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Two charged donor-acceptor [2]catenanes were synthesized by the cyclization of the π-acceptor 1,1′-[1, 4-phenylenebis-(methylene)]bis(4,4′-bipyridinium)bis(hexafluorophosphate)(2) and bis(bromomethyl)benzene with the templates of the π-donor phenylene-diacetylene crown ethers 1a and 1b in the yields of 31%, 35%, respectively. The mass spectra, 1H and 13C NMR spectra confirm that the phenylene-diacetylene...