A linear porphyrin-based tecton bearing two 4,4$\prime$bipyridinium units (viologens) and two monomethyl-ether triethylene glycol-substituted phenyl substituents at the meso positions was synthesized and characterized. The latter was involved in the redox-triggered formation of linear supramolecular assemblies with cucurbit[8]uril (CB[8]) cavitands in aqueous media. The CB[8]-promoted intermolecular $\pi$-dimerization of the viologen cation radicals introduced at the meso positions of the porphyrin platform has been brought to light through the diagnostic signatures of the 1:2 host-guest ternary caviplexes formed between viologen and CB[8] and by spectroscopic data collected after electrochemical reduction of the viologen-based tectons.

带有两个 4,4 的线性卟啉构造$\prime$合成并表征了联吡啶鎓单元（紫精）和中间位置的两个单甲醚三甘醇取代的苯基取代基。后者参与水介质中氧化还原触发的葫芦[8]脲（CB[8]）空配体线性超分子组装体的形成。CB[8]促进的分子间$\pi$-通过紫精和CB[8]之间形成的1:2主客体三元腔复合体的诊断特征以及电化学后收集的光谱数据，在卟啉平台的内消旋位置引入的紫精阳离子自由基的二聚化已被揭示基于紫精的构造的减少。