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Impediment of photo-oxidation in PPV nanocomposites doped by metal-coated silica nanoparticles

机译:金属包覆二氧化硅纳米粒子掺杂的PPV纳米复合材料中的光氧化阻碍

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We prepared poly(p-phenylenevinylene) nanocomposites doped with gold-coated silica (SiO_2-Au) nanoparticles and characterized photoluminescent properties of the nanocomposite films. The optical resonance of SiO_2-Au nanoparticles is specifically designed to interact with the triplet excitons of poly(p-phenylenevinylene), which was reported elsewhere (J. Colloid Interf. Sci., submitted for publication). The rate of photo-oxidation in poly(p-phenylenevinylene) was drastically reduced by doping with SiO_2-Au nanoparticles, as expected. This effect has important implications on the enhancement of lifetimes in conjugated polymer-based optoelectronic devices.
机译:我们制备了掺有金包被的二氧化硅(SiO_2-Au)纳米粒子的聚对苯撑乙烯撑纳米复合材料,并表征了该纳米复合薄膜的光致发光性能。 SiO_2-Au纳米粒子的光学共振经过专门设计,可与聚对苯撑亚乙烯基的三重态激子相互作用,这在其他地方已有报道(J. Colloid Interf。Sci。,已提交出版)。如预期的那样,通过掺杂SiO_2-Au纳米颗粒可以大大降低聚对苯撑亚乙烯基中的光氧化速率。该效果对提高基于共轭聚合物的光电器件的寿命具有重要意义。

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