241151-55-3Relevant articles and documents
Singlet-triplet bistability in a 1,3-phenylene-based bis(aminoxyl) diradical
Rajca, Andrzej,Lu, Kan,Rajca, Suchada,Ross II, Charles R.
, p. 1249 - 1250 (1999)
Rapid quenching of the title bis(aminoxyl) 1 in 2-methyltetrahydrofuran from ambient temperature to cryogenic temperatures (5 K or below) produces 1 in its singlet state, which slowly converts at low temperatures, with an S-shaped time-dependence, to the
NOVEL MITOCHONDRIAL UNCOUPLERS FOR TREATMENT OF METABOLIC DISEASES AND CANCER
-
, (2017/12/18)
The present disclosure relates to benzamide compounds, prodrugs of the compounds, pharmaceutical compositions containing the compounds and/or the prodrugs and methods of using the compounds, prodrugs and pharmaceutical compositions in the treatment of diseases related to lipid metabolism including diabetes, Non-Alcholic Fatty Liver Disease (NAFLD), Non-Alcholic Steathohepatitis (NASH), diseases caused by abnormal cell proliferation including cancer, psoriasis, and infectious diseases.
Dinuclear iridium(III) complexes containing bibenzimidazole and their application to water photoreduction
Cai, Jian-Guang,Yu, Zhen-Tao,Yuan, Yong-Jun,Li, Feng,Zou, Zhi-Gang
, p. 1953 - 1963 (2014/06/24)
An efficient three-component catalytic system for visible-light-induced production of hydrogen from water was developed based on new dinuclear iridium photosensitizers (PSs), [Ir(tfdpyb)Cl]2(BiBzIm) (P1) and [Ir(tfmppy)2]2BiBzIm (P2) [tfdpyb = 1,3-di(2-pyridyl)-4,6- bis(trifluoromethyl)benzene, tfmppy = 2-(4-(trifluoromethyl)phenyl)-pyridine, BiBzIm = 2,2′-bibenzimidazole]. These iridium complexes were fully characterized by 1H NMR and ESI-MS, and their photophysical properties and electrochemical behaviors were also investigated. To compare with this new type of iridium compounds, the mononuclear analogues Ir(tfdpyb)(BiBzImH)Cl (P3), Ir(tfmppy)2(BiBzImH) (P4), and Ir(dpyx)(BiBzImH)Cl (P5) (dpyx = 1,3-di(2-pyridyl)-4,6-dimethylbenzene) were also synthesized. The absorption spectra of dinuclear and mononuclear complexes are similar mainly in terms of their shape in the visible-light region, but as expected, the dinuclear species are more intense (approximately twice) compared with the corresponding mononuclear compounds. These complexes were tested as PSs with regard to their capacity to reduce water in the photocatalytic system for hydrogen production together with a series of water reduction catalysts and triethanolamine (TEOA) as a sacrificial electron donor. Turnover numbers up to 3780 for the dinuclear iridium complex P1 and 1020 for the mononuclear iridium compound P3 were obtained under the identical conditions. The results indicate that dinuclear iridium compounds can behave as PSs to be used for reducing water to hydrogen, and their activity was superior to that of the mononuclear compounds in this system. This work provides us a more general architectural guideline for constructing metal complexes as light-harvesting materials for visible-light-induced hydrogen production.