[Preparation and properties of complex of europium lanthanum with crown ether and p-phthalic acid]

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[Preparation and properties of complex of europium lanthanum with crown ether and p-phthalic acid] Abstract Text:

Yong-lian Zhao,Feng-ying Zhao,Zhong-xi Hao,

Two complexes of crown ether europium (EuL) and crown ether lanthanum (LaL) were synthesized by europium perchlorate and lanthanum perchlorate with 18-crown-6(18-C-6) respectively. The heternuclear complexes of europium-lanthanum p-phthalic acid crown ether were prepared by the two complexes (EuL and LaL) with p-phthalic acid. The elemental analysis shows that its composition is EuLaL2L'(ClO4)4.6H2O(L = 18-C-6 and L' = p-C6H4 (COO)2). The IR spectra, UV-spectra and molar conductor indicate that both ligands (L and L') coordinate rare earth ions (Eu3+ and La3+), but perchlorate group is free. The fluorescence spectra show that the fluorescence intensities of the complex of heternuclear (EuLaL2L'(ClO4)4.6H2O) are more than eight times that of the crown ether europium complex. It was shown that the linked ligand (p-phthalic acid) can transfer the absorbed energy of Lanthanum-crown ether to europium-crown ether with high efficiency.

[Preparation and properties of complex of europium lanthanum with crown ether and p-phthalic acid] Publishing Authors By Initials

YL Zhao,FY Zhao,ZX Hao,

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[Preparation and properties of complex of europium lanthanum with crown ether and p-phthalic acid] Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Guang pu xue yu guang pu fen xi = Guang pu

VOLUME: 24

Page Numbers: 305-7

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ISSN: 1000-0593

DAY: 11

MONTH: Mar

YEAR: 2004

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LANGUAGE: chi

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AFFILIATION: College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, China.

Country: China

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MEDLINETA: Guang Pu Xue Yu Guang Pu Fen X

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