49743-93-3Relevant academic research and scientific papers
Highly phosphorescent iridium(III) complexes based on 2-(biphenyl-4-yl)benzo[d]oxazole derivatives: Synthesis, structures, properties and DFT calculations
Niu, Zhi-Gang,Zheng, Tao,Su, You-Hui,Wang, Peng-Jiang,Li, Xiao-Yan,Cui, Feng,Liang, Jiao,Li, Gao-Nan
, p. 6025 - 6033 (2015)
Five new bis-cyclometalated iridium(iii) complexes, [(bpbo)2Ir(acac)] (3a), [(fbpbo)2Ir(acac)] (3b), [(Mebpbo)2Ir(acac)] (3c), [(3,5-f2bpbo)2Ir(acac)] (3d) and [(2,4-f2bpbo)2Ir(acac)] (3e) (bpbo = 2-(biphenyl-4-yl)benzo[d]oxazole, fbpbo = 2-(4′-fluoro-[biphenyl]-4-yl)benzo[d]oxazole, Mebpbo = (4′-methyl-[biphenyl]-4-yl)benzo[d]oxazole, 3,5-f2bpbo = 2-(3′,5′-difluoro-[biphenyl]-4-yl)benzo[d]oxazole, 2,4-f2bpbo = 2-(2′,4′-difluoro-[biphenyl]-4-yl)benzo[d]oxazole, acac = acetylacetone), have been synthesized and fully characterized. A single crystal X-ray diffraction study was carried out on complexes 3a-3d, which showed that each adopted the distorted octahedral coordination geometry with the cis-C,C′ and trans-N,N′ arrangement. All Ir(iii) complexes are luminescent (560-566 nm) with quantum yields of 3.6-53.5% and lifetimes of 0.282-0.382 μs in solution at 298 K. The spectroscopic and redox characterisation of these complexes were complemented by DFT and TD-DFT calculations, supporting the assignment of 3MLCT/LC to the emissive character.
Aerobic oxidation of alcohols and the synthesis of benzoxazoles catalyzed by a cuprocupric coordination polymer (Cu+-CP) assisted by TEMPO
Feng, Xun,Xu, Chen,Wang, Zhi-Qiang,Tang, Si-Fu,Fu, Wei-Jun,Ji, Bao-Ming,Wang, Li-Ya
supporting information, p. 2088 - 2090 (2015/03/18)
A Cu+-CP based on the tetranuclear unit {[(HSQPA)2Cu4(bipy)4]·2H2O}n·2nH2O has been constructed through Cu2+ salt, 2-(sulfonylquinlium-8-yloxy)phthalic acid (H3SQPA), and 4,4′-bipyridine (bipy). This Cu+-CP combined with 2,2,6,6-tetramethylpiperidine-1-oxyl as the cocatalyst is an effective catalyst for aerobic oxidation of alcohols and the synthesis of benzoxazoles and can be recycled at least four times without losing its catalytic activity.
