Инд. авторы:	Bekker T.B., Solntsev V.P., Yelisseyev A., Davydov A., Rashchenko S.V.
Заглавие:	Crystal Chemical Design of Functional Fluoride Borates with "Antizeolite" Structure
Библ. ссылка:	Bekker T.B., Solntsev V.P., Yelisseyev A., Davydov A., Rashchenko S.V. Crystal Chemical Design of Functional Fluoride Borates with "Antizeolite" Structure // Crystal Growth & Design. - 2020. - Vol.20. - Iss. 6. - P.4100-4107. - ISSN 1528-7483. - EISSN 1528-7505.
Идентиф-ры:	DOI: 10.1021/acs.cgd.0c00368; РИНЦ: 43294486; WoS: 000538515500059;
Реферат:	eng: "Antizeolite" borates are built with the positively charged porous [Ba-12(BO3)(6)](6+) framework, hosting various guest anion groups. Resembling zeolitic structures, the porous borates ease with the control of structure-related properties by exchanging the type and amounts of those guest anion groups. Crystals of copper-doped "antizeolite" fluoride borate Ba-12(BO3)(6)[BO3][LiF4]:Cu were grown from high-temperature solution. Using X-ray single-crystal diffraction, the structure was solved and refined in the centrosymmetric P4(2)/mbc space group in contrast to non-centrosymmetric undoped Ba-12(BO3)(6)[BO3][LiF4] crystals (P4(2)bc space group). Optical and electron spin resonance spectroscopic investigations concluded the presence of copper ions in both Cu+ and Cu2+ states, which makes the Ba-12(BO3)(6)[BO3][LiF4]:Cu crystal a potential matrix for tissue equivalent dosimeters. Intensive luminescence band at 412 nm associated with the Cu+ centers was observed under 325 nm excitation. The activation of crystals creates centers of radiative recombination which enhance the thermally stimulated luminescence intensity.
Ключевые слова:	GROWTH; SYSTEM; SPECTRA; SYMMETRY; CU+; OPTICAL-PROPERTIES;
Издано:	2020
Физ. хар-ка:	с.4100-4107