Люминофоры на основе оксидов, оксисульфидов, фосфатов, ниобатов, танталатов и боратов редкоземельных и редких элементов синтезированы низкотемпературным экстракционно-пиролитическим методом. Рассмотрены спектры возбуждения люминесценции и спектры люминесценции люминофоров. Оценено влияние допирующих добавок на спектрально-люминесцентные свойства – характер спектров и интегральную интенсивность люминесценции ионов европия в соединениях.

Исследовано комплексообразование европия и тербия с полифункциональными органическими соединениями – β-дикетонами, органическими кислотами. Состав комплексов изучен экстракционным методом, ИК и люминесцентной спектроскопией. Установлено, что при экстракции РЗЭ смешанными экстрагентами идет эффективное комплексообразование РЗЭ в органической фазе. Показана возможность синтеза из насыщенных экстрактов разнолигандных координационных соединений РЗЭ, выделены индивидуальные кристаллические комплексы. The complex formation of europium and terbium with polyfunctional organic compounds: β-diketones, organic acids were investigated. The composition of the complexes was studied by extractive method, infrared and luminescent spectroscopy. It was established that during the extraction of REE by mixed extractants there is an effective complex formation of REE in the organic phase. The possibility of synthesis of different ligand coordination compounds of REE from saturated extracts was shown and individual crystalline complexes were isolated.

Complex formation of REEs with polydentate organic ligands. M.V. BELOBELETSKAYA, N.I. STEBLEVSKAYA, M.A. MEDKOV (Institute of Chemistry, FEB RAS, Vladivostok). The complex formation of europium and terbium with polyfunctional organic compounds: β-diketones, organic acids were investigated. The composition of the complexes was studied by extractive method, infrared and luminescent spectroscopy.It was established that during the extraction of REE by mixed extractants there is an effective complex formation of REE in the organic phase. The possibility of synthesis of different ligand coordination compounds of REE from saturated extracts was shown and individual crystalline complexes were isolated.

The paper considers possibilities and advantages of the extraction-pyrolytic method for obtaining functional materials: luminophores, magnetic, catalytically effective and biomedical materials, including nanodispersed ones, due to decrease of the temperature of the process and its duration. Possibility to add various amounts of doping elements to the composition material that can modify its physico-chemical properties is another advantage of the extraction-pyrolytic method. The undoubted advantage of the method for preparation of multi-layer functional coatings consists in possibility to combine it with other ones, e.g. the plazma-electrolytic method, which makes it possible directionally form thin inorganic layers of the necessary chemical composition and practical purpose on substrates of various nature and forms.

Показана перспективность метода получения сложнооксидных нанокомпозитов марганца и тербия, марганца, тербия и серебра в виде объемных порошков при низкотемпературном пиролизе органических экстрактов на базе экстракционных систем с различными полифункциональными лигандами. Изучены магнитные свойства наноразмерных манганитов тербия различного состава, в том числе допированных ионами серебра.

Nano-size luminophors of red and green luminescence based on rare-earth oxides, oxysulphides, and phosphates were obtained by low-temperature pyrolysis of the mixed extracts. Luminescent properties of nanocomposites were analyzed by means of excitation and luminescence spectra.