760210-64-8Relevant academic research and scientific papers
Fast synthesis of iridium(iii) complexes with sulfur-containing ancillary ligand for high-performance green OLEDs with EQE exceeding 31%
Lu, Guang-Zhao,Tu, Zhen-Long,Liu, Liang,Zhang, Wen-Wei,Zheng, You-Xuan
, p. 7273 - 7278 (2019/06/27)
Three green iridium(iii) cyclometalated complexes, namely, (4tfmppy)2Ir(dipdtc), (24btfmppy)2Ir(dipdtc), and (TN4T)2Ir(dipdtc), with the sulfur-containing ancillary ligand N,N-diisopropyldithiocarbamate (dipdtc)
Organoiridium complex for organic electroluminescent elements
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Page/Page column 26; 27, (2018/02/02)
The present invention provides an organometallic complex having a high quantum efficiency even in a polymer thin film as a emitting material for organic electroluminescent (EL) element. The present invention relates to an organoiridium complex for an organic electroluminescent element represented by the following Formula; wherein a C—N ligand including two atomic groups (A1, A2), and a β-diketone ligand in line symmetry having two tert-butyl-substituted phenyl groups are coordinated with an iridium atom. The organoiridium complex of the present invention has a high quantum efficiency even in a polymer thin film with respect to green to yellow electroluminescence. (In the aforementioned Formula, R1, R2, and R3 are each a tert-butyl group or a hydrogen atom, and have at least one tert-butyl group; they may bond each other to thereby form a saturated hydrocarbon ring, when having two tert-butyl groups; A1, A2 are each an unsaturated hydrocarbon ring, at least one is a single ring, and at least one is a heterocyclic ring).
Synthetic control over photoinduced electron transfer in phosphorescence zinc sensors
Woo, Hana,Cho, Somin,Han, Yejee,Chae, Weon-Sik,Ahn, Dae-Ro,You, Youngmin,Nam, Wonwoo
, p. 4771 - 4787 (2013/06/04)
Despite the promising photofunctionalities, phosphorescent probes have been examined only to a limited extent, and the molecular features that provide convenient handles for controlling the phosphorescence response have yet to be identified. We synthesized a series of phosphorescence zinc sensors based on a cyclometalated heteroleptic Ir(III) complex. The sensor construct includes two anionic cyclometalating ligands and a neutral diimine ligand that tethers a di(2-picolyl)amine (DPA) zinc receptor. A series of cyclometalating ligands with a range of electron densities and band gap energies were used to create phosphorescence sensors. The sensor series was characterized by variable-temperature steady-state and transient photoluminescence spectroscopy studies, electrochemical measurements, and quantum chemical calculations based on time-dependent density functional theory. The studies demonstrated that the suppression of nonradiative photoinduced electron transfer (PeT) from DPA to the photoexcited IrIV species provided the underlying mechanism that governed the phosphorescent response to zinc ions. Importantly, the Coulombic barrier, which was located on either the cyclometalating ligand or the diimine ligand, negligibly influenced the PeT process. Phosphorescence modulation by PeT strictly obeyed the Rehm-Weller principle, and the process occurred in the Marcus-normal region. These findings provide important guidelines for improving sensing performance; an efficient phosphorescence sensor should include a cyclometalating ligand with a wide band gap energy and a deep oxidation potential. Finally, the actions of the sensor were demonstrated by visualizing the intracellular zinc ion distribution in HeLa cells using a confocal laser scanning microscope and a photoluminescence lifetime imaging microscope.
Syntheses, photoluminescence, and electroluminescence of a series of iridium complexes with trifluoromethyl-substituted 2-phenylpyridine as the main ligands and tetraphenylimidodiphosphinate as the ancillary ligand
Xu, Qiu-Lei,Wang, Cheng-Cheng,Li, Tian-Yi,Teng, Ming-Yu,Zhang, Song,Jing, Yi-Ming,Yang, Xu,Li, Wei-Nan,Lin, Chen,Zheng, You-Xuan,Zuo, Jing-Lin,You, Xiao-Zeng
, p. 4916 - 4925 (2013/06/05)
Five bis-cyclometalated iridium complexes with tifluoromethyl-substituted 2-phenylpyridine (ppy) at different positions of its phenyl group as the main ligands and tetraphenylimidodiphosphinate (tpip) as the ancillary ligand, 2-6 (1 is a trifluoromethyl-f
CYCLOMETALATED TRANSITION METAL DYES
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Page/Page column 77, (2012/12/13)
The present invention provides substituted cyclometalated dyes with wider absorbance bands in the visible spectrum. The compounds have hexacoordinate structures as shown in formula (I) where the central transition metal (M) is bonded to two substituted bi
Blue phosphorescence of trifluoromethyl- and trifluoromethoxy-substituted cationic iridium(III) isocyanide complexes
Shavaleev, Nail M.,Monti, Filippo,Scopelliti, Rosario,Armaroli, Nicola,Graetzel, Michael,Nazeeruddin, Mohammad K.
, p. 6288 - 6296 (2012/10/29)
We report the first comprehensive comparative synthetic, structural, electrochemical, and spectroscopic study of an extended series of fluorocarbon-modified iridium(III) complexes. We prepared seven new cationic Ir(III) complexes with tert-butyl isocyanid
A trisheteroleptic cyclometalated RuII sensitizer that enables high power output in a dye-sensitized solar cell
Bomben, Paolo G.,Gordon, Terry J.,Schott, Eduardo,Berlinguette, Curtis P.
supporting information; experimental part, p. 10682 - 10685 (2012/01/04)
A trisheteroleptic cyclometalated ruthenium complex (see picture) bearing aliphatic substituents was synthesized, characterized, and evaluated in a dye-sensitized solar cell (DSSC). This thiocyanate-free dye, which has favorable structural elements to exh
