Multichromophoric bimetallic Ru(II) terpyridine complexes based on pyrenyl-bis-phenylimidazole spacer: synthesis, photophysics, spectroelectrochemistry, and TD-DFT calculations.

@article{Karmakar2014MultichromophoricBR,
  title={Multichromophoric bimetallic Ru(II) terpyridine complexes based on pyrenyl-bis-phenylimidazole spacer: synthesis, photophysics, spectroelectrochemistry, and TD-DFT calculations.},
  author={S. Karmakar and Dinesh Maity and Sourav Mardanya and Sujoy Baitalik},
  journal={Inorganic chemistry},
  year={2014},
  volume={53 22},
  pages={
          12036-49
        }
}
A symmetrical bridging ligand, 5,11-bis(4-([2,2':6',2″-terpyridine]-4'-yl)phenyl)-4,12-dihydropyreno[4,5-d:9,10-d']diimidazole (tpy-H2PhImzPy-tpy), containing terpyridyl coordinating units connected via a pyrenyl-bis-phenylimidazole spacer have been designed to synthesize a new class of light harvesting bimetallic Ru(II) complexes. The electronic properties of this complexes can be fine-tuned by varying tridentate terminal ligands. Full characterization of the compounds has been done with the… Expand
26 Citations
Luminescent Dinuclear Ruthenium Terpyridine Complexes with a Bis-Phenylbenzimidazole Spacer.
TLDR
Computation investigations employing density functional theory (DFT) and time-dependent DFT were done to examine the electronic structures of the complexes and accurate assignment of experimentally observed optical spectral bands. Expand
Pyrene and imidazole functionalized luminescent bimetallic Ru(II) terpyridine complexes as efficient optical chemosensors for cyanide in aqueous, organic and solid media.
We report in this work the anion recognition and sensing aspect of a new family of bimetallic Ru(ii) complexes derived from a symmetrical bridgingExpand
Bimetallic Ru(ii) and Os(ii) complexes based on a pyrene-bisimidazole spacer: synthesis, photophysics, electrochemistry and multisignalling DNA binding studies in the near infrared region.
We report in this paper the synthesis, characterization, photophysical and electrochemical properties, and detailed DNA binding affinities of two homobimetallic Ru(ii) and Os(ii) complexes derivedExpand
Design of Ruthenium Biimidazole‐Anthraquinone Dyads to Demonstrate Photoinduced Electron Transfer: Combined Experimental and DFT/TD‐DFT Investigations
A Biimidazole-anthraquinone ligand has been utilized in this paper to synthesize a new family of Ru(II) complexes capable of demonstrating intramolecular electron transfer from excited *[Ru(ppy)]2+Expand
Polypyridyl-imidazole based Os(II) complex as optical chemosensor for anions and cations and multi-readout molecular logic gates and memory device: Experimental and DFT/TDDFT study
Abstract A monometallic Os(II) complex of composition, [(bpy)2OsII(phen-Hbzim-tpy)](ClO4)2, where phen-Hbzim-tpy = 2-(4-(2,6-di(pyridin-2-yl)pyridine-4-yl)phenyl)-1H-imidazole[4,5-f]Expand
Di- and trinuclear Ru(II) complexes of 1,10-phenanthroline and 2,2′-bipyridine derivatives; synthesis, photophysical and electrochemical properties
Three heterotopic ligands L1, L2, and L3 based on 1,10-phenanthroline and 2,2′-bipyridine moieties have been synthesized and characterized. The Ru(II) complexes [{Ru(bpy)2}3(µ3-L1)](PF6)6,Expand
Design of Ru(II) Complexes Based on Anthraimidazoledione-Functionalized Terpyridine Ligand for Improvement of Room-Temperature Luminescence Characteristics and Recognition of Selective Anions: Experimental and DFT/TD-DFT Study.
TLDR
Temperature-dependent luminescence investigations indicate that the energy gap between the emitting 3MLCT state and nonemitting metal-centered state 3MC in the complexes increased enormously compared with parent [Ru(tpy)2]2+. Expand
A Cyanuric Acid Platform Based Tripodal Bis-heteroleptic Ru(II) Complex of Click Generated Ligand for Selective Sensing of Phosphates via C-H···Anion Interaction.
TLDR
A new bis-heteroleptic trinuclear Ru(II) complex has been synthesized from electron deficient cyanuric acid platform based copper-catalyzed azide-alkyne cycloaddition with selectivity toward higher analogues of phosphates and UV-vis and photoluminescence titration profiles suggest 1:3 host-guest stoichiometric binding between 1[PF6]6 and HP2O7(3-). Expand
Aryl substituted 2,6-di(thiazol-2-yl)pyridines –excited-state characterization and potential for OLEDs
Abstract A series of 2,6-di(thiazol-2-yl)pyridines (dtpy) functionalized at 4-position with 1-naphtyl (1), 2-naphtyl (2), 9-anthryl (3), 2-anthryl (4), 9-phenantryl (5) and 1-pyrenyl (6) groups hasExpand
Design of Multichannel Osmium-Based Metalloreceptor for Anions and Cations by Taking Profit from Metal-Ligand Interaction and Construction of Molecular Keypad Lock and Memory Device.
TLDR
The polypyridylimidazole-based bifunctional Os(II) complex synthesized and structurally characterized for the construction of multifunctional logic devices mimics the functions of two-input INHIBIT, OR, NOR, and XNOR logic gates, as well as three-input NOR logic behavior. Expand
...
1
2
3
...

