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.
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Hu et al. (2012) studied this question.
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