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An unprecedented porphyrin-pillar[5]arene hybrid ditopic receptor

机译:前所未有的卟啉-柱[5]芳烃杂种双位受体

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摘要

A novel porphyrin-pillar[5] arene host compound ZnPor-P5 was designed and prepared for the first time. A 1 : 1 supramolecular complex (ZnPor-P5).C4 was formed with the neutral guest 1,4-bis(imidazol-1-yl)butane (C4) depending on the cooperative interactions between the coordination of the zinc ion locating at the center of the porphyrin moiety and the inclusion complexation of the pillar[5] arene cavity with the guest molecule according to a range of NMR, mass, electronic absorption, and fluorescence spectroscopic results in addition to ITC, demonstrating the ditopic receptor nature of this porphyrinpillar[5] arene hybrid compound. The addition of CdI2 into (ZnPor-P5).C4 in chloroform induced the dissociation of the guest molecule from the zinc ion locating at the center of the porphyrin moiety due to the stronger coordination of imidazole with Cd2+ than with the zinc ion, yielding a new supramolecular system ZnPor-(P5).C4.Cd with a different conformation.
机译:首次设计并制备了新型卟啉-立柱[5]芳烃宿主化合物ZnPor-P5。 1:1的超分子络合物(ZnPor-P5).C4与中性客体1,4-双(咪唑-1-基)丁烷(C4)形成,具体取决于位于锌离子上的锌离子的配位之间的协同相互作用。卟啉部分的中心和柱子[5]芳烃腔与客体分子根据ITC之外的一系列NMR,质量,电子吸收和荧光光谱结果的包合配合物,证明了该卟啉柱的对位受体性质[5]芳烃杂化化合物。将CdI2添加到(ZnPor-P5).C4的氯仿中会导致客体分子从位于卟啉部分中心的锌离子解离,因为咪唑与Cd2 +的配位比与锌离子的配位更强,具有不同构象的新超分子系统ZnPor-(P5).C4.Cd。

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