Synthesis of π-conjugated porous polymers via direct arylation of fluoroarenes with three-arm triazine
Synthesis of π-conjugated porous polymers via direct arylation of fluoroarenes with three-arm triazine
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DOI：
10.1016/j.polymer.2015.11.056
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发表时间：
2016-05-04
期刊：
影响因子：
4.6
通讯作者：
Koizumi, Toshio
中科院分区：
文献类型：
--
作者：
Hayashi, Shotaro;Togawa, Yuki;Koizumi, Toshio
本文以2，4，6-三（4-溴苯基）-1，3，5-三嗪为原料，通过直接芳基化反应合成了π共轭微孔聚合物（CMP）。1，2，4，5-四氟苯和1，3，5-三氟苯分别是形成网络的良好单体，即CMP 1和CMP 2。通过高性能固态C-13和F-19 CP/MAS NMR光谱成功地实现了不溶性材料的表征。信号出现在芳香区。在CMP 1的C-13 NMR谱中未观察到端基信号，但CMP 2显示三氟苯单元的未反应C-H信号。CMP 2显示出比CMP 1更高的Brunauer-Emmett-Teller（BET）表面积。分支的数量控制（或定制）聚合物网络的孔隙率。该聚合物具有微孔性和CO2捕集能力。在1.0 bar下，CMP 2的CO2捕集能力（16.75 cm（3）g（-1））高于CMP 1（11.49 cm（3）g（-1））。(C)2016爱思唯尔有限公司版权所有
We have successfully synthesized pi-conjugated microporous polymers (CMPs) via direct arylation of fluoroarenes with 2,4,6-tris(4-bromophenyl)-1,3,5-triazine. Both 1,2,4,5-tetrafluorobenzene and 1,3,5-trifluorobenzene were good monomers to give the networks, CMP1 and CMP2, respectively. Characterization of the insoluble materials was successfully achieved by high performance solid-state C-13 and F-19 CP/MAS NMR spectroscopy. The signals appeared in the aromatic region. No end group signals were observed in the C-13 NMR spectrum of CMP1, but CMP2 showed the unreacted C-H signal of the trifluorobenzene unit. CMP2 showed higher Brunauer-Emmett-Teller (BET) surface area than CMP1. The number of branch controlled (or tailored) the porosity of the polymer networks. The polymers have microporocity with CO2 capture capacity. The CO2 capture capacity of CMP2 (16.75 cm(3) g(-1)) was higher than that of CMP1 (11.49 cm(3) g(-1)) at 1.0 bar. (C) 2016 Elsevier Ltd. All rights reserved.