Knyazev Andrey A, Karyakin Maksim E, Krupin Aleksandr S, Romanova Ksenia A, Galyametdinov Yuriy G
Physical and Colloid Chemistry Department, Kazan National Research Technological University , 420015 Kazan, Russia.
Kazan E. K. Zavoisky Physical-Technical Institute, Russian Academy of Sciences , 420029 Kazan, Russia.
Inorg Chem. 2017 Jun 5;56(11):6067-6075. doi: 10.1021/acs.inorgchem.6b02825. Epub 2017 May 8.
Europium(III) complexes that are the anisometric analogues of a well-known Eu(DBM)Phen (DBM = dibenzoylmethane; Phen = 1,10-phenanthroline) complex were synthesized. Quantum-chemical calculations of the excited states of new Eu(III) complexes and some conjugated polymers showed that poly(N-vinylcarbazole) provides the most efficient energy transfer in polymer films doped with synthesized Eu(III) complexes. These new composite films were prepared, and their luminescence properties were studied. The results of experimental data confirmed theoretical prediction about significant influence introduced in molecular structure long terminal alkyl chains and cyclohexane on the luminescence efficiency of "Ln(III)-polymer" composite. As the result a substantial contribution of complex anisometry to the luminescence efficiency of composite was revealed due to the increase of the complex limit concentration before self-quenching more than twofold.
合成了铕（III）配合物，它们是著名的Eu（DBM）Phen（DBM = 二苯甲酰甲烷；Phen = 1,10 - 菲咯啉）配合物的不等轴类似物。对新型铕（III）配合物和一些共轭聚合物的激发态进行的量子化学计算表明，聚（N - 乙烯基咔唑）在掺杂有合成铕（III）配合物的聚合物薄膜中提供了最有效的能量转移。制备了这些新型复合薄膜，并研究了它们的发光性质。实验数据结果证实了关于长末端烷基链和环己烷的分子结构对“Ln（III） - 聚合物”复合材料发光效率产生重大影响的理论预测。结果表明，由于自猝灭前配合物极限浓度增加了两倍多，配合物的不等轴性对复合材料的发光效率有很大贡献。
