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Dye-Doped POSS Solutions: Random Nanomaterials for Laser Emission

机译：染料掺杂的POSS解决方案：用于激光发射的随机纳米材料

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摘要

Optical properties of new materials based on nanometer-sized polyhedral oligomeric silsesquioxanes (POSS) have been of increasing interest for both fundamental and practical reasons, largely because of their novel applications in photonics and electronic devices. The presence of POSS enhances significantly the thermal, mechanical, and physical properties of the final materials, opening the challenge to synthesize new luminescent hybrid matrices with optoelectronic properties comparable to dendronized or grafted conjugated polymers. POSS has a compact hybrid structure with an inorganic core made up of silicon and oxygen (SiO_(1.5))_n externally surrounded by non-reactive or reactive polymerizable organic ligands, R. The type and number of substituents control the interactions between the organic ligand and the medium denning the compatibility, and thus the final properties of the POSS-modified systems. Thus, POSS nanoparticles can be dispersed at a molecular level (1-3 nm) and, because of their synthetically well-controlled functionalization, can be incorporated into polymers by different polymerization techniques with minimal processing disruption. This excellent dispersion at the molecular scale prevents phase separation and assures the macroscopic homogeneity of the materials. In this way, new optical hybrid materials based on POSS nanoparticles as the inorganic part overcome some of the most important limitations intrinsic to sol-gel hybrid composites while maintaining the physical, chemical, and mechanical combined advantages of organic-inorganic systems.
机译：出于基本和实际原因，基于纳米级多面体低聚倍半硅氧烷（POSS）的新材料的光学特性引起了人们的极大兴趣，这在很大程度上是因为它们在光子学和电子设备中的新颖应用。 POSS的存在显着提高了最终材料的热，机械和物理性能，这给合成具有与树枝状或接枝共轭聚合物可比的光电特性的新型发光杂化矩阵提出了挑战。 POSS具有紧凑的杂化结构，其无机核由硅和氧（SiO_（1.5））_ n组成，外部被非反应性或反应性可聚合有机配体R包围。取代基的类型和数量控制有机配体之间的相互作用以及介质降低了兼容性，进而降低了POSS改性系统的最终性能。因此，POSS纳米颗粒可以以分子水平（1-3 nm）分散，并且由于其合成良好控制的功能化，可以通过不同的聚合技术将其掺入聚合物中，而对工艺的破坏最小。这种出色的分子水平分散性可防止相分离并确保材料的宏观均匀性。这样，基于POSS纳米粒子作为无机部分的新型光学杂化材料克服了溶胶-凝胶杂化复合材料固有的一些最重要的局限性，同时又保持了有机-无机系统的物理，化学和机械综合优势。

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  • 来源
    《Advanced Materials》 |2009年第41期|4163-4166|共4页
  • 作者

    Angel Costela; Inmaculada Garcia-Moreno; Luis Cerdan; Virginia Martin; Olga Garcia; Roberto Sastre;

  • 作者单位

    Institute de Quimica-Fisica 'Rocasolano' (CSIC) 28006 Madrid (Spain);

    Institute de Quimica-Fisica 'Rocasolano' (CSIC) 28006 Madrid (Spain);

    Institute de Quimica-Fisica 'Rocasolano' (CSIC) 28006 Madrid (Spain);

    Institute de Quimica-Fisica 'Rocasolano' (CSIC) 28006 Madrid (Spain);

    Dpto. Fotoquimica de Polimeros Institute de Ciencia y Tecnologia de Polimeros (CSIC) 28006 Madrid (Spain);

    Dpto. Fotoquimica de Polimeros Institute de Ciencia y Tecnologia de Polimeros (CSIC) 28006 Madrid (Spain);

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