...
首页> 外文期刊>New Journal of Chemistry >A coumarin-based sensitive and selective fluorescent sensor for copper(II) ions
【24h】

A coumarin-based sensitive and selective fluorescent sensor for copper(II) ions

机译:基于香豆素的铜离子敏感和选择性荧光传感器

获取原文
获取原文并翻译 | 示例
           

摘要

A new coumarin-derived fluorescent probe (1) exhibited significant fluorescence quenching in the presence of Cu~(2+) ions. Other metal ions, e.g. Ag~+, Ca~(2+), Cd~(2+), Co~(2+), Fe~(2+), Fe~(E+), Hg~(2+), K~+, Mg~(2+), Mn~(2+), Ni~(2+), Pb~(2+), and Zn~(2+), produced only minor changes in the fluorescence of chemosensor 1. The binding ratio of the chemosensor-Cu~(2+) complexes was found to be 2:1, according to Job plot experiments. The association constant (K_a) for Cu~(2+) binding with chemosensor 1 was found to be 9.56 x 10~9 M~(-2). The maximum fluorescence quenching caused by Cu~(2+) binding with chemosensor 1 occurred over a pH range of 5-9. Moreover, fluorescence microscopy experiments showed that chemosensor 1 could be used as a fluorescent probe for detecting Cu~(2+) in living cells.
机译:一种新的香豆素来源的荧光探针(1)在存在Cu〜(2+)离子的情况下表现出明显的荧光猝灭。其他金属离子,例如Ag〜+,Ca〜(2 +),Cd〜(2 +),Co〜(2 +),Fe〜(2 +),Fe〜(E +),Hg〜(2 +),K〜+,Mg 〜(2 +),Mn〜(2 +),Ni〜(2 +),Pb〜(2+)和Zn〜(2+)在化学传感器1的荧光中仅产生很小的变化。根据Job plot实验,发现化学传感器-Cu〜(2+)的络合物为2:1。发现Cu〜(2+)与化学传感器1结合的缔合常数(K_a)为9.56 x 10〜9 M〜(-2)。 Cu〜(2+)与化学传感器1结合引起的最大荧光猝灭发生在5-9的pH范围内。此外,荧光显微镜实验表明,化学传感器1可用作检测活细胞中Cu〜(2+)的荧光探针。

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