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Engineering Void Space Enclosed within Resorcin[4]arene-Based Supramolecular Frameworks

机译:基于间苯二酚[4]芳烃的超分子框架内的工程空隙空间

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摘要

A family of hydrogen-bonded supramolecular frameworks based on C-alkylresorcinol[4]arene (RsC) and 4,4′-bipyridine (bpy) type spacers are described in this article. The size and shape of the void space enclosed within these frameworks are engineered by varying the type of solvent (acetonitrile and ethanol), spacer molecules (4,4′-bipyridine (bpy), trans-1,2-bis(4-pyridyl)ethylene (bpe), 1,2-bis(4-pyridyl)acetylene (bpa)), and the conformations and/or type of RsC bowl (boat vs cone or Cmethylresorcin[4]arene/RsC1 vs C-propylresorcin[4]arene/RsC3). A change in the solvent system from acetonitrile to ethanol brings about a conformational change with the RsC1 macrocycle and also results in the distinct orientation of spacer molecules around the RsC macrocycle. The predominant feature in all of the frameworks is the O-H???N intermolecular interaction between RsC building blocks and bipyridine-type spacers. The resultant solvent-filled void spaces available within frameworks can be controlled by manipulating the parameters investigated in this study.
机译:本文介绍了基于C-烷基间苯二酚[4]芳烃(RsC)和4,4'-联吡啶(bpy)型间隔基的氢键超分子骨架家族。通过改变溶剂(乙腈和乙醇),间隔分子(4,4'-联吡啶(bpy),反式1,2-双(4-吡啶基))的类型来设计包围在这些框架中的空隙空间的大小和形状)乙烯(bpe),1,2-双(4-吡啶基)乙炔(bpa))以及RsC碗的结构和/或类型(船形vs锥形或Cmethylresorcin [4] arene / RsC1 vs C-丙基间苯二酚[4] ] arene / RsC3)。溶剂系统从乙腈到乙醇的变化会导致RsC1大环的构象变化,并且还会导致RsC大环周围的间隔分子发生不同的取向。在所有框架中的主要特征是RsC结构单元和联吡啶型间隔基之间的O-H-N分子间相互作用。可以通过操纵本研究中研究的参数来控制在框架内可用的溶剂填充的空隙空间。

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