scholarly journals Phosphorescent [3+2+1] Coordinated Ir(III) Cyano Complexes in Achieving Efficient Phosphors and Their Application into OLED Devices

2021 ◽  
Author(s):  
Yuan Wu ◽  
Chen Yang ◽  
Jie Liu ◽  
Meng Zhang ◽  
Weiqiang Liu ◽  
...  
Keyword(s):  
Iridium Complexes ◽  
Pseudo Halides ◽  
Cyano Complexes ◽  
Derivatives Of

A series of neutral [3+2+1] coordinated iridium complexes bearing tridentate bis-NHC carbene chelates (2,6-bisimidazolylidene benzene), bidentate chelates (C^N ligands, e.g. derivatives of 2-phenylpridine), and monodentate ions (halide and pseudo-halides, such...

Übergangsmetallkomplexe mit Nitroxidradikalen: Palladium-, Platin-, Pentamethylcyclopentadienyl-rhodium- und -iridium-Komplexe sowie α-Aminocarboxylatkomplexe mit Donor-haltigen Derivaten des 2,5-Dihydroimidazol-l-oxyls / Transition Metal Complexes of Nitroxide Radicals, Palladium, Platinum, Pentamethylcyclopentadienyl Rhodium and Iridium Complexes, and α-Aminocarboxylate Complexes with Derivatives of 2,5-Dihydroimidazole-l-oxyls

1998 ◽  
Vol 53 (1) ◽  
pp. 101-109 ◽  
Author(s):  
Frank Hintermaier ◽  
Sylvia Helding ◽  
Leonid B. Volodarsky ◽  
Karlheinz Sünkel ◽  
Kurt Polbom ◽  
...  
Keyword(s):  
Nitrogen Atom ◽  
Molecular Structures ◽  
Iridium Complexes ◽  
X Ray Diffraction ◽  
Chelate Complexes ◽  
X Ray ◽  
Ring Nitrogen ◽  
Derivatives Of ◽  
Ring Nitrogen Atom ◽  
Palladium Platinum

2,5-Dihydroimidazoline-l-oxyl radicals I, II with imino substituents coordinate to Pd(II) and Pt(II) complexes with formation of the N,N chelate complexes 1-6. With oxygen containing substituents either monodentate N-coordination to give 8 or N ,O chelate formation to give 9 takes place, depending on the position of the oxygen atom relative to the ring nitrogen atom. With radicals III that also have the second ring nitrogen atom oxidized and the Rh(III) or Ir(III) complexes [Cp*MCl2]2 the O , O chelates 11 -13 could be obtained, while with Na2PdCl4 the heterocycle was destroyed with formation of a N,N chelate complex 10 of an α-nitrosooxime ligand. The orthopalladated 2,2,5,5 tetramethyl-4-phenyl-2,5-dihydroimidazoline-l-oxyl complex 7a reacts with several a-amino acidates under splitting of the dichloro bridge with formation of the C,N/N,O-bis-chelate complexes 7b-f. The molecular structures of 2 and 10 were determined by X-ray diffraction.

scholarly journals Dipyridylmethane Ethers as Ligands for Luminescent Ir Complexes

Molecules ◽  
2021 ◽  
Vol 26 (23) ◽  
pp. 7161
Author(s):  
Giorgio Volpi ◽  
Claudio Garino ◽  
Roberto Gobetto ◽  
Carlo Nervi
Keyword(s):  
Electronic Structure ◽  
Quantum Yield ◽  
Electrochemical Properties ◽  
Electrochemical Behavior ◽  
Functional Group ◽  
Molecular Wires ◽  
Iridium Complexes ◽  
High Quantum Yield ◽  
Derivatives Of

This work reports two new cationic heteroleptic cyclometalated iridium complexes, containing ether derivatives of di(pyridin-2-yl)methanol. The new ligands are based on dipyridin-2-ylmethane and are designed to obtain ether-based intermediates with extended electronic conjugation by insertion of π system such as phenyl, allyl and ethynyl. Different synthetic strategies were employed to introduce these units, as molecular wires, between the dipyridin-2-ylmethane chelating portion and the terminal N-containing functional group, such as amine and carbamide. The corresponding complexes show luminescence in the blue region of the spectrum, lifetimes between 0.6 and 2.1 μs, high quantum yield and good electrochemical behavior. The computational description (DFT) of the electronic structure highlights the key role of the conjugated π systems on optical and electrochemical properties of the final products.

The discovery of half-sandwich iridium complexes containing lidocaine and (pyren-1-yl)ethynyl derivatives of phenylcyanamide ligands for photodynamic therapy

2017 ◽  
Vol 46 (22) ◽  
pp. 7242-7252 ◽  
Author(s):  
Leila Tabrizi
Keyword(s):  
Photodynamic Therapy ◽  
Iridium Complexes ◽  
Derivatives Of ◽  
Half Sandwich

The new design of two cyclopentadienyl iridium(iii) complexes with (pyren-1-yl)ethynyl derivatives of phenylcyanamide and lidocaine ligands, have been studied for photodynamic therapy.

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