Synthesis, structural characterization, and photophysical, spectroelectrochemical, and anion-sensing studies of heteroleptic ruthenium(II) complexes derived from 4'-polyaromatic-substituted terpyridine derivatives and 2,6-bis(benzimidazol-2-yl)pyridine.

@article{Maity2013SynthesisSC,
  title={Synthesis, structural characterization, and photophysical, spectroelectrochemical, and anion-sensing studies of heteroleptic ruthenium(II) complexes derived from 4'-polyaromatic-substituted terpyridine derivatives and 2,6-bis(benzimidazol-2-yl)pyridine.},
  author={Dinesh Maity and Shyamal Das and Sourav Mardanya and Sujoy Baitalik},
  journal={Inorganic chemistry},
  year={2013},
  volume={52 12},
  pages={
          6820-38
        }
}
Heteroleptic bis-tridentate ruthenium(II) complexes of composition [(H2pbbzim)Ru(tpy-Ar)](ClO4)2, where H2pbbzim = 2,6-bis(benzimidazol-2-yl)pyridine and tpy-Ar = 4'-substituted terpyridine ligands with Ar = phenyl (2), 2-naphthyl (3), 9-anthryl (4), and 1-pyrenyl (5) groups, have been synthesized and characterized by using standard analytical and spectroscopic techniques. The X-ray crystal structures of the complexes [(H2pbbzim)Ru(tpy-Naph)](ClO4)2 (3), [(pbbzim)Ru(tpy-Naph)]·(CH3)2CO·H2O (3a… Expand
Synthesis, characterization and theoretical studies of the heteroleptic Ruthenium(II) complexes of 2,6-bis(benzimidazolyl)pyridine
Abstract Four new Ruthenium(II) complexes [Ru(bbp)(pyterpy)](PF6)2 (1), [Ru(bbp)(bip)Cl]PF6 (2), [Ru(bbp)(biq)Cl]PF6 (3) and [Ru(bbp)(phen)Cl]PF6 (4) have been synthesized and characterized byExpand
Ru(II) and Os(II) complexes based on terpyridyl-imidazole ligand rigidly linked to pyrene: synthesis, structure, photophysics, electrochemistry, and anion-sensing studies.
TLDR
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TLDR
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Single-crystal X-ray structural analysis confirms the first example of dihydrogen pyrophosphate (H2P2O7(2-)) recognition via solitary C-H···anion interactions and high selectivity of 1[PF6]2 toward these two anions in acetonitrile. Expand
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Interestingly, the present bimetallic complexes exhibit moderately strong luminescence in the range between 657 and 703 nm and lifetimes (long component) between 5.8 and 67.0 ns at room temperature showing the dependence of the emission characteristics upon the type of terminal ligand and solvent. Expand
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Both complexes possess a very high selectivity towards cyanide ions in aqueous media in the presence of an excess of other anions and display a visual detection of cyanide ion detection with a very low detection limit. Expand
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Synthesis, characterization, photophysical, and anion-binding studies of luminescent heteroleptic bis-tridentate ruthenium(II) complexes based on 2,6-bis(benzimidazole-2-yl)pyridine and 4'-substituted 2,2':6',2'' terpyridine derivatives.
TLDR
The absorption spectra, redox behavior, and luminescence properties of the ruthenium(II) complexes have been thoroughly investigated, and it has been observed that the metalloreceptors act as sensors for F(-, AcO(-), and to some extent H(2)PO(4)(-). Expand
Synthesis, structural characterization, photophysical, electrochemical, and anion-sensing studies of luminescent homo- and heteroleptic ruthenium(II) and osmium(II) complexes based on terpyridyl-imidazole ligand.
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It is evident that in the presence of excess of anions deprotonation of the imidazole N-H fragment(s) occurs in all cases, an event which is signaled by the development of vivid colors visible with the naked eye. Expand
Monometallic and bimetallic ruthenium(II) complexes derived from 4,5-bis(benzimidazol-2-yl)imidazole (H3Imbzim) and 2,2'-bipyridine as colorimetric sensors for anions: synthesis, characterization, and binding studies.
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Cyclic voltammetry studies carried out in acetonitrile provided evidence of an anion-dependent electrochemical response with F(-) and AcO(-), and made complex 2 a suitable lifetime-based sensor for anions. Expand
Structural characterization and spectroelectrochemical, anion sensing and solvent dependence photophysical studies of a bimetallic Ru(II) complex derived from 1,3-di(1H-imidazo[4,5-f][1,10]phenanthroline-2-yl)benzene.
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The anion sensing properties of the receptor were thoroughly investigated in acetonitrile solution using absorption, steady state and time-resolved emission spectroscopic studies and revealed that the receptor acts as sensor for F(-, AcO(-) and H(2)PO(4)(-). Expand
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Cyclic voltammetry measurements carried out in acetonitrile have provided evidence in favor of anion-dependent electrochemical responses of the bimetallic metalloreceptors with F(-) and AcO(-) ions. Expand
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These compounds were designed to increase the room temperature excited-state lifetimes of bisterpyridine-type ruthenium(II) and osmium( II) complexes and show that both the compounds crystallized in orthorhombic form with space group Fddd. Expand
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TLDR
The photophysical properties of these species are significantly better compared to those of [Ru(tpy)2]2+ and well comparable with those of the best emitters of Ru(II) polypyridine family containing tridentate ligands. Expand
Marked differences in light-switch behavior of Ru(II) complexes possessing a tridentate DNA intercalating ligand.
TLDR
The tridentate ligand 3-(pyrid-2'-yl)dipyrido[3,2-a:2',3'-c]phenazine (pydppz) has been prepared in two steps by elaboration of 1,10-phenanthroline and the absorption and emission spectra are consistent with low-lying MLCT excited states, which are typical of Ru(II) complexes. Expand
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