Well‐defined supramolecular helical nanofibers have been constructed by a rationally designed achiral monomer in aqueous solution based on the 1:2 host–guest combination between cucurbit[8]uril and a 4,4′‐bipyridin‐1‐ium chloride (BPY + ) salt derivative. The formed nanostructures could be adjusted by varying the concentration of monomer from helical nanofibers to a pH‐responsive hydrogel.
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Wang et al. (2017) studied this question.
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