A [2]pseudorotaxane is formed from a ZnII-phthalocyanine with polyether substituents containing π-electron rich hydroquinone segments and a cyclobis(paraquat-p-phenylene) tetracation containing π-electron-deficient bipyridinium units; fluorescence quenching of the ZnII-phthalocyanine is enhanced dramatically in acetonitrile.
M. Kimura, Y. Misawa, Y. Yamaguchi, K. Hanabusa and H. Shirai, Chem. Commun., 1996, 2785 DOI: 10.1039/CC9960002785
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