Synthetic control of the pore dimension and surface area in conjugated microporous polymer and copolymer networks.
A series of rigid microporous poly(aryleneethynylene) (PAE) networks was synthesized by Sonogashira-Hagihara coupling chemistry. PAEs with apparent Brunauer-Emmet-Teller surface areas of more than 1000 m(2)/g were produced. The materials were found to have very good chemical and thermal stability and retention of microporosity under a variety of conditions. It was shown that physical properties such as micropore size, surface area, and hydrogen uptake could be controlled in a "quantized" fashion by varying the monomer strut length, as for metal-organic and covalent organic frameworks, even though the networks were amorphous in nature. For the first time, it was demonstrated that these properties can also be fine-tuned in a continuous manner via statistical copolymerization of monomer struts with differing lengths. This provides an unprecedented degree of direct synthetic control over micropore properties in an organic network.
Jiang
Jia-Xing
JX
Department of Chemistry and Centre for Materials Discovery, University of Liverpool, Liverpool L69 3BX, United Kingdom.
Su
Fabing
F
Trewin
Abbie
A
Wood
Colin D
CD
Niu
Hongjun
H
Jones
James T A
JT
Khimyak
Yaroslav Z
YZ
Cooper
Andrew I
AI