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1,6-二[(2'-苄胺甲酰基)苯甲氧基]己烷混合稀土配合物中镧、钆、钇对铕和铽荧光性能的影响
  • ISSN号:1000-7032
  • 期刊名称:《发光学报》
  • 时间:0
  • 分类:O482.31[理学—固体物理;理学—物理]
  • 作者机构:[1]中国科学院兰州化学物理研究所固体润滑国家重点实验室,甘肃兰州730000, [2]中国科学院研究生院,北京100049
  • 相关基金:国家创新研究群体基金(50421502);国家自然科学基金(50575217)资助项目
中文摘要:

在氯仿和乙酸乙酯溶液中合成了1,6-二[(2’-苄胺甲酰基)苯甲氧基]己烷(L)的铕和铽的配合物,及其与La(Ⅲ)、Gd(Ⅲ)、Y(Ⅲ)的混合配合物。元素分析数据表明单一稀土硝酸盐与配体形成的是2:3型的配合物;通过红外光谱表征,混合配合物和单一配合物具有相似的配位结构。紫外光谱的数据表明,掺杂数量相同的其他离子会干扰Eu和Tb配合物对紫外光的吸收。对混合配合物的荧光进行了详细的研究,结果表明:La(Ⅲ)、Gd(Ⅲ)、Y(Ⅲ)对铕和铽的发光有显著的增强作用,但对其发射峰位的影响不大,三种离子中Gd^3+的增强作用最大,且掺杂量对荧光增强作用也有影响。

英文摘要:

The study of the rare earth complexes continues to be an active research area, which may be attributed to the specific spectroscopic and magnetic properties of rare earth ions and the abundance of rare earth elements in our country. Amide type podands, which are flexible in structure and have terminal-group effects', will shield the encapsulated rare earth ion from interaction with the surroundings effectively, and thus achieve strong luminescent properties. The fluorescence intensities of Eu and Tb complexes, which exhibit the characteristic emissions of Eu^3+ and Tb^3+ respectively, can be increased by mixing with some non-fluorescent ions quantificationally and their costs can be also decreased. So, in our work the white complexes of Eu^3+ , Tb^3+, 1/2Eu^3+ and 1/2RE^3+, 1/2Tb^3+ and 1/2RE^3+ (RE^3+ = Ga^3+, Gd^3+, Y^3+ ) with 1,6-bis[(2'- benzylaminoformyl) phenoxyl] hexane (L) have been synthesized in the solution of ethyl acetate and chloroform. The elemental analysis shows that Eu and Tb complexes conform to a 2:3 metal-to-ligand stoichiometries 2RE( NO3 ) 3 · 3L · nH2O (RE = La, n = 2 ; RE = Eu, Gd, Tb, Y,n = 4). Their IR spectra are recorded on a Bruke FTS66V/S spectrophotometer with KBr pellet in the range of 400 - 4 500 cm^- 1. The results indicate that all complexes have similar IR spectra, of which the characteristic bands have similar shifts, suggesting that they have a similar coordination structure. Their UV-VIS spectra are recorded on a Hitachi U-3010 spectrophotometer and show that mixed with identical molar ratio of La, the absorbance of Eu-La mixed complex is lower than that of Eu complex. Fluorescence spectra of the complexes were carried out on a Hitachi F4500 spectrophotometer at room temperature. The excitation and emission slit widths are 1.0 nm. The best excitation wavelengths for Eu and Tb complexes are 396 nm and 320 nm respectively. It can be concluded from the results that mixed with identical molar ratio of La^3+ , Gd^3+ and Y^

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期刊信息
  • 《发光学报》
  • 中国科技核心期刊
  • 主管单位:中国科学院
  • 主办单位:中国物理学会发光分会 中国科学院长春光学精密机械与物理研究所
  • 主编:申德振
  • 地址:长春市东南湖大路3888号
  • 邮编:130033
  • 邮箱:fgxbt@126.com
  • 电话:0431-86176862
  • 国际标准刊号:ISSN:1000-7032
  • 国内统一刊号:ISSN:22-1116/O4
  • 邮发代号:12-312
  • 获奖情况:
  • 物理学类核心期刊,2000年获中国科学院优秀期刊二等奖,中国期刊方阵“双效”期刊
  • 国内外数据库收录:
  • 美国化学文摘(网络版),荷兰文摘与引文数据库,美国工程索引,美国剑桥科学文摘,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊(2004版),中国北大核心期刊(2008版),中国北大核心期刊(2011版),中国北大核心期刊(2014版),中国北大核心期刊(2000版)
  • 被引量:7320