The Experts below are selected from a list of 1902 Experts worldwide ranked by ideXlab platform
H. Nasri - One of the best experts on this subject based on the ideXlab platform.
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Synthesis, Electronic Spectroscopy, Cyclic Voltammetry, Photophysics, Electrical Properties and X-ray Molecular Structures of meso-Tetrakis[4-(benzoyloxy)phenyl]porphyrinatozinc(II) Complexes with Aza Ligands
European Journal of Inorganic Chemistry, 2016Co-Authors: S. Nasri, I. Zahou, I. Turowska-tyrk, T. Roisnel, F. Loiseau, E. Saint-amant, H. NasriAbstract:The synthesis of the new meso-porphyrin tetrakis[4-(benzoyloxy)phenyl]porphyrin (H2TPBP), the meso-_tetrakis[4-(benzoyloxy)phenyl]porphyrinato_zinc(II) starting material [Zn(TPBP)] (1), and the 1,4-diazabicyclo[2.2.2]octane (dabco), Pyrazine (pyz), 4,4′-bipyridine (4,4′-bpy), 4,4′-diaminodiphenylmethane (4,4′-mda), and 4-cyanopyridine (4-CNpy) coordination compounds with [Zn(TPBP)] (2–7) are described. The preparation of the dabco Derivative in chlorobenzene leads to a crystalline monomeric five-coordinate zinc porphyrin species (2), whereas the synthesis in dichloromethane gives a five-coordinate zinc metalloporphyrin dimer (3) in the solid state. The Pyrazine Derivative crystallizes as a bis-Pyrazine six-coordinate zinc metalloporphyrin (4). Complex 5 in the solid state is a dimer with 4,4′-bpy as a bridging ligand, whereas the 4,4′-mda species (6) is a five-coordinated monomeric zinc Derivative in the solid state. All of structures of 2–6 possess cavities with different dimensions in which solvent molecules are located. The solution UV/Vis spectra of 2–7 exhibit redshifted Soret bands that indicate that these Derivatives are five-coordinate zinc(II) porphyrin complexes in solution. UV/Vis titrations show that the association constants of 2–7 are close to those of known five-coordinate zinc(II) meso-porphyrins. The 1H NMR spectra of these species confirm this deduction. The photophysical proprieties of 1–7 are similar to those of related zinc(II) meso-porphyrins. The cyclic voltammograms of the H2TPBP free base and 1–7 present a third one-electron reversible oxidation wave. Single-layer diode devices of the [iridium tin oxide/zinc porphyrin/aluminum] configuration show relatively low turn-on voltages. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Vandana Bhalla - One of the best experts on this subject based on the ideXlab platform.
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"Metal-Free" Nanoassemblies of AIEE-ICT-Active Pyrazine Derivative: Efficient Photoredox System for the Synthesis of Benzimidazoles.
The Journal of organic chemistry, 2020Co-Authors: Shruti Dadwal, Manoj Kumar, Vandana BhallaAbstract:Supramolecular nanoassemblies of an AIEE-ICT-active Pyrazine Derivative (TETPY) having strong absorption in the visible region and excellent transportability have been utilized as an efficient phot...
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supramolecular ensemble of a tict aiee active Pyrazine Derivative and cuo nps a potential photocatalytic system for sonogashira couplings
ACS Catalysis, 2016Co-Authors: Harnimarta Deol, Manoj Kumar, Subhamay Pramanik, Imran A Khan, Vandana BhallaAbstract:The donor–acceptor system 4 having Pyrazine scaffold as an acceptor moiety coupled to donor amino groups through rotatable phenyl rings has been synthesized, which formed aggregates in aqueous media, exhibited copper induced restriction to intramolecular rotation, and served as a “not quenched” probe for the detection of copper(II) ions. During this process, the aggregates of Derivative 4 acted as reactors and stabilizers for the generation of CuO NPs and themselves became oxidized to form polyamine Derivative 6. Interestingly, the oxidized species 6 in combination with copper oxide nanoparticles served as light-harvesting antennas and exhibited excellent photocatalytic efficiency in Sonogashira coupling under mild and eco-friendly conditions (room temperature, aqueous media, aerial conditions, and visible light irradiation).
