...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physical chemistry chemical physics: PCCP >Emission ellipsometry used to probe aggregation of the luminescent 2,1,3-benzothiadiazole dyes and ordering in an E7 liquid crystal matrix
【24h】

Emission ellipsometry used to probe aggregation of the luminescent 2,1,3-benzothiadiazole dyes and ordering in an E7 liquid crystal matrix

机译：发射椭偏仪用于探测发光的2,1,3-苯并噻二唑染料的聚集和在E7液晶矩阵中的有序性

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

The incorporation of dyes in liquid crystal matrices has been exploited to produce enhanced displays, but it can also be used to probe ordering in liquid crystals and to assess intermolecutar interactions and dye aggregation. In this study, we investigated polarized absorption and emission of the luminescent dyes 4,7-bis(2-(4-(decyloxy)phenyl)ethynyl)-[2,1,31-benzothiadiazole (1A) and 4,7-bis{2-[4-(4-decylpiperazin-1-yl)phenyllethynylH2,l,31-benzothiadiazole (5A) in the E7~R liquid crystal. The electronic structures of both 1A and 5A dyes were affected by the matrix and by the analysis of the line shape of emission we could determine that the dyes form J aggregates. This achievement is significant because obtaining this type of information for small molecules requires ordered matrices, which is difficult to obtain for these dyes. Using emission ellipsometry we were able to determine the ordering of the E7 molecules, but this was possible only with the larger 5A dye. The smaller 1A was not entirely ordered in the E7 matrix and this calls for caution in other types of work where dopants are used as probes to infer the properties of the matrix. The emission ellipsometry data for the dyes allowed us to detect the enhanced birefringence in the matrix, thus confirming the theoretical prediction.
机译：染料在液晶矩阵中的掺入已被用来产生增强的显示效果，但它也可用于探测液晶中的有序排列以及评估分子间的相互作用和染料聚集。在这项研究中，我们研究了发光染料4,7-双（2-（4-（癸氧基氧基）苯基）乙炔基）-[2,1,31-苯并噻二唑（1A）和4,7-双在E7〜R液晶中的{2- [4-（4-癸基哌嗪-1-基）苯基]乙炔基H2,1,31-苯并噻二唑（5A）。 1A和5A染料的电子结构都受到基质的影响，并且通过分析发射的线形，我们可以确定染料形成J聚集体。这一成就意义重大，因为获取小分子的此类信息需要有序的基质，而这些染料很难获得。使用发射椭圆光度法，我们能够确定E7分子的顺序，但是只有较大的5A染料才有可能。较小的1A在E7矩阵中并不是完全有序的，这在使用掺杂剂作为探针推断矩阵性质的其他类型的工作中需要引起注意。染料的发射椭偏数据使我们能够检测到基质中增强的双折射，从而证实了理论预测。

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