Electrospinning fabrication and oxygen sensing properties of Cu(I) complex-polystyrene composite microfibrous membranes |
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Authors: | Li-Yan Wang Yun Xu Ning Zhao |
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Institution: | a Department of Orthodontics, School of Stomatology, the Fourth Military Medical University, XiAn, China b Department of Orthodontics, School of Stomatology, KunMing Medical College, Kunming, China c Department of Orthodontics, School of Stomatology, West China College, SiChuan University, ChengDu, China |
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Abstract: | In this paper, a phosphorescent Cu(I) complex of Cu(POP)(ECI-Phen)]BF4, where POP=bis2-(diphenylphosphino)phenyl]ether, and ECI-Phen=1-ethyl-2-(N-ethyl-carbazole-yl-4-)imidazo4,5-f]1,10-phenanthroline, is incorporated into a polystyrene matrix of polystyrene (PS) to form microfibers membranes. The possibility of using the resulted composite microfibrous membranes as an optical oxygen sensor is explored. Good linearity and short response time are obtained with a sensitivity of 9.8. These results suggest that phosphorescent Cu(POP)(ECI-Phen)]BF4 is a promising candidate for oxygen-sensors and PS is an excellent matrix for oxygen sensing material because it owns a large surface-area-to-volume ratio and can supply a homogeneous matrix for probe molecules. Further analysis suggests that the molecular structure of diamine ligand in Cu(I) complexes is critical for sensitivity due to the characteristic electronic structure of excited state Cu(I) complexes. |
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Keywords: | Thin films Chemical synthesis Optical properties Luminescence Optical spectroscopy |
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