摘要
本文阐述了La^(3+)、Gd^(3+)、Tb^(3+),Lu^(3+)、Y^(3+)对Eu^(3+)(Sm^(3+))-β-双酮-Phen-表面活性剂(有机溶剂)体系新的荧光增强效应——稀土元素共发光效应的特点,并在实验的基础上探讨这种共发光效应的机理。结果表明,La^(3+)、Gd^(3+)、Tb^(3+)、Lu^(3+)、Y^(3+)与该体系并未生成新的多核化合物。体系中β-双酮分子的三重态能级与La^(3+)、Gd^(3+)、Tb^(3+)、Lu^(3+)、Y^(3+)和能量授体Eu^(3+)、Sm^(3+)激发态能级之间良好匹配,以及水相聚集态和胶束中固溶体的存在是发生稀土共发光效应所必须具备的条件。
In this paper it is described that the mechanism of a new fluorescence-enhanced phenomenon, which was called as eoluminescenee effect, when La^(3+), Tb^(3+), Gd(3+), Lu^(3+) and Y^(3+) were added to the Eu^(3+)(Sm^(3+))-TTA-Phenanthroline-Surfartant fluorescence system. The test results show La^(3+), Tb^(3+), Gd^(3+), Lu^(3+) and Y^(3+) did not form a new compound with Eu^(3+)(Sm^(3+)-TTA-phen-Triton-X-100 system. The matching of the energy level between the triplet state of β-dione and the excited state of aforementioned rare earth ions and ion accepter of Eu^(3+) or Sm^(3+), and the presence of solid solution in the suspension colloid are the necessary condition for the columinescence effect of rare earth.
出处
《中国稀土学报》
CAS
CSCD
北大核心
1989年第2期73-78,共6页
Journal of the Chinese Society of Rare Earths
基金
中国科学院科学基金
