Study on a phosphorescent copper(I) complex and its oxygen-sensing performances upon polystyrene and MCM-41 matrixes

详细信息	查看全文 | 推荐本文 |

• 作者：Xiao-yong Xu^a ; ^b ; ^{dreamxxy01@163.com} ; Han-ning Xiao^a ; Yi-ming Xu^b ; Ming-jun Zhang^b
• 关键词：Cu(I) complex ; Oxygen sensor ; Molecular sieve ; Polystyrene
• 刊名：Spectrochimica Acta Part A ; Molecular and Biomolecular Spectroscopy
• 出版年：2012
• 期刊代码：99_13861425
• 类别：ch
• 出版时间：September, 2012
• 卷：95
• 期：Complete
• 页码：427-434
• 文件大小：896 K

摘要

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)]BF₄, where POP is bis(2-(diphenylphosphanyl)phenyl) ether. The single-crystal structure, electronic nature and photophysical property of [Cu(Phen-Np-Et)(POP)]BF₄ are discussed in detail. It is found that the yellow emission from [Cu(Phen-Np-Et)(POP)]BF₄ owns a long excited state lifetime of 287 渭s under pure N₂ 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)]BF₄ 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)]BF₄/polystyrene and the [Cu(Phen-Np-Et)(POP)]BF₄/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.