Spectroscopic and magnetic studies of mixed lanthanide complexes:: LnL3α,α′Dipy in solution and in solid

被引：48
作者：
Borzechowska, M
Trush, V
Turowska-Tyrk, I
Amirkhanov, W
Legendziewicz, J
机构：
[1] Univ Wroclaw, Fac Chem, PL-50383 Wroclaw, Poland
[2] Kiev TG Shevchenko State Univ, Dept Chem, UA-2520033 Kiev, Ukraine
[3] Wroclaw Univ Technol, Dept Chem, PL-50370 Wroclaw, Poland
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2002年 / 341卷 / 1-2期
关键词：
LnL(3)bip(1/2bip); X-ray data; radiative and nonradiative processes; energy-transfer; luminescence; excitation spectra; magnetism;
D O I：
10.1016/S0925-8388(02)00075-0
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
New monomeric complexes LnL(3)bip(1/2bip) were synthesized (Ln=Eu3+, Tb3+); L-phosphoro-azo derivative of beta-diketone: CCl3C(O)NP(O)(OCH3)(2) and bip-alpha,alpha'dipyridyl and single crystals were grown. X-Ray diffraction studies were done. The complexes crystallize in the triclinic system, space group P (1) over bar. Magnetic susceptibility and magnetization of the crystals were investigated. High resolution absorption, luminescence and excitation spectra were measured for crystals at 293, 77 and 4 K in order to characterize their physical properties. Radiative and nonradiative processes were analyzed. The role of the ligand singlet and triplet states in energy-transfer as well as the charge-transfer states in emission quenching were studied. (C) 2002 Elsevier Science B.V. All rights reserved.
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页码：98 / 106
页数：9
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