The first directed syntheses of unsymmetrically 6,6′-functionalized 2,2′-bypyridine building blocks and a general synthetic strategy to higher generations of functionalized oligo(bipy) units are described; a block copolymer containing a bis(bipy) unit is prepared and complexed with copper(I) ions to obtain a supramolecular aggregate.
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Eisenbach et al. (1995) studied this question.
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