ACS Appl Mater Interfaces. 2013 May 22;5(10):4011-6. doi: 10.1021/am4005336. Epub 2013 May 9.
Poly(phenylenevinylene)/polyimide (PPV/PI) and poly(phenylenevinylene)/ polymethylmethacrylate (PPV/PMMA) fibrous membranes without any deliberately introduced receptors were prepared as fluorescence sensing materials through electrospinning, followed by thermal treatment. Both of these membranes displayed higher sensitivity toward most cations compared to the corresponding spin-coated films. PPV/PMMA membranes were more sensitive than PPV/PI membranes toward Cu(2+) and Fe(3+). About 4.5 fold of intensity enhancement upon 20 nM of Cu(2+), 80% of quenching upon 20 nM of Fe(3+) with fast response and simple regeneration were realized for PPV/PMMA membrane. The preliminary investigation into the mechanism revealed that the properties of the polymer matrix and thermal treatment of the membrane played important roles in the sensing performance.
聚对苯乙炔/聚酰亚胺（PPV/PI）和聚对苯乙炔/聚甲基丙烯酸甲酯（PPV/PMMA）纤维膜无需任何故意引入的受体，通过静电纺丝和随后的热处理制备成荧光传感材料。与相应的旋涂薄膜相比，这两种膜对大多数阳离子都表现出更高的灵敏度。PPV/PMMA 膜对 Cu(2+)和 Fe(3+)的灵敏度高于 PPV/PI 膜。对于 PPV/PMMA 膜，在 20 nM 的 Cu(2+)存在下，强度增强约 4.5 倍，在 20 nM 的 Fe(3+)存在下，猝灭 80%，具有快速响应和简单再生的能力。对机制的初步研究表明，聚合物基质的性质和膜的热处理在传感性能中起着重要作用。
