376367-93-0Relevant articles and documents
Molecular-engineered [Ir(Fppy)2(Mepic)] towards efficient blue-emission
Zanoni, Kassio P. S.,Ito, Akitaka,Murakami Iha, Neyde Y.
, p. 6367 - 6376 (2015)
A novel Ir(III) complex, [Ir(Fppy)2(Mepic)] (Fppy = 2-(2,4-difluorophenyl)pyridinate; Mepic = 3-methylpyridine-2-carboxylate) was engineered to show a blue phosphorescence with an impressive unitary quantum yield in our search for luminescent metal complexes for low cost displays and efficient lighting devices. Application of the Golden rule through Franck-Condon spectral analyses along with TD-DFT calculations and comparisons to the [Ir(Fppy)2(pic)] complex have provided insights on the mixing extension between charge-transfer (CT) and ligand-centered (LC) excited states in the emissive lowest-energy triplet transition for different media. The relatively narrow and vibronically-structured emission of [Ir(Fppy)2(Mepic)] at 298 K mainly arises from a spin-orbit-induced mixed 3MLCT-LCIr(Fppy)→Fppy/3LLCTFppy→Mepic excited state, with an enhanced MLCT character because of the methyl addition to pic. In frozen media at 77 K, the CT contribution is extinguished, leading to a pure LCFppy emission, with a similar emissive spectral profile to the free ligand, FppyH. The efficient blue emission shows that the complex is suitable for high-performance light-emitting devices and for thermo- and rigidity-sensors.
Highly efficient phosphorescence from cyclometallated iridium(III) compounds: Improved syntheses of picolinate complexes and quantum chemical studies of their electronic structures
Sanner, Robert D.,Cherepy, Nerine J.,Martinez, H. Paul,Pham, Hung Q.,Young, Victor G.
, (2019)
We report a new method to make heteroleptic cyclometallated iridium(III) complexes that employs 1,2-dimethoxyethane (DME) instead of the commonly used 2-ethoxyethanol for the addition of ancillary ligands to chloro-bridged dimeric iridium species. Thus, p
Inter-ligand energy transfer and related emission change in the cyclometalated heteroleptic iridium complex: Facile and efficient color tuning over the whole visible range by the ancillary ligand structure
You, Youngmin,Park, Soo Young
, p. 12438 - 12439 (2005)
We report a novel color tuning methodology in the electrophosphorescent iridium complex by substituting one cyclometalating ligand to an ancillary ligand as an emitting center. Highly efficient exothermic inter-ligand energy transfer (ILET) from the MLCT
METHOD FOR THE SYNTHESIS OF IRIDIUM ORGANOMETALLIC MATERIAL
-
Paragraph 0059-0060, (2020/02/16)
According to one embodiment, a method of synthesizing an organometallic iridium monomer compound includes obtaining a dimeric iridium compound having a halogenated bridge, refluxing a mixture comprising the dimeric iridium compound, a base, an ancillary ligand, and 1,2-dimethoxyethane for forming a precipitate of an organometallic iridium monomer, and filtering the refluxed mixture to collect the organometallic iridium monomer precipitate.
Synthetic method of organometallic iridium compound
-
Page/Page column 3-4, (2012/12/14)
A synthetic method for preparing organometallic iridium compounds is provided and includes the two steps of (1) synthesizing a di-iridium compound with a halogenated bridge: L2Ir(μ?X)2IrL2, L; and (2) reacting L2Ir(μ?X)2IrL2 with a ligand to give the product [C?]N]2Ir (LX). The invention is an improvement over the traditional method for preparing such compounds and has the advantages of shortened reaction time, increased yield, and products of over 99% purity obtained without chromatography.
Substituent effect of ancillary ligands on the luminescence of bis[4,6-(di-fluorophenyl)-pyridinato-N,C2′]iridium(iii) complexes
Zhou, Yuyang,Li, Wanfei,Liu, Yang,Zeng, Liqiang,Su, Wenming,Zhou, Ming
, p. 9373 - 9381 (2012/09/05)
Two series of (dfppy)2Ir(LN^O) with different substituents were designed and successfully synthesized and the effect of substitution at the ancillary ligand on the photophysical and electrochemical properties of (dfppy)2Ir
PRODUCTION OF IRIDIUM COMPLEXES
-
Page/Page column 67-68, (2010/02/07)
The invention relates to a process for producing a trivalent hexadentate ortho-metallated iridium complex with an iridium compound and a coordination compound as starting materials, which is characterized in that a monovalent iridium dinulear complex represented by the following formula (I)is used:(wherein A represents a non-conjugated diene compound; and X represents a halogen atom).According to the invention, it is possible to carry out the successive reactions in the same reaction vessel (i.e., one-pot reaction) by using the complex produced in the above process in the next step without isolation and purification.