• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Energy transfer to Eu(III) in the solid-state low-density polyethylene-poly(acrylic acid) and low-density polyethylene-Fe2O3-poly(acrylic acid) matrices
【24h】

Energy transfer to Eu(III) in the solid-state low-density polyethylene-poly(acrylic acid) and low-density polyethylene-Fe2O3-poly(acrylic acid) matrices

机译：在固态低密度聚乙烯-聚丙烯酸和低密度聚乙烯-Fe2O3-聚丙烯酸中的能量转移至Eu（III）

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

Ion exchange between H+ and Eu3+ and/or Tb3+ was studied in the material modified by in situ sorption and thermal polymerization of acrylic acid in low-density polyethylene (LDPE-PAA) and in the composite system LDPE-Fe2O3-PAA. Fluorescence spectroscopy showed evidence of Eu3+ and/or Tb3+ ion exchanges in these materials. The matrix LDPE-PAA after Eu(III) ion exchange presented luminescence (excitation 265 nm). This was explained by an energy-transfer process from the matrix LDPE-PAA to Eu3+ ions. The LDPE-PAA matrix after simultaneous Eu3+/Tb3+ ion exchange exhibited Eu3+ and Tb3+ ion luminescence (excitation 265 nm), confirming an energy-transfer process from LDPE-PAA to Eu3+ ions in LDPE-PAA-Eu3+-Tb3+ matrix. Fe2O3 in LDPE-Fe2O3-PAA quenched the matrix for excitation at 265 nm and no emission at the region 400 nm was observed. The luminescence of Tb3+ ions in the matrix LDPE-Fe2O3-PAA-Tb3+ (excitation 265 nm) was partially quenched by Fe2O3. However, a weak emission of Eu3+ ions was observed (excitation 265 nm) in the matrix LDPE-Fe2O3-PAA after simultaneous Eu3+ and Tb3+ ion exchanges, suggesting an energy transfer from Tb3+ to Eu3+ ions. (C) 2000 John Wiley & Sons, Inc. [References: 17]
机译：在丙烯酸​​在低密度聚乙烯（LDPE-PAA）和复合体系LDPE-Fe2O3-PAA中原位吸附和热聚合改性的材料中，研究了H +与Eu3 +和/或Tb3 +之间的离子交换。荧光光谱显示这些材料中Eu3 +和/或Tb3 +离子交换的证据。 Eu（III）离子交换后的基质LDPE-PAA呈现发光（激发265 nm）。这是通过从基体LDPE-PAA到Eu3 +离子的能量转移过程来解释的。在同时进行Eu3 + / Tb3 +离子交换后的LDPE-PAA基质表现出Eu3 +和Tb3 +离子发光（激发265 nm），证实了LDPE-PAA-Eu3 + -Tb3 +基质中从LDPE-PAA到Eu3 +离子的能量转移过程。 LDPE-Fe2O3-PAA中的Fe2O3使基质在265 nm处激发猝灭，在400 nm处未观察到发射。基质LDPE-Fe2O3-PAA-Tb3 +中的Tb3 +离子的发光（激发265 nm）被Fe2O3部分淬灭。然而，在同时交换Eu3 +和Tb3 +离子后，在基质LDPE-Fe2O3-PAA中观察到Eu3 +离子的发射微弱（激发265 nm），这表明能量从Tb3 +转移到Eu3 +离子。 （C）2000 John Wiley＆Sons，Inc. [参考：17]

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