Abstract：
We designed and synthesized a ureido-linked zinc bisporphyrinate [Zn2(UBis)]. CD spectra show that this zinc bisporphyrinate has the ability to sense the chirality of chiral carboxylic acids without derivatization. Our studies suggest that the phenyl ring in the linker forms π-π interactions with porphyrin planes and that the carboxylic acid is coordinated to the zinc in the host-guest complex. DFT calculations show that the bisporphyrin adopts a \"Z\"-shaped configuration, and that the ureido group forms hydrogen bonds with carboxylic acids. The combination of π-π interactions, coordination interactions and hydrogen bonding interactions leads to the chirality sensing ability of [Zn2(UBis)].
摘要：
我们设计并合成了脲基连接的双卟啉锌[Zn2（UBis）]。CD光谱显示该双卟啉锌具有在没有衍生化的情况下感测手性羧酸的手性的能力。我们的研究表明，接头中的苯环与卟啉平面形成π-π相互作用，并且羧酸与主-客体络合物中的锌配位。DFT计算表明，双卟啉采用“Z”形构型，脲基与羧酸形成氢键。π-π相互作用的组合，配位相互作用和氢键相互作用导致[Zn2（UBis）]的手性传感能力。
