• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Optical Materials >Spectroscopy and optical properties of HITC-doped silica sol-gel glasses
【24h】

Spectroscopy and optical properties of HITC-doped silica sol-gel glasses

机译：掺杂HITC的二氧化硅溶胶-凝胶玻璃的光谱学和光学性质

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 photophysical behavior of the organic dye HITC (l,1',3,3,3',3'-hexamethylindotrycarbocyanine iodide) incorporated into silica gel glasses prepared from different starting compositions was studied in detail by fluorescence spectroscopy and lifetime measurements. The structural and morphologic characterization of the hosting matrix by FT- IR, 29~Si-NMR, UV--VIS--NIR spectroscopies, SEM and TEM techniques and measurements of the BET specific surface area, revealed the important influence on the optical properties of the water content in the starting solution of the different sol--gel compositions. An increase in the transmission at the UV cut-off as well at the NIR wavelengths was achieved in samples prepared from the specific composition of the gel produced from low water to monomer molar ratio (r_w/m = l*), and avoiding during the reaction water adsorption from the air. This specific method of preparation is adequate to achieve the chemical stabilization of the HITC dye in gel glasses. The pGOr mechanical properties of these gel glasses can be improved when drying is performed under controlled pressure and humidity conditions.
机译：通过荧光光谱法和寿命测量，详细研究了掺入由不同起始组合物制备的硅胶玻璃中的有机染料HITC（1,1'，3,3,3'，3'-六甲基吲哚碳菁碘化物）的光物理行为。 FT-IR，29〜Si-NMR，UV-VIS-NIR光谱，SEM和TEM技术以及BET比表面积的测量对基质的结构和形态进行了表征，揭示了对光学性质的重要影响不同溶胶-凝胶组合物起始溶液中水的含量在由低水与单体的摩尔比（r_w / m = l *）制成的凝胶的特定组成所制备的样品中，实现了在UV截止波长以及NIR波长处的透射率增加，并且避免了反应水从空气中吸收。这种特定的制备方法足以实现凝胶玻璃中HITC染料的化学稳定。当在受控的压力和湿度条件下进行干燥时，可以改善这些凝胶玻璃的pGOr机械性能。

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