Photoresponsive Nanoporous Smectic Liquid Crystalline Polymer Networks: Changing the Number of Binding Sites and Pore Dimensions in Polymer Adsorbents by Light
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- 作者：Huub P. C. van Kuringen ; Zino J. W. A. Leijten ; Anne H茅l猫ne Gelebart ; Dirk J. Mulder ; Giuseppe Portale ; Dirk J. Broer ; Albertus P. H. J. Schenning
- 刊名：Macromolecules
- 出版年：2015
- 出版时间：June 23, 2015
- 年：2015
- 卷：48
- 期：12
- 页码：4073-4080
- 全文大小：462K
- ISSN：1520-5835
文摘
Photoresponsive nanoporous polymer films have been fabricated by adding a photoresponsive azobenzene cross-linker to a hydrogen-bonded smectic liquid crystalline polymer network. A base treatment resulted in the nanoporous material which has been fully characterized. Upon exposure to UV light a decrease in the smectic layer spacing is observed, suggesting a decrease in pore size. In addition, the binding sites in the material could be changed with light, leading to light-induced adsorption of cations and cationic dyes. Finally, light could also be used to create nanoporous channels in the polymer film.