Selective sorption of oxygen and nitric oxide by an electron-donating flexible porous coordination polymer
Selective sorption of oxygen and nitric oxide by an electron-donating flexible porous coordination polymer
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DOI：
10.1038/nchem.684
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发表时间：
2010-06
期刊：
影响因子：
21.8
通讯作者：
S. Shimomura;Masakazu Higuchi;R. Matsuda;Ko Yoneda;Y. Hijikata;Y. Kubota;Y. Mita;Jungeun Kim
中科院分区：
文献类型：
--
作者：
S. Shimomura;Masakazu Higuchi;R. Matsuda;Ko Yoneda;Y. Hijikata;Y. Kubota;Y. Mita;Jungeun Kim
多孔配位聚合物是由金属离子通过有机连接剂桥接在一起形成的材料，并且可以联合收割机结合两种看似矛盾的性质-结晶性和柔性。因此，多孔配位聚合物可以产生高度规则但动态的纳米多孔结构域，其对于吸附应用特别有前途。在这里，我们描述了有效的选择性吸附的分子氧和一氧化氮的结构和电子动态多孔配位聚合物从锌中心和tetracyanoquinodimethane（TCNQ）作为一个链接器。与其它气体分子（C_2H_2、Ar、CO_2、N_2和CO）不同，O_2和NO被容纳在其孔隙中。这种前所未有的偏好来自TCNQ和这些客人之间的电荷转移相互作用的协同效应，以及框架的孔的可切换的门打开和关闭。该系统提供了对小气体分子的有效识别的进一步了解。
Porous coordination polymers are materials formed from metal ions that are bridged together by organic linkers and that can combine two seemingly contradictory properties—crystallinity and flexibility. Porous coordination polymers can therefore create highly regular yet dynamic nanoporous domains that are particularly promising for sorption applications. Here, we describe the effective selective sorption of dioxygen and nitric oxide by a structurally and electronically dynamic porous coordination polymer built from zinc centres and tetracyanoquinodimethane (TCNQ) as a linker. In contrast to a variety of other gas molecules (C2H2, Ar, CO2, N2and CO), O2and NO are accommodated in its pores. This unprecedented preference arises from the concerted effect of the charge-transfer interaction between TCNQ and these guests, and the switchable gate opening and closing of the pores of the framework. This system provides further insight into the efficient recognition of small gas molecules.