Search results for "POLYPYRIDINE COMPLEXES"

showing 3 items of 3 documents

Polychromatic femtosecond fluorescence studies of metal–polypyridine complexes in solution

2011

Femtosecond-resolved broadband fluorescence studies are reported for[ M(bpy)(3)](2+) (M = Fe, Ru), RuN3 and RuN719 complexes in solution. We investigated the pump wavelength dependence of the fluorescence of aqueous [ Fe(bpy)(3)](2+) and the solvent and ligand dependence of the fluorescence of Ru-complexes excited at 400 nm. For all complexes, the (MLCT)-M-1 fluorescence appears at zero time delay with a mirror-like image with respect to the absorption. It decays in <= 30-45 fs due to intersystem crossing to the (MLCT)-M-3 states, but a longer lived component of similar to 190 fs additionally shows up in RuN719 and RuN3. No solvent effects are detected. The very early dynamics are character…

Aqueous solutionChemistryFluorescence up-conversionSettore FIS/01 - Fisica SperimentaleGeneral Physics and AstronomyIntersystem crossingMetal–polypyridine complexes; IVR; Internal conversion; Intersystem crossing; Ultrafast; Fluorescence up-conversionPhotochemistryFluorescencePhotoinduced electron transferIntersystem crossingInternal conversionUltrafastExcited stateIntramolecular forceFemtosecondIVRMetal–polypyridine complexePhysical and Theoretical ChemistrySolvent effects
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BODIPY-phosphane as a versatile tool for easy access to new metal-based theranostics

2012

A new BODIPY-phosphane was synthesized and proved to be a versatile tool for imaging organometallic complexes. It also led to easy access to a new family of theranostics, featuring gold, ruthenium and osmium complexes. The compounds' cytotoxicity was tested on cancer cells, and their cell uptake was followed by fluorescence microscopy in vitro.

Boron Compoundsinorganic chemicalsCell SurvivalPhosphinesINHIBITIONchemistry.chemical_elementGOLD COMPOUNDSRutheniumInorganic ChemistryMetalchemistry.chemical_compoundGold CompoundsPOLYPYRIDINE COMPLEXESCoordination ComplexesCHEMISTRYCell Line TumorFluorescence microscopeHumansOrganic chemistryOsmiumCytotoxicityAGENTSMicroscopy ConfocalChemistryOsmiumCombinatorial chemistryRutheniumMetalsvisual_artPHOTOPHYSICAL PROPERTIESCancer cellvisual_art.visual_art_mediumMODESGoldBODIPYDYESBEHAVIOR
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Iridium(III) Complexes with Phenyl-tetrazoles as Cyclometalating Ligands

2014

Ir(II) cationic complexes with cyclometalating tetrazolate ligands were prepared for the first time, following a two-step strategy based on (i) a silver-assisted cyclometalation reaction of a tetrazole derivative with IrCl3 affording a bis-cyclometalated solvato-complex P ([Ir(ptrz)(2)(CH3CN)(2)](+), Hptrz = 2-methyl-5-phenyl-2H-tetrazole); (ii) a substitution reaction with five neutral ancillary ligands to get [Ir(ptrz)(2)L](+), with L = 2,2'-bypiridine (1), 4,4'-di-tert-butyl-2,2'-bipyridine (2), 1,10-phenanthroline (3), and 2-(1-phenyl-1H-1,2,3-triazol-4-yl)pyridine (4), and [Ir(ptrz)(2)L-2](+), with L = tertbutyl isocyanide (5). X-ray crystal structures of P, 2, and 3 were solved. Elect…

Substitution reactionIr(III) complexePhenanthrolineIsocyanidechemistry.chemical_elementphenyl tetrazolesPhotochemistryMedicinal chemistryInorganic Chemistrychemistry.chemical_compoundBipyridinechemistryPyridineEMITTING ELECTROCHEMICAL-CELLS; TRANSITION-METAL-COMPLEXES; IR(III) COMPLEXES; ELECTROLUMINESCENT DEVICES; ANCILLARY LIGAND; SOLID-STATE; PHOTOPHYSICAL PROPERTIES; POLYPYRIDINE COMPLEXES; BLUE PHOSPHORESCENCE; ISOCYANIDE COMPLEXESTetrazoleIridiumPhysical and Theoretical ChemistryAcetonitrile
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