Pillar[5]arene-based supramolecular polypseudorotaxanes constructed from quadruple hydrogen bonding

Novel linear supramolecular polypseudorotaxanes constructed from bifunctional ureidopyrimidinone (UPy) pillar[5]arene as the wheel and alkyl diamine as the axle were successfully prepared. This supramolecular polymer was stabilized by the combination of two different non-covalent interactions: quadruple hydrogen bonding and pillararene-based host-guest interactions.