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Supramolecular Ensemble of a TICT-AIEE Active Pyrazine Derivative and CuO NPs: A Potential Photocatalytic System for Sonogashira Couplings
2016Co-Authors: Harnimarta Deol, Manoj Kumar, Subhamay Pramanik, Imran A Khan, Vandana BhallaAbstract:The donor–acceptor system 4 having Pyrazine scaffold as an acceptor moiety coupled to donor amino groups through rotatable phenyl rings has been synthesized, which formed aggregates in aqueous media, exhibited copper induced restriction to intramolecular rotation, and served as a “not quenched” probe for the detection of copper(II) ions. During this process, the aggregates of Derivative 4 acted as reactors and stabilizers for the generation of CuO NPs and themselves became oxidized to form polyamine Derivative 6. Interestingly, the oxidized species 6 in combination with copper oxide nanoparticles served as light-harvesting antennas and exhibited excellent photocatalytic efficiency in Sonogashira coupling under mild and eco-friendly conditions (room temperature, aqueous media, aerial conditions, and visible light irradiation)
S. Nasri - One of the best experts on this subject based on the ideXlab platform.
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Synthesis, Electronic Spectroscopy, Cyclic Voltammetry, Photophysics, Electrical Properties and X-ray Molecular Structures of meso-Tetrakis[4-(benzoyloxy)phenyl]porphyrinatozinc(II) Complexes with Aza Ligands
European Journal of Inorganic Chemistry, 2016Co-Authors: S. Nasri, I. Zahou, I. Turowska-tyrk, T. Roisnel, F. Loiseau, E. Saint-amant, H. NasriAbstract:The synthesis of the new meso-porphyrin tetrakis[4-(benzoyloxy)phenyl]porphyrin (H2TPBP), the meso-_tetrakis[4-(benzoyloxy)phenyl]porphyrinato_zinc(II) starting material [Zn(TPBP)] (1), and the 1,4-diazabicyclo[2.2.2]octane (dabco), Pyrazine (pyz), 4,4′-bipyridine (4,4′-bpy), 4,4′-diaminodiphenylmethane (4,4′-mda), and 4-cyanopyridine (4-CNpy) coordination compounds with [Zn(TPBP)] (2–7) are described. The preparation of the dabco Derivative in chlorobenzene leads to a crystalline monomeric five-coordinate zinc porphyrin species (2), whereas the synthesis in dichloromethane gives a five-coordinate zinc metalloporphyrin dimer (3) in the solid state. The Pyrazine Derivative crystallizes as a bis-Pyrazine six-coordinate zinc metalloporphyrin (4). Complex 5 in the solid state is a dimer with 4,4′-bpy as a bridging ligand, whereas the 4,4′-mda species (6) is a five-coordinated monomeric zinc Derivative in the solid state. All of structures of 2–6 possess cavities with different dimensions in which solvent molecules are located. The solution UV/Vis spectra of 2–7 exhibit redshifted Soret bands that indicate that these Derivatives are five-coordinate zinc(II) porphyrin complexes in solution. UV/Vis titrations show that the association constants of 2–7 are close to those of known five-coordinate zinc(II) meso-porphyrins. The 1H NMR spectra of these species confirm this deduction. The photophysical proprieties of 1–7 are similar to those of related zinc(II) meso-porphyrins. The cyclic voltammograms of the H2TPBP free base and 1–7 present a third one-electron reversible oxidation wave. Single-layer diode devices of the [iridium tin oxide/zinc porphyrin/aluminum] configuration show relatively low turn-on voltages. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
