Citation:
HUANG Yong, WANG Wei, YAN Lan, YANG Ru-Dong, YU Kai-Beib. Crystal Structure of a Cryptand and Fluorescence Properties of Its Cryptates with Part Lanthanide(Ⅲ) Nitrates[J]. Chinese Journal of Applied Chemistry,
;2005, 22(9): 1030-1032.
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The crystal structure of cryptand L was determined via X-ray diffraction analysis.Four solid cryptates of cryptand(L) with M(Ⅲ) nitrates(M=Sm,Eu,Tb,Dy) were prepared and characterized by means of fluorescence spectroscopy.The fluorescence properties of those complexes show that all the cryptates have stronger luminescence intensity.That the complex of Eu(Ⅲ) has the strongest luminescence intensity(among) them shows that the cryptand's triplet state energy matches with the vibration energy level of Eu(Ⅲ).The difference between fluorescence intensities of L cryptates and other series of cryptates implies that the energy transfer from L is more effective in fluorescence and antenna when L has a more flexibility structure.
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