Copillararene convoy: A linear supramolecular polymer can be efficiently constructed in solution with a copillararene monomer (see picture). Single-crystal X-ray analysis and NMR spectroscopy revealed that aggregation was enthalpically driven by quadruple CH⋅⋅⋅π interactions between the octyl tail (blue) and the aromatic cavity (red).
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Zhang et al. (2011) studied this question.
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