• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chemistry: A European journal >New Dyes Based on Amino-Substituted Acridizinium Salts-Synthesis and Exceptional Photochemical Properties
【24h】

New Dyes Based on Amino-Substituted Acridizinium Salts-Synthesis and Exceptional Photochemical Properties

机译：基于氨基取代的cri啶鎓盐的新型染料的合成和优异的光化学性质

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 novel amino-substituted acridizinium salts 5a and 5b represent a new class of cyanine dyes which exhibit intense color along with efficient fluorescence properties. These dyes show moderate solvatochromism in their absorption and emisssion spectra. The absorption and emission shifts of the two chromophores display a reasonable correlation with solvent parameters such as donor and acceptor number. It was found that the dyes 5a and 5b interact with DNA, with quenching of the band intensies accompanied with a red shift of the absorption and emission bands. Moreover, irradiation of salts 5a and 5b in the presence of DNA results in DNA damage. Solution photolysis of acridizinium salt 5a gave the head-to-tail dimers as the major products (>95%), whereas the acridizinium salt 5b afforded the anti-head-to-tail dimer along with both head-to-head isomes. The latter are thermally labile and rapidly revert to the monomer.
机译：新型的氨基取代的cri啶鎓盐5a和5b代表一类新型的花青染料，其显示出强烈的颜色以及有效的荧光性质。这些染料在其吸收和发射光谱中显示出中等的溶剂变色现象。两种生色团的吸收和发射位移显示出与溶剂参数（例如供体和受体数）的合理相关性。发现染料5a和5b与DNA相互作用，带强度猝灭，同时吸收和发射带发生红移。此外，在DNA存在下照射盐5a和5b会导致DNA损伤。 cri啶鎓盐5a的溶液光解产生了从头到尾的二聚体作为主要产物（> 95％），而a啶鎓盐5b则提供了反头对尾的二聚体以及两个头对头的等位基因。后者是热不稳定的，并迅速还原为单体。

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