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Plasmonic, excitonic and exciton-plasmonic photoinduced nanocomposites

机译：等离子体，激子和激子-等离激元光诱导纳米复合材料

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UV irradiation of materials consisting of a polymer matrix that possesses precursors of different kinds can result in creation of nanoparticles within the irradiated domains. Such photoinduced nanocomposites are promising for photonic applications due to the strong alteration of their optical properties compared to initial non-irradiated materials. We report our results on the synthesis and investigation of plasmonic, excitonic and exciton-plasmonic photoinduced nanocomposites. Plasmonic nanocomposites contain metal nanoparticles of noble metals with a pronounced plasmon resonance. Excitonic nanocomposites possess semiconductor nanoclusters (quantum dots). We consider the CdS-Au pair because the luminescent band of CdS nanoparticles enters the plasmon resonance band of gold nanoparticles. The obtaining of such particles within the same composite materials is promising for the creation of media with exciton-plasmon resonance. We demonstrate that it is possible to choose appropriate precursor species to obtain the initially transparent poly(methyl methacrylate) (PMMA) films containing both types of these molecules either separately or together. Proper irradiation of these materials by a light-emitting diode operating at the wavelength of 365 nm provides material alteration demonstrating light-induced optical absorption and photoluminescent properties typical for the corresponding nanoparticles. Thus, an exciton-plasmonic photoinduced nanocomposite is obtained. It is important that here we use the precursors that are different from those usually employed.
机译：由具有不同种类前体的聚合物基质组成的材料的紫外线照射可导致在照射区域内生成纳米颗粒。这种光诱导的纳米复合材料由于与最初未辐照的材料相比光学性能的强烈改变而有望用于光子学。我们报告了对等离激元，激子和激子-等离激元光诱导纳米复合材料的合成和研究的结果。等离子体纳米复合材料包含具有明显的等离子体共振的贵金属金属纳米颗粒。激子纳米复合材料具有半导体纳米团簇（量子点）。我们考虑使用CdS-Au对，因为CdS纳米颗粒的发光带进入了金纳米颗粒的等离子体共振带。在相同的复合材料中获得此类颗粒有望产生具有激子-等离子体共振的介质。我们证明有可能选择合适的前体物质以获得分别包含两种类型的这些分子的初始透明聚（甲基丙烯酸甲酯）（PMMA）膜，或者单独存在。通过在365 nm波长下工作的发光二极管对这些材料进行适当的辐照可提供材料变化，从而证明相应纳米粒子具有典型的光诱导光吸收和光致发光特性。因此，获得了激子-等离子体激元光诱导的纳米复合材料。重要的是在这里我们使用不同于通常使用的前体。

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  • 来源
    《Applied Physics》 |2016年第3期|193.1-193.6|共6页
  • 作者

    N. Bityurin; N. Ermolaev; A. A. Smirnov; A. Afanasiev; N. Agareva; T. Koryukina; V. Bredikhin; V. Kamensky; A. Pikulin; N. Sapogova;

  • 作者单位

    Institute of Applied Physics, RAS, Nizhniy Novgorod, Russia;

    Institute of Applied Physics, RAS, Nizhniy Novgorod, Russia;

    Institute of Applied Physics, RAS, Nizhniy Novgorod, Russia;

    Institute of Applied Physics, RAS, Nizhniy Novgorod, Russia;

    Institute of Applied Physics, RAS, Nizhniy Novgorod, Russia;

    Institute of Applied Physics, RAS, Nizhniy Novgorod, Russia;

    Institute of Applied Physics, RAS, Nizhniy Novgorod, Russia;

    Institute of Applied Physics, RAS, Nizhniy Novgorod, Russia;

    Institute of Applied Physics, RAS, Nizhniy Novgorod, Russia;

    Institute of Applied Physics, RAS, Nizhniy Novgorod, Russia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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