title: A phosphorescent copper(I) complex: synthesis, characterization, photophysical property, and oxygen-sensing behavior.
abstract: In this paper, we report the synthesis, crystal structure, photophysical properties, and electronic nature of a phosphorescent Cu(I) complex of [Cu(Phen-Np)(POP)]BF4, where Phen-Np and POP stand for 2-(naphthalen-1-yl)-1H-imidazo[4,5-f][1,10]phenanthroline and bis(2-(diphenylphosphanyl)phenyl) ether, respectively. [Cu(Phen-Np)(POP)]BF4 renders a yellow phosphorescence peaking at 545 nm, with a long excited state lifetime of 4.69 μs. Density functional calculation reveals that the emission comes from a triplet metal-to-ligand-charge-transfer excited state. We electrospun composite nanofibers of [Cu(Phen-Np)(POP)]BF4 and polystyrene (PS), hoping to explore the possibility of using the composite nanofibers as an oxygen sensing material. The finally obtained samples with average diameter of ∼300 nm exhibit a maximum sensitivity of 7.2 towards molecular oxygen with short response time of 7s due to the large surface-area-to-volume ratio of nanofibrous membranes. No photobleaching is detected in these samples.
authors: The First College of Clinical Medical Science, China Three Gorges University, and Yichang Central People's Hospital, Yichang 443003, China.
authors: Caihong
authors: C
authors: Wen
authors: Guoquan
authors: G
authors: Tao
authors: Xinhua
authors: X
authors: Xu
authors: Xiaoqing
authors: X
authors: Feng
authors: Rongcheng
authors: R
authors: Luo