia, 1164 Sofia, Bulgaria
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  • G. Georgiev,

    1. Laboratory of Water-soluble Polymers, Polyelectrolites and Biopolymers, Chemical Faculty, University of Sofia, 1164 Sofia, Bulgaria
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  • J. Karger-Kocsis

    1. Department of Polymer Technology, Faculty of Engineering and the Built Environment, Tshwane University of Technology, Pretoria 0001, Republic of South Africa
    2. Department of Polymer Engineering, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, H-1111 Budapest, Hungary
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Abstract

Two photozymes poly(vinylnaphthalene/sodium styrenesulfonate) (PZ1) and poly(vinylnaphthalene/sodium styrenesulfonate/N,N′-dimethyl methacryloyloxyethyl propanesulfonate) (PZ2) were synthesized and used for the modification of hydrogels. The hydrogels were composed of acrylamide and 2-acrylamido-2-methylpropanesulfonic acid monomers, and modified with sodium bentonite (NB). The fluorescence properties and photoactivity of the photozymes were examined. Both photozymes demonstrated high self-assembly in both aqueous solutions and hydrogel matrices, which is of great importance for the antenna effect. For the NB-reinforced hydrogel, strong energy transfer from the excited chromophores to the NB was observed and assigned to the high surface conductivity of clay. PZ2 exhibited higher photocatalytic activity for the methylene blue (MB) photodegradation than PZ1. This is most likely due to the better self-assembly and thus enhanced antenna effect of the zwitterionic PZ2. MB absorbed by the hydrogel from aqueous solution was efficiently decomposed in a photozyme-catalyzed photochemical process. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012

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