title: Study on a phosphorescent copper(I) complex and its oxygen-sensing performances upon polystyrene and MCM-41 matrixes.
abstract: In this paper, we synthesize a new ligand of 1-ethyl-2-(naphthalen-1-yl)-1H-imidazo[4,5-f][1,10]phenanthroline (Phen-Np-Et) and its corresponding Cu(I) complex of [Cu(Phen-Np-Et)(POP)]BF(4), where POP is bis(2-(diphenylphosphanyl)phenyl) ether. The single-crystal structure, electronic nature and photophysical property of [Cu(Phen-Np-Et)(POP)]BF(4) are discussed in detail. It is found that the yellow emission from [Cu(Phen-Np-Et)(POP)]BF(4) owns a long excited state lifetime of 287 μs under pure N(2) atmosphere. Theoretical calculation on [Cu(Phen-Np-Et)(POP)](+) suggests that the emission comes from a triplet metal-to-ligand-charge-transfer excited state. Then, [Cu(Phen-Np-Et)(POP)]BF(4) are doped into two matrixes of polystyrene and MCM-41 to investigate the oxygen-sensing performance. Finally, sensitivity maxima of 9.6 and 3.6 are achieved by the composite nanofibers of [Cu(Phen-Np-Et)(POP)]BF(4)/polystyrene and the [Cu(Phen-Np-Et)(POP)]BF(4)/MCM-41, respectively. Both samples are highly sensitive toward molecular oxygen, owing to the large surface-area-to-volume ratios of nanofibrous membranes and MCM-41 matrix.
authors.affiliation: College of Materials Science and Engineering, Hunan University, Changsha 410082, China; Center for Functional Materials of Pingxiang, Pingxiang 337055, China. dreamxxy01@163.com
authors.forename: Xiao-yong
authors.initials: XY
authors.lastname: Xu
authors.forename: Han-ning
authors.initials: HN
authors.lastname: Xiao
authors.forename: Yi-ming
authors.initials: YM
authors.lastname: Xu
authors.forename: Ming-jun
authors.initials: MJ
authors.lastname: Zhang
mesh_terms: D056831:Coordination Complexes / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D003460:Crystallization; D004583:Electrons; D008027:Light; D049449:Luminescence; D008855:Microscopy, Electron, Scanning; D008856:Microscopy, Fluorescence; D008968:Molecular Conformation; D057139:Nanofibers / Q000648:ultrastructure; D010100:Oxygen / Q000032:analysis*; D011137:Polystyrenes / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D014961:X-Ray Diffraction
chemical_list: D056831:Coordination Complexes; C509968:MCM-41; D011137:Polystyrenes; D012822:Silicon Dioxide; D003300:Copper; D010100:Oxygen