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首页> 外文期刊>Journal of Applied Polymer Science >Energy transfer and photoactivity of photozymes included in polyacrylate hydrogels
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Energy transfer and photoactivity of photozymes included in polyacrylate hydrogels

机译：聚丙烯酸酯水凝胶中包含的光酶的能量转移和光活性

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摘要

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.
机译：合成了两种光酶聚（乙烯基萘/苯乙烯磺酸钠）（PZ1）和聚（乙烯基萘/苯乙烯磺酸钠/ N，N'-二甲基甲基丙烯酰氧基乙基丙烷磺酸钠）（PZ2），并将其用于水凝胶的改性。水凝胶由丙烯酰胺和2-丙烯酰胺基-2-甲基丙烷磺酸单体组成，并经膨润土钠（NB）改性。检查了光酶的荧光性质和光活性。两种光酶均在水溶液和水凝胶基质中均表现出高度的自组装性，这对于天线效应至关重要。对于NB增强的水凝胶，观察到了从激发的生色团到NB的强大能量转移，并赋予了粘土高的表面电导率。与PZ1相比，PZ2对亚甲基蓝（MB）的光降解表现出更高的光催化活性。这很可能是由于两性离子PZ2具有更好的自组装性，因此增强了天线效应。由水凝胶从水溶液吸收的MB在光酶催化的光化学过程中被有效地分解。

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