...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Linear and non-linear optical properties of 2,5-disubstituted pyrroles supported by a catalyst-free SiO2 sonogel network
【24h】

Linear and non-linear optical properties of 2,5-disubstituted pyrroles supported by a catalyst-free SiO2 sonogel network

机译：无催化剂的SiO2声凝胶网络支撑的2,5-二取代吡咯的线性和非线性光学性质

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The preparation and optical characterization of pyrrole based sol-gel hybrid materials generated by ultrasonic irradiation (Sonogel composites) are presented in this work. Pyrrole compounds were recently synthesized in our group by a modification of the Schulte-Reisch reaction: these molecular systems were dissolved at different concentrations in tetrahydrofuran (THF) and optimally embedded into a catalyst-free SiO2, sonogel network. For this purpose, we exploited the novel catalyst-free (CF) sonolysis route to produce highly pure Sol-gel glasses, generated via sonochemical reactions. This approach has been recently developed in our research group and has been successfully implemented to develop several hybrid composites for optical applications. By this method, homogeneous and stable solid-state hybrid samples suitable for optical characterization can be produced. The high porosity exhibited by the sonogel matrix allowed us to prepare several pyrrole doped composites with variable dopant concentration. The linear and nonlinear optical (NLO) properties of these amorphous hybrid structures were determined by absorption- and photoluminescent (PL)-spectroscopies, and by the optical third harmonic generation (THG) techniques, respectively. The implemented catalyst-free sonolysis route produced SiO2-host networks of high chemical and optical purity, suitable for optical and photonic applications. (C) 2007 Elsevier B.V. All rights reserved.
机译：这项工作介绍了由超声波辐照产生的吡咯基溶胶-凝胶杂化材料（Sonogel复合材料）的制备和光学表征。最近，我们小组通过修改Schulte-Reisch反应合成了吡咯化合物：这些分子系统以不同的浓度溶于四氢呋喃（THF）中，并最佳地嵌入无催化剂的SiO2声凝胶网络中。为此，我们开发了新颖的无催化剂（CF）声解路线，以生产通过声化学反应生成的高纯度溶胶凝胶玻璃。我们的研究小组最近开发了这种方法，并已成功实施该方法，以开发用于光学应用的多种混合复合材料。通过这种方法，可以生产出适用于光学表征的均匀，稳定的固态混合样品。声波凝胶基质表现出的高孔隙率使我们能够制备几种掺杂剂浓度可变的吡咯掺杂的复合材料。这些非晶杂化结构的线性和非线性光学（NLO）特性分别通过吸收光谱和光致发光（PL）光谱以及光学三次谐波生成（THG）技术确定。实施的无催化剂声分解路线产生了具有高化学和光学纯度的SiO2主体网络，适用于光学和光子应用。 （C）2007 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号