Realization of both high hydrogen selectivity and capacity in a guest responsive metal–organic framework
作者:Trevor A. Makal、Wenjuan Zhuang、Hong-Cai Zhou
DOI:10.1039/c3ta12761c
日期:——
represents noncoordinated guest molecules, PCN = porous coordination network) with novel structure and gas sorption properties upon activation. PCN-39 undergoes structural transformations upon guest solvent removal, leading to observation of distinct phases from in situ powder X-ray diffraction measurements, and exhibits selective adsorption of H2 (up to 2.0 wt%) over CO, CO2, and N2, which can be
两个新设计的半柔性四位羧酸酯配体5',5''''-(丙烷-2,2-二基)双(2'-甲氧基-[1,1':3',1''-三联苯基] -4,4''-二羧酸酯(pbtd-OMe 4-)和5',5''''-(丙烷-2,2-二基)双(2'-乙氧基-[1,1':3' ,1''-三苯基] -4,4''-二羧酸盐(pbtd-OEt 4-)已用于连接双铜桨轮构建单元,以提供两个同构的金属-有机骨架Cu 2(H 2 O)2(pbtd-OR)· x S(R = Me,PCN-38· x S; R = Et,PCN-39· xS,S代表非配位的客体分子(PCN =多孔配位网络),具有新颖的结构和活化后的气体吸附特性。PCN-39在去除客体溶剂后会发生结构转变,从而导致从原位粉末X射线衍射测量中观察到不同的相,并表现出H 2(最高达2.0 wt%)在CO,CO 2和N 2上的选择性吸附,这可以通过优化乙氧基侧基的空间