title: Syntheses of copillar[5]arenes by co-oligomerization of different monomers.
abstract: Three copillar[5]arenes, pillar[5]arenes containing different repeating units, were successfully prepared by co-oligomerization of different monomers. It was demonstrated that the yields of pillararenes could be improved by using hydroquinone diethers with appropriate aliphatic chain lengths. Pseudorotaxane-type threaded structures were obtained in the solid state by the inclusion of an n-hexane molecule into the cavity of either a homopillar[5]arene, a pillar[5]arene containing only one repeating unit, or a copillar[5]arene.
authors.affiliation: Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China.
authors.forename: Zibin
authors.initials: Z
authors.lastname: Zhang
authors.forename: Binyuan
authors.initials: B
authors.lastname: Xia
authors.forename: Chengyou
authors.initials: C
authors.lastname: Han
authors.forename: Yihua
authors.initials: Y
authors.lastname: Yu
authors.forename: Feihe
authors.initials: F
authors.lastname: Huang