ABSTRACT The interaction between the hemicyanine indole derivative H and the cucubit[n]urils Q[7] and Q[8] has been studied using 1H NMR and UV spectroscopy as well as by fluorescence experiments. Competitive studies on the inclusion of H by Q[7] and Q[8] have also been conducted, and reveal that on changing the size of the Q[n] cavity, the binding behaviour can be very different. Graphical abstract The interaction between the hemicyanine shown and the cucubit[n]uril (n=7, 8) has been studied. Changes in the size of the Q[n] cavity result in differing binding behaviour. The affinity for different parts of the guest changes depending on the amount of Q[8] present, whereas for variation in the amounts of Q[7] no changes were observed.

中文翻译：

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半花青和葫芦[n]uril包合物：葫芦[7]uril和葫芦[8]uril的竞争性客体结合

摘要 使用 1H NMR 和 UV 光谱以及荧光实验研究了半花青吲哚衍生物 H 与cucubit[n]urils Q[7] 和 Q[8] 之间的相互作用。还进行了关于 Q[7] 和 Q[8] 包含 H 的竞争性研究，并表明在改变 Q[n] 腔的大小时，结合行为可能会有很大不同。图形摘要 研究了显示的半花青素和 cucubit[n]uril (n=7, 8) 之间的相互作用。Q[n] 腔尺寸的变化会导致不同的结合行为。客体不同部分的亲和力取决于 Q[8] 存在的数量，而 Q[7] 数量的变化没有观察到变化。