A series of heteroleptic bis(tridentate) ruthenium(II) complexes featuring 1,2,3-triazole-, 1,2,3-triazolylidene-, or 1,2,3-triazolate-containing ligands is presented. The new ligand platforms are readily and modularly functionalized by making use of azide-alkyne cycloaddition reactions. The bis(tridentate) ruthenium(II) complexes of mesoionic carbene ligands exhibit very long excited-state lifetimes suggesting potential applications in photoredox-catalysis, while the ruthenium(II) complexes bearing anionic chelates feature suitable electronic properties for application in dye-sensitized solar cells. The latter was confirmed by achieving power-conversion efficiencies that approach those obtained with thiocyanate-based ruthenium(II) complexes. Additionally, the anodic electropolymerization of thiophene-equipped N^C^N-cyclometalated ruthenium(II) complexes is demonstrated.

Beyond click chemistry: Ruthenium(II) complexes of tridentate ligands featuring 1,2,3-triazole-derived donors

248th National Meeting (2014)

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