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Building N-Heterocyclic Carbene into Triazine-Linked Polymer for Multiple CO2 Utilization.
ChemSusChem ( IF 7.5 ) Pub Date : 2020-09-22 , DOI: 10.1002/cssc.202002154 Chengtao Yue 1, 2 , Wenlong Wang 3 , Fuwei Li 1
ChemSusChem ( IF 7.5 ) Pub Date : 2020-09-22 , DOI: 10.1002/cssc.202002154 Chengtao Yue 1, 2 , Wenlong Wang 3 , Fuwei Li 1
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The development of new CO2 detection technologies and CO2 “capture‐conversion” materials is of great significance due to the growing environmental crisis. Here, multifunctional triazine‐linked polymers with built‐in N‐heterocyclic carbene (NHC) sites (designated as NHC‐triazine@polymer) are presented for simultaneous CO2 detection, capture, activation, and catalytic conversion. NHC‐triazine@polymer were readily obtained through polymerization of cyanophenyl‐substituted NHC. The obtained film‐like polymers exhibited interesting CO2‐triggered fluorescence “turn‐on” response and CO2‐sensitive reversible color change. Both NHC and triazine sites could act as efficient binding sites for CO2, and the CO2 uptake of NHC and triazine reached 1.52 and 1.36 mmol g−1, respectively. Notably, after being captured by NHC, CO2 was activated into a zwitterionic adduct NHC−CO2 that could be easily transformed into cyclic carbonate in the presence of epoxides. Moreover, NHC‐triazine@polymer were stable and active catalysts for the conversion of low‐concentration CO2 in a gas mixture (7 vol %) into cyclic carbonates as well as for hydrosilylation of CO2 to formamides.
中文翻译：
将N-杂环碳烯构建到三嗪连接的聚合物中以实现多种CO2利用。
由于日益严重的环境危机，新的CO 2检测技术和CO 2 “捕获转化”材料的开发具有重要意义。此处介绍了具有内置N杂环卡宾（NHC）位点的多功能三嗪连接的聚合物（称为NHC-triazine @ polymer），用于同时检测CO 2，捕获，活化和催化转化。通过氰基苯基取代的NHC的聚合很容易获得NHC-triazine @聚合物。获得的膜状聚合物表现出有趣的CO 2触发的荧光“开启”响应和CO 2敏感的可逆颜色变化。NHC和三嗪位点均可充当CO 2的有效结合位点，NHC和三嗪的CO 2吸收分别达到1.52和1.36 mmol g -1。值得注意的是，在被NHC捕获后，CO 2被活化为两性离子加合物NHC-CO 2，在环氧化物的存在下，它很容易转化为环状碳酸酯。此外，NHC-triazine @聚合物是稳定的活性催化剂，可将气体混合物中的低浓度CO 2（7体积％）转化为环状碳酸酯，以及将CO 2氢化硅烷化为甲酰胺。
更新日期：2020-11-21
中文翻译：
将N-杂环碳烯构建到三嗪连接的聚合物中以实现多种CO2利用。
由于日益严重的环境危机，新的CO 2检测技术和CO 2 “捕获转化”材料的开发具有重要意义。此处介绍了具有内置N杂环卡宾（NHC）位点的多功能三嗪连接的聚合物（称为NHC-triazine @ polymer），用于同时检测CO 2，捕获，活化和催化转化。通过氰基苯基取代的NHC的聚合很容易获得NHC-triazine @聚合物。获得的膜状聚合物表现出有趣的CO 2触发的荧光“开启”响应和CO 2敏感的可逆颜色变化。NHC和三嗪位点均可充当CO 2的有效结合位点，NHC和三嗪的CO 2吸收分别达到1.52和1.36 mmol g -1。值得注意的是，在被NHC捕获后，CO 2被活化为两性离子加合物NHC-CO 2，在环氧化物的存在下，它很容易转化为环状碳酸酯。此外，NHC-triazine @聚合物是稳定的活性催化剂，可将气体混合物中的低浓度CO 2（7体积％）转化为环状碳酸酯，以及将CO 2氢化硅烷化为甲酰胺。
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