• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Acta crystallographica. Section C, Structural chemistry. >Structural and spectroscopic investigations on the quenching free luminescence of europium oxalate nanocrystals
【24h】

Structural and spectroscopic investigations on the quenching free luminescence of europium oxalate nanocrystals

机译：草酸铝酸铕淬火的自由发光的结构和光谱研究

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 structural features leading to the intense quenching free luminescence exhibited by europium oxalate nanocrystals, poly[[hexaaquatri‐μ 2 ‐oxalato‐dieuropium] 4.34‐hydrate], {[Eu 2 (C 2 O 4 ) 3 (H 2 O) 6 ]·4.34H 2 O} n , is the focal point of this report. Europium oxalate nanocrystals were synthesized by a simple microwave‐assisted co‐precipitation method. Powder X‐ray diffraction analysis revealed the monoclinic structure of the nanocrystals and the phase purity. The morphology and particle size were examined by transmission electron microscopy (TEM) analysis. Luminescence measurements on a series of samples of La 2– x Eu x (C 2 O 4 ) 3 ·10H 2 O, with x varying in the range 0.1 to 2, established the quenching free nature exhibited by the europium oxalate nanocrystals. A single‐crystal structure analysis was carried out and the quenching free luminescence is explained on the basis of the crystal structure. A detailed photoluminescence characterization was carried out using excitation and emission studies, decay analysis, and CIE coordinate and colour purity evaluation. The various spectroscopic parameters were evaluated by Judd–Ofelt theoretical analysis and the results are discussed on the basis of the crystal structure analysis.
机译：通过草酸铕纳米晶体，聚[[六曲氏素-M 2-甲醛 - 氨基钙] 4.34-水合物]，{[Eu 2（C 2 O 4）3（H 2 O）6（H 2 O）6，结构特征]·4.34H 2 o} n，是本报告的重点。通过简单的微波辅助共沉淀法合成铕纳米晶体。粉末X射线衍射分析显示纳米晶体的单斜晶体结构和相纯度。通过透射电子显微镜（TEM）分析检查形态和粒度。发光测量在一系列La 2-x Eux（C 2 O 4）3·10H 2 O的样品上，x变化在0.1至2的范围内，建立了由铕纳米晶体展示的淬火自由性。进行单晶结构分析，并根据晶体结构解释淬火的游离发光。使用激发和排放研究，衰减分析和CIE坐标和颜色纯度评估进行详细的光致发光表征。通过Judd-elt理论分析评估各种光谱参数，并在晶体结构分析的基础上讨论结果。

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