References

SHOWING 1-10 OF 111 REFERENCES
Ru(II) and Os(II) complexes based on terpyridyl-imidazole ligand rigidly linked to pyrene: synthesis, structure, photophysics, electrochemistry, and anion-sensing studies.
TLDR
Spectrophotometeric, fluorometric, and cyclic voltammetric studies of the complexes in presence of anions reveal that the complexes sense principally F(-), CN(-), and to a lesser extent for AcO(-). Expand
Bistridentate ruthenium(II)polypyridyl-type complexes with microsecond 3MLCT state lifetimes: sensitizers for rod-like molecular arrays.
A series of bistridentate ruthenium(II) polypyridyl-type complexes based on the novel 2,6-di(quinolin-8-yl)pyridine (dqp) ligand have been synthesized and their photophysical properties have beenExpand
Room temperature phosphorescence from ruthenium(II) complexes bearing conjugated pyrenylethynylene subunits.
TLDR
All three pyrenylethynylene-containing Ru(II) complexes are unique in this genre of chromophores since the lowest excited state is 3IL-based at room temperature and at 77 K, and there is no compelling evidence of interacting or equilibrated excited states. Expand
Enhancement of luminescence lifetimes of mononuclear ruthenium(II)-terpyridine complexes by manipulation of the sigma-donor strength of ligands.
The synthesis and characterization of mixed ligand 2,2';6',2' '-terpyridine (tpy) ruthenium complexes with 2,6-bis([1,2,4]triazol-3-yl)pyridine, 2,6-bis(5-phenyl-[1,2,4]triazol-3-yl)pyridine, andExpand
Synthesis and proton transfer-linked redox tuning of ruthenium(II) complexes with tridentate 2,6-bis(benzimidazol-2-yl)pyridine ligands
New ruthenium complexes of two tridentate ligands 2,6-bis(benzimidazol-2-yl)pyridine (L7) and 2,6-bis(1-methylbenzimidazol-2-yl)pyridine (L8) have been synthesised. Proton and 13C NMR spectroscopyExpand
Excited-State Processes in Ruthenium(II) Bipyridine Complexes Containing Covalently Bound Arenes
The photophysical properties of a series of ruthenium trisbipyridine complexes covalently linked to aromatic chromophores of the type [Ru(bpy)2(4-methyl-4‘-(2-arylethyl)-2,2‘-bipyridine)]2+(ClO4)2,Expand
Ruthenium(II) complexes with improved photophysical properties based on planar 4'-(2-pyrimidinyl)-2,2':6',2' '-terpyridine ligands.
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
Molecular design of a proton-induced molecular switch based on rod-shaped Ru dinuclear complexes with bis-tridentate 2,6-bis(benzimidazol-2-yl)pyridine derivatives
New dinuclear Ru complexes of bis-tridentate 2,6-bis(benzimidazol-2-yl)pyridine derivatives, [Ru2(terpy)2(H4Ln)]4+ (terpy = 2,2′:6′,2″-terpyridine, n = 0∼2), have been synthesized. The Ru complexesExpand
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.
TLDR
Anion-induced lifetime quenching and/or enhancement make the receptors suitable lifetime-based sensors for selective anions, and Cyclic voltammetric measurements of the compounds carried out in acetonitrile have provided evidence in favor of anion-dependent electrochemical responses with F(-) and AcO(-) ions. Expand
Intramolecular Electronic Energy Transfer in Ruthenium(II) Diimine Donor/Pyrene Acceptor Complexes Linked by a Single C−C Bond
The photophysical behavior of [(bpy)2Ru(L)]2+ complexes (L = 4-(1‘‘-pyrenyl)-2,2‘-bipyridine, bpy-pyr; 2-(1‘-pyrenyl)-1,10-phenanthroline, phen-pyr; and 2-(2‘-naphthyl)-1,10-phenanthroline, phen-nap)Expand
...
1
2
3
4
5
...