I. Turowska-tyrk - One of the best experts on this subject based on the ideXlab platform.
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Synthesis, Electronic Spectroscopy, Cyclic Voltammetry, Photophysics, Electrical Properties and X-ray Molecular Structures of meso-Tetrakis[4-(benzoyloxy)phenyl]porphyrinatozinc(II) Complexes with Aza Ligands
European Journal of Inorganic Chemistry, 2016Co-Authors: S. Nasri, I. Zahou, I. Turowska-tyrk, T. Roisnel, F. Loiseau, E. Saint-amant, H. NasriAbstract:The synthesis of the new meso-porphyrin tetrakis[4-(benzoyloxy)phenyl]porphyrin (H2TPBP), the meso-_tetrakis[4-(benzoyloxy)phenyl]porphyrinato_zinc(II) starting material [Zn(TPBP)] (1), and the 1,4-diazabicyclo[2.2.2]octane (dabco), Pyrazine (pyz), 4,4′-bipyridine (4,4′-bpy), 4,4′-diaminodiphenylmethane (4,4′-mda), and 4-cyanopyridine (4-CNpy) coordination compounds with [Zn(TPBP)] (2–7) are described. The preparation of the dabco Derivative in chlorobenzene leads to a crystalline monomeric five-coordinate zinc porphyrin species (2), whereas the synthesis in dichloromethane gives a five-coordinate zinc metalloporphyrin dimer (3) in the solid state. The Pyrazine Derivative crystallizes as a bis-Pyrazine six-coordinate zinc metalloporphyrin (4). Complex 5 in the solid state is a dimer with 4,4′-bpy as a bridging ligand, whereas the 4,4′-mda species (6) is a five-coordinated monomeric zinc Derivative in the solid state. All of structures of 2–6 possess cavities with different dimensions in which solvent molecules are located. The solution UV/Vis spectra of 2–7 exhibit redshifted Soret bands that indicate that these Derivatives are five-coordinate zinc(II) porphyrin complexes in solution. UV/Vis titrations show that the association constants of 2–7 are close to those of known five-coordinate zinc(II) meso-porphyrins. The 1H NMR spectra of these species confirm this deduction. The photophysical proprieties of 1–7 are similar to those of related zinc(II) meso-porphyrins. The cyclic voltammograms of the H2TPBP free base and 1–7 present a third one-electron reversible oxidation wave. Single-layer diode devices of the [iridium tin oxide/zinc porphyrin/aluminum] configuration show relatively low turn-on voltages. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
E. Saint-amant - One of the best experts on this subject based on the ideXlab platform.
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Synthesis, Electronic Spectroscopy, Cyclic Voltammetry, Photophysics, Electrical Properties and X-ray Molecular Structures of meso-Tetrakis[4-(benzoyloxy)phenyl]porphyrinatozinc(II) Complexes with Aza Ligands
European Journal of Inorganic Chemistry, 2016Co-Authors: S. Nasri, I. Zahou, I. Turowska-tyrk, T. Roisnel, F. Loiseau, E. Saint-amant, H. NasriAbstract:The synthesis of the new meso-porphyrin tetrakis[4-(benzoyloxy)phenyl]porphyrin (H2TPBP), the meso-_tetrakis[4-(benzoyloxy)phenyl]porphyrinato_zinc(II) starting material [Zn(TPBP)] (1), and the 1,4-diazabicyclo[2.2.2]octane (dabco), Pyrazine (pyz), 4,4′-bipyridine (4,4′-bpy), 4,4′-diaminodiphenylmethane (4,4′-mda), and 4-cyanopyridine (4-CNpy) coordination compounds with [Zn(TPBP)] (2–7) are described. The preparation of the dabco Derivative in chlorobenzene leads to a crystalline monomeric five-coordinate zinc porphyrin species (2), whereas the synthesis in dichloromethane gives a five-coordinate zinc metalloporphyrin dimer (3) in the solid state. The Pyrazine Derivative crystallizes as a bis-Pyrazine six-coordinate zinc metalloporphyrin (4). Complex 5 in the solid state is a dimer with 4,4′-bpy as a bridging ligand, whereas the 4,4′-mda species (6) is a five-coordinated monomeric zinc Derivative in the solid state. All of structures of 2–6 possess cavities with different dimensions in which solvent molecules are located. The solution UV/Vis spectra of 2–7 exhibit redshifted Soret bands that indicate that these Derivatives are five-coordinate zinc(II) porphyrin complexes in solution. UV/Vis titrations show that the association constants of 2–7 are close to those of known five-coordinate zinc(II) meso-porphyrins. The 1H NMR spectra of these species confirm this deduction. The photophysical proprieties of 1–7 are similar to those of related zinc(II) meso-porphyrins. The cyclic voltammograms of the H2TPBP free base and 1–7 present a third one-electron reversible oxidation wave. Single-layer diode devices of the [iridium tin oxide/zinc porphyrin/aluminum] configuration show relatively low turn-on voltages. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
