School of Land Science and Technology, China University of Geosciences (Beijing), 29 Xueyuan Road, Beijing 100083, PR China. zheng
Spectrochim Acta A Mol Biomol Spectrosc. 2011 Oct 15;81(1):475-80. doi: 10.1016/j.saa.2011.06.040. Epub 2011 Jun 23.
In this paper, we report the synthesis, crystal structure, photophysical properties, and electronic nature of a phosphorescent Cu(I) complex of [Cu(Phen-Ph)(PPh(3))(2)]BF(4), where Phen-Ph and PPh(3) stand for 2-phenyl-1H-imidazo[4,5-f][1,10]phenanthroline and triphenylphosphine, respectively. [Cu(Phen-Ph)(PPh(3))(2)]BF(4) renders a yellow phosphorescence peaking at 553 nm, with a long excited state lifetime of 13.2 μs under N(2) atmosphere. 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-Ph)(PPh(3))(2)]BF(4) 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 ∼400 nm exhibit a maximum sensitivity of 6.52 towards molecular oxygen with short response time of 15 s due to the large surface-area-to-volume ratio of nanofibrous membranes. No photobleaching is detected in these samples.
在本文中，我们报告了一种 [Cu(Phen-Ph)(PPh(3))(2)]BF(4) 的磷光 Cu(I) 配合物的合成、晶体结构、光物理性质和电子性质，其中 Phen-Ph 和 PPh(3) 分别代表 2-苯基-1H-咪唑[4,5-f][1,10]菲咯啉和三苯基膦。[Cu(Phen-Ph)(PPh(3))(2)]BF(4) 呈现出 553nm 的黄色磷光，在氮气气氛下具有 13.2μs 的长激发态寿命。密度泛函计算表明，发射来自三重态金属-配体-电荷转移激发态。我们通过静电纺丝制备了 [Cu(Phen-Ph)(PPh(3))(2)]BF(4) 和聚苯乙烯 (PS) 的复合纳米纤维，希望探索将复合纳米纤维用作氧敏材料的可能性。最终得到的平均直径约为 400nm 的样品由于纳米纤维膜的大表面积与体积比，对分子氧具有最大灵敏度 6.52，响应时间短至 15s。在这些样品中未检测到光漂白。
