Oxygen Sensing Properties of Cu(I) Complex/Polystyrene Composite Nanofibers Prepared by Electrospinning
The preparation and oxygen sensing properties of luminescence quenching oxygen sensing materials based on an electrospum composite nanofibers with [Cu(POP)DPPZ]BF4(POP = bis[2-(diphenylphosphino)phenyl]ether; DPPZ = dipyrido[2,3-a:3′,2′-c]phenazine) complex embedded within polystyrene (PS) matrix are described in this article. The luminescence of [Cu(POP)DPPZ]BF4 complex within the electrospum nanofibers can be efficiently quenched by oxygen with good sensitivity (I 0/I 100 = 5.54) and rapid response (3 s), which suggests that the Cu(I) complex/polystyrene composite nanofibers presented in this article can be used for developing oxygen sensors. The downward oxygen sensing Stern-Volmer plots can be attributed to the heterogeneous environment of the Cu(I) luminophore within the nanofibers. The high sensitivity is attributed to the low-dimensional structure of the nanofiber and its large surface area-to-volume ratio, which facilitates oxygen entry and diffusion.
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Document Type: Research Article
Publication date: 01 November 2011
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