• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Synthesis, characterization and optical properties of novel dendronized azo-dyes containing a fullerene C60 unit and well-defined oligo(ethylene glycol) segments
【24h】

Synthesis, characterization and optical properties of novel dendronized azo-dyes containing a fullerene C60 unit and well-defined oligo(ethylene glycol) segments

机译：含有富勒烯C 60 单元和明确定义的低聚（乙二醇）链段的新型树枝状偶氮染料的合成，表征和光学性质

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Herein, we report the preparation and characterization of a novel series of dendronized azo-dyes containing a fullerene C60 unit and well-defined oligo(ethylene glycol) spacers. The azobenzene units present in these dyes were substituted in the 4′-position with different functional groups (–H, –OCH3, –C4H9, –CN and –NO2). The optical properties of these compounds were studied by absorption spectroscopy as a function of the dipole moment of the azobenzene moieties. All fullerene C60-azobenzene derivatives exhibited trans–cis photoisomerization and photoprotonation under irradiation with UV-light. The results were compared to those obtained with their precursor azo-dyes without fullerene C60. It was found that the presence of the fullerene unit significantly quenches the photoisomerization yield, whereas the photoprotonation was not affected by the presence of this chromophore.
机译：在本文中，我们报告了一系列新型的树枝状偶氮染料的制备和表征，这些染料含有富勒烯C 60 单元和定义明确的低聚（乙二醇）间隔基。这些染料中存在的偶氮苯单元在4'-位被不同的官能团取代（–H，–OCH 3 ，– C 4 H 9 ，– CN和–NO 2 ）。通过吸收光谱研究了这些化合物的光学性质，其是偶氮苯部分的偶极矩的函数。所有富勒烯C 60 -偶氮苯衍生物在紫外光照射下均表现出 trans - cis 光异构化和光子化。将结果与使用前体偶氮染料而不使用富勒烯C 60 的结果进行比较。已经发现，富勒烯单元的存在显着终止了光异构化的产率，而光子化不受该发色团的存在的影响。

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