Fine-tuning optimal porous coordination polymers using functional alkyl groups for CH4 purification
Fine-tuning optimal porous coordination polymers using functional alkyl groups for CH4 purification
复制标题
使用烷基官能团微调最佳多孔配位聚合物进行 CH4 纯化
DOI：
10.1039/c7ta02760e
复制
发表时间：
2017-09-14
影响因子：
11.9
通讯作者：
Kitagawa, Susumu
中科院分区：
文献类型：
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作者：
Cheng, Fujun;Li, Qianqian;Kitagawa, Susumu
纳米多孔配位聚合物（Nano-porous Coordinate Polymers，Nano-PCPs）作为一类新型的晶体材料，由于其功能孔环境的易调控性，已成为配位化学研究的热点。然而，阐明合理设计和制备具有各种综合性能的纳米PCP用于可行的气体分离的途径仍然是一个巨大的挑战。在这里，我们展示了一种新的路线，以实现与集成的孔系统和物理特性，使用网状化学策略的纳米PCPs。通过优化通道中最短的两个烷基的位置和长度，在PCP中观察到前所未有的改善表面积、气体吸收、气体选择性、热稳定性和化学稳定性的现象，特别是在具有侧基乙基的结构NTU-14中。此外，基于吸附和膜的分离的高性能使得NTU-14成为在室温下从混合物中纯化CH 4的有前途的介质。
Nano-porous coordination polymers (nano-PCPs), as a new class of crystalline material, have become a lucrative topic in coordination chemistry due to the facile tunability of their functional pore environments. However, elucidating the pathways for the rational design and preparation of nano-PCPs with various integrated properties for feasible gas separation remains a great challenge. Here, we demonstrate a new route to achieve nano-PCPs with an integrated pore system and physical properties using a reticular chemistry strategy. By optimizing the position and length of the shortest two alkyl groups in the channels, unprecedented phenomena of improved surface area, gas uptake, gas selectivity, thermal stability and chemical stability were observed in the PCPs, especially in NTU-14, the structure with a pendant ethyl group. Furthermore, the high performance of adsorption- and membrane-based separation makes NTU-14 a promising medium for CH4 purification from a mixture at room temperature.