• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced Functional Materials >Exceptional Oxygen Sensing Properties of New Blue Light-Excitable Highly Luminescent Europium(Ⅲ) and Gadolinium(Ⅲ) Complexes
【24h】

Exceptional Oxygen Sensing Properties of New Blue Light-Excitable Highly Luminescent Europium(Ⅲ) and Gadolinium(Ⅲ) Complexes

机译：新型蓝光可激发的高发光Euro（Ⅲ）和d（Ⅲ）配合物的出色氧传感特性

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

New europium(Ⅲ) and gadolinium(Ⅲ) complexes bearing 8-hydroxyphenal-enone antenna combine efficient absorption in the blue part of the spectrum and strong emission in polymers at room temperature. The Eu(Ⅲ) complexes show characteristic red luminescence whereas the Cd(Ⅲ) dyes are strongly phosphorescent The luminescence quantum yields are about 2096 for the Eu(Ⅲ) complexes and 50% for the Cd(Ⅲ) dyes. In contrast to most state-of-the-art Eu(Ⅲ) complexes the new dyes are quenched very efficiently by molecular oxygen. The luminescence decay times of the Cd(Ⅲ) complexes exceed 1 ms which ensures exceptional sensitivity even in polymers of moderate oxygen permeability. These sensors are particularly suitable for trace oxygen sensing and may be good substitutes for Pd(Ⅱ) porphyrins. The photophysical and sensing properties can be tuned by varying the nature of the fourth ligand. The narrow-band emission of the Eu(Ⅲ) allows efficient elimination of the background light and autofluorescence and is also very attractive for use e.g., in multi-analyte sensors. The highly photostable indicators incorporated in nanoparticles are promising for imaging applications. Due to the straightforward preparation and low cost of starting materials the new dyes represent a promising alternative to the state-of-the-art oxygen indicators particularly for such applications as, e.g., food packaging.
机译：带有8-羟基酚-烯酮天线的新型euro（Ⅲ）和g（Ⅲ）配合物在室温下有效吸收了光谱的蓝色部分并在聚合物中产生了强发射。 Eu（Ⅲ）配合物表现出特征性的红色发光，而Cd（Ⅲ）染料具有强烈的磷光性。Eu（Ⅲ）配合物的发光量子产率约为2096，Cd（Ⅲ）染料为50％。与大多数最先进的Eu（Ⅲ）配合物相比，新型染料可通过分子氧非常有效地猝灭。 Cd（Ⅲ）配合物的发光衰减时间超过1毫秒，即使在中等透氧性的聚合物中也能确保出色的灵敏度。这些传感器特别适用于痕量氧感测，并且可以很好地替代Pd（Ⅱ）卟啉。可以通过改变第四配体的性质来调节光物理和传感特性。 Eu（Ⅲ）的窄带发射可有效消除背景光和自发荧光，并且对于例如在多分析物传感器中的使用也非常有吸引力。包含在纳米颗粒中的高度光稳定的指示剂有望用于成像应用。由于原料的直接制备和低成本，新染料代表了最先进的氧指示剂的有希望的替代物，特别是对于诸如食品包装等应用。

著录项

  • 来源
    《Advanced Functional Materials》 |2014年第41期|6548-6560|共13页
  • 作者

    Sergey M. Borisov; Roland Fischer; Robert Saf; Ingo Klimant;

  • 作者单位

    Institute of Analytical Chemistry and Food Chemistry Graz University of Technology NAWI Graz Stremayrgasse 9 8010, Graz, Austria;

    Institute of Inorganic Chemistry Graz University of Technology NAWI Graz Stremayrgasse 9 8010, Graz, Austria;

    Institute of Chemistry and Technology of Materials Graz University of Technology NAWI Graz Stremayrgasse 9 8010, Graz, Austria;

    Institute of Analytical Chemistry and Food Chemistry Graz University of Technology NAWI Graz Stremayrgasse 9 8010, Graz, Austria;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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