• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Optoelectrical, morphological and mechanical features of nitrophenyl supported poly(1,3,4-oxadiazole)s and their nanocomposites with TiO2
【24h】

Optoelectrical, morphological and mechanical features of nitrophenyl supported poly(1,3,4-oxadiazole)s and their nanocomposites with TiO2

机译：硝基苯基负载的聚（1,3,4-恶二唑）及其与TiO2的纳米复合材料的光电，形态和机械特性

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

Two nitro phenyl supported poly(1,3,4-oxadiazole)s viz.; poly(pyridine(2-nitrophenyl)-1,3,4-oxadiazole) [PPNO] and poly(2-(o-nitrophenyl)-5-phenyl-1,3,4-oxadiazole) [PNPPO] were initially synthesized by a dehydrocyclization reaction, and then reinforced with TiO2 nanoparticles. They were characterized in terms of optoelectrical, morphological and mechanical properties in order to examine their suitability to function as active or electron transport layers in polymer light emitting diodes (PLEDs). The nanocomposites have been found to possess charge transfer characteristics from the macromolecular systems (PPNO or PNPPO) to TiO2 particles, upon photo-excitation. Cyclic voltammetric examinations indicated a reduction in band gap for PPNO and PNPPO in the presence of TiO2 nanoparticles. The nonlinear optical responses and optical limiting behavior of PPNO, PNPPO and their nanocomposites were also evaluated by the Z-scan technique, using nanosecond Nd: YAG, 532 nm laser radiations. In view of user-friendly device fabrication, flexible films of PPNO and PNPPO were fabricated by blending the composites with 2 wt% of poly(methylmethacrylate). Along with good mechanical properties, PPNO and PNPPO showed high fluorescent quantum yield, presenting them as promising candidates for PLED fabrication. Interestingly, the current-voltage (I-V) characteristics propose their additional application as semiconducting packaging materials for optoelectronic devices.
机译：两个硝基苯基负载的聚（1,3,4-恶二唑），即;聚（吡啶（2-硝基苯基）-1,3,4-恶二唑）[PPNO]和聚（2-（邻硝基苯基）-5-苯基-1,3,4-恶二唑）[PNPPO]的合成如下进行脱氢环化反应，然后用TiO2纳米颗粒增强。根据光电，形态和机械性能对它们进行了表征，以检查其在聚合物发光二极管（PLED）中用作有源层或电子传输层的适用性。已经发现，在光激发下，纳米复合材料具有从大分子系统（PPNO或PNPPO）到TiO2颗粒的电荷转移特性。循环伏安法检查表明，在存在TiO2纳米粒子的情况下，PPNO和PNPPO的带隙减小。还使用Z扫描技术，使用纳秒级Nd：YAG，532 nm激光辐射，评估了PPNO，PNPPO及其纳米复合材料的非线性光学响应和光学极限行为。考虑到用户友好的装置制造，通过将复合物与2wt％的聚（甲基丙烯酸甲酯）共混来制造PPNO和PNPPO的柔性膜。除了良好的机械性能外，PPNO和PNPPO还显示出高的荧光量子产率，使其成为PLED制造的有希望的候选者。有趣的是，电流-电压（I-V）特性提出了它们的附加应用，作为光电设备的半导体封装材料。

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