Triptycene based 1,2,3-triazole linked network polymers (TNPs): small gas storage and selective CO2 capture
Triptycene based 1,2,3-triazole linked network polymers (TNPs): small gas storage and selective CO2 capture
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DOI：
10.1039/c5ta06939d
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发表时间：
2015-01-01
影响因子：
11.9
通讯作者：
Das, Neeladri
中科院分区：
文献类型：
--
作者：
Mondal, Snehasish;Das, Neeladri
本文描述了四种高收率的三唑连接网络聚合物（TNPs）的简单合成和表征。这些富氮聚合物是由2,6,14-三叠氮三烯和各种二乙基或三乙基共聚物之间的咔嗒反应得到的。TNPs是微孔的，具有高表面积(SABET高达1348 m（2) g(-1)）。由于含有1,2,3-三唑基序（一个亲二氧化碳的部分），TNPs记录了中高的二氧化碳吸收（在273 K和1 bar下高达4.45 mmol g(-1)）。TNPs还表现出良好的CO2/N-2选择性（高达48）和CO2/CH4选择性（高达89）。在273 K和1 bar条件下，TNP4的储存容量最高(CO2为4.45 mmol g(-1)， CH4为23.8 mg g(-1)， H-2为1.8 wt%)，而TNP3的CO2/N-2和CO2/CH4选择性最高，因为TNP3含有额外的富氮结构单元，以杂芳香吡嗪环的形式存在。这些结果表明，TNPs是一种多孔材料，在气体储存和分离方面具有潜在的实际应用前景。
Herein, facile synthesis and characterization of four triazole linked network polymers (TNPs) in high yields is described. These nitrogen rich polymers are derived using a click reaction between 2,6,14-triazido triptycene and various di- or triethynyl comonomers. The TNPs are microporous and exhibit high surface area (SABET up to 1348 m(2) g(-1)). Due to the incorporation of the 1,2,3-triazole motif (a CO2-philic moiety), the TNPs record moderate to high CO2 uptake (up to 4.45 mmol g(-1) at 273 K and 1 bar). The TNPs also show very good CO2/N-2 (up to 48) and CO2/CH4 (89) selectivity. While the highest storage capacity has been registered by TNP4 (CO2 4.45 mmol g(-1) at 273 K and 1 bar, CH4 23.8 mg g(-1), H-2 1.8 wt%), the highest CO2/N-2 and CO2/CH4 selectivity is shown by TNP3 which contains additional nitrogen rich building blocks in the form of heteroaromatic pyrazine rings. These results suggest that TNPs are porous materials with potential practical application in gas storage and separation.