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- W2330972803 abstract "We report the synthesis and characterization of ruthenium(II)-cored polythiophene dendrimers. Four new redox-active ruthenium(II) pyridine oligothiophene dendritic complexes that fluoresce in the near-infrared region have been synthesized, and their absorption spectra, fluorescence properties, and redox behavior have been investigated. The dendritic ligands phen3T and phen7T containing 1,10-phenanthroline as chelating sites and two oligothiophene dendrons (3T6COMe and 7T6COMe) have been synthesized and employed. The metal–polythiophene dendrimers investigated here are [Ru(bpy)2(phen3T)]2+, [Ru(bpy)2(phen7T)]2+, [Ru(phen3T)3]2+, and [Ru(phen7T)3]2+. Upon addition of acid, the charge transfer absorption bands of free dendritic ligands are significantly red-shifted and the fluorescence is greatly quenched. The Ru(II) polythiophene dendrimers exhibit very strong metal-to-ligand charge transfer (MLCT) absorption and enhanced absorption in the UV region and can be regarded as better light-harvesting species. The MLCT emission is extraordinarily red-shifted (∼165 nm) because of their planar excited states. The core of the dendrimers shows an electrochemical behavior typical of encapsulated metal electroactive units." @default.
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- W2330972803 date "2011-06-22" @default.
- W2330972803 modified "2023-09-28" @default.
- W2330972803 title "Ruthenium(II)-Cored Polythiophene Dendrimers" @default.
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- W2330972803 doi "https://doi.org/10.1021/cm200228p" @default.
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