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Soluble and rigid terpyridine-based ditopic ligands bearing one to five phenylene/ethynylene modules have been synthesized by way of a stepwise procedure. Each module is attached to the terpyridine unit via an ethynylene fragment and functionalized at the 4-position with an additional ethynylene connector and in the 2,5-positions with two flexible(More)
By introduction of a naphthalene subunit in the middle of a butadiynylene spacer the triplet lifetime of the ruthenium chromophore in RR is prolongated to 475 ns. By increasing laser intensities the two Ru-terpy terminals are simultaneously promoted to the triplet state, and triplet - triplet annihilation occurs. In contrast, in the mixed Ru/Os complex (RO)(More)
Reliable and practical routes for the preparation of segmented oligomeric 2,2'-bipyridine-based ligands possessing rigid and conjugated spacers are presented. The first series of ligands bears a single alkyne function as a bridge and has been built by Pd(0)-catalyzed cross-coupling reactions between ethynylated and bromo-substituted derivatives of(More)
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