Chain-Growth Copolymerization of Functionalized Ethynylarenes With 1,4-Diethynylbenzene and 4,4 ́-Diethynylbiphenyl Into Conjugated Porous Networks

0443306 - ÚFCH JH 2016 RIV GB eng J - Journal Article
Stahlová, S. - Slováková, E. - Vaňkátová, P. - Zukal, Arnošt - Kubů, Martin - Brus, Jiří - Bondarev, D. - Moučka, R. - Sedláček, J.
Chain-Growth Copolymerization of Functionalized Ethynylarenes With 1,4-Diethynylbenzene and 4,4 ́-Diethynylbiphenyl Into Conjugated Porous Networks.
European Polymer Journal. Roč. 67, JUN 2015 (2015), s. 252-263. ISSN 0014-3057. E-ISSN 1873-1945
R&D Projects: GA ČR(CZ) GA15-01897S
Institutional support: RVO:61388955 ; RVO:61389013
Keywords : Polyacetylenes * Diethynylbenzene * Diethynylbiphenyl
Subject RIV: CF - Physical ; Theoretical Chemistry; CD - Macromolecular Chemistry (UMCH-V)
Impact factor: 3.485, year: 2015

We report the synthesis of conjugated highly cross-linked polyacetylene-type networks with a high content of functional groups (-CH 2 OH, -NO 2 , -Ph 2 N, content up to 3.9 mmol/g) via a chain-growth copolymerization of either 1,4-diethynylbenzene or 4,4 ́- diethynylbiphenyl with functionalized mono- an d diethynylbenzenes. The backbone of the networks consists of substituted polyene main chains that are cross-linked by arylene links. The optimised combinations of comonomers in the feed provide functionalized networks with a Brunauer-Emmett-Teller specifi c surface area up to 667 m 2 /g and enhanced affinity for CO 2 adsorption (compared to the non-functionalized hy drocarbon networks of the same type). The dependence of the specific surface area of the networks on the size and architecture of the comonomers used for the synthesis is discussed in the paper. The reported networks can be classified into the group of conjugated micropo rous polymers (CMPs). Contrary to the CMPs synthesized by step-growth co uplings, significantly lower average comonomer functionality in the feed ( f = 1.5 - 2.0) is sufficient for the high sp ecific surface area to be achieved in the reported polyacetylene-type CMPs.
Permanent Link: http://hdl.handle.net/11104/0246998