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合成了两个含有香豆素单元的紫精衍生物(简称[XDS-3CMV],[XDS-6CMV]).利用1H NMR,ESI-MS,UV-Vis以及荧光光谱分析方法考察了七、八元瓜环CB[n](n=7,8)与客体分子[XDS-3CMV],[XDS-6CMV]之间的相互作用.结果显示,两种客体均可与CB[n](n=7,8)分别形成稳定的包结配合物,烷基链长度以及瓜环空腔尺寸的差异影响主客体相互作用的模式.其中七元瓜环与两种客体分子的紫精部分作用形成1∶1的包结配合物;八元瓜环可以与折叠成U型结构的[XDS-6CMV]分子形成1∶1的包结物,而与[XDS-3CMV]分子则形成超分子聚合物.
Two coumarin-containing derivatives of viologen (XDS-3CMV, [XDS-6CMV]) were synthesized.H NMR, ESI-MS, UV-Vis and fluorescence spectroscopy The interaction between CB [n] (n = 7,8) and guest molecules [XDS-3CMV] and [XDS-6CMV] showed that both of the guest and CB [n] 7,8) formed a stable inclusion complex, the alkyl chain length and melon ring cavity size differences affect the interaction of host-guest mode.Among them melon ring and two guest molecules of the viologen part of the role of the formation of 1 : 1 inclusion complex; octadegaly can be folded into a U-shaped structure [XDS-6CMV] molecules to form a 1: 1 inclusion, and with the [XDS-3CMV] molecules form a supramolecular polymer.