Light-Switchable Polymers of Intrinsic Microporosity
详细信息 查看全文
- 作者：Daniel Becker ; Nora Konnertz ; Martin Böhning ; Johannes Schmidt ; Arne Thomas
- 刊名：Chemistry of Materials
- 出版年：2016
- 出版时间：December 13, 2016
- 年：2016
- 卷：28
- 期：23
- 页码：8523-8529
- 全文大小：382K
- ISSN：1520-5002
文摘
The interest in (micro)porous systems is greater than ever before with microporous polymers finding application in areas such as gas storage/separation and catalysis. In contrast to the vast majority of publications on microporous polymers seeking ever higher values for surface area or uptake capacity for a particular gas, this work presents a means to render a microporous system responsive to electromagnetic stimuli. The incorporation of a diarylethene (DAE) derivative in the backbone of a polymer of intrinsic microporosity (PIM) produces a microporous system that exhibits photochromism as proven by UV–vis absorption and NMR studies. In the resulting DAE-PIM, surface area is not a fixed unalterable property but can be influenced by the external and nondestructive stimulus light in a reversible manner. Furthermore, in combination with Matrimid, free-standing membranes can be produced that display light-switchable diffusivity and permeability for carbon dioxide and oxygen. In this way, material scientists are offered the potential to employ only one system that can assume several states with different properties for each.