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Two naphthalene (NP) and bipyridinium (BIPY2+) alternately incorporated polymers P1 and P2 have been prepared through the formation of dynamic hydrazone bonds. The polymers formed NP–BIPY2+ donor–acceptor interaction-induced pleated secondary structure. Upon reducing the BIPY2+ units to radical cation BIPY+, intramolecular dimerization of the BIPY+ units induced the backbones to afford another pleated...
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