In situ photopolymerization of pyrrole in mesoporous TiO2.
In situ photopolymerization of pyrrole in mesoporous TiO2.
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DOI：
10.1021/la100913e
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发表时间：
2010-03
期刊：
影响因子：
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通讯作者：
N. Strandwitz;Y. Nonoguchi;S. Boettcher;G. Stucky
中科院分区：
文献类型：
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作者：
N. Strandwitz;Y. Nonoguchi;S. Boettcher;G. Stucky
我们研究了介孔TiO（2）作为光敏剂和模板用于制备TiO（2）-聚吡咯杂化材料。光激发介孔TiO（2）产生的电子电位的吡咯单体的氧化和聚合所必需的。通过石英晶体微天平、氮吸附和热重技术监测光聚合过程。聚吡咯的原位生成被观察到在约20-30%的介孔TiO（2）网络填充后是自限制的。通过从活性主体相的电荷转移原位生成互补相代表组装杂化无机-有机材料的替代手段，其具有从电催化到光催化的潜在应用。
We examined mesoporous TiO(2) as a photosensitizer and template for creating hybrid TiO(2)-polypyrrole materials. Optical excitation of mesoporous TiO(2) was used to generate the electronic potential necessary for the oxidation and polymerization of the pyrrole monomer. The photopolymerization process was monitored by the quartz crystal microbalance, nitrogen sorption, and thermogravimetric techniques. In situ generation of polypyrrole was observed to be self-limiting after approximately 20-30% filling of the mesoporous TiO(2) network. In situ generation of a complementary phase by means of charge transfer from an active host phase represents an alternative means of assembling hybrid inorganic-organic materials with potential applications ranging from electrocatalysis to photovoltaics.