Photoluminescence,structural and antibacterial properties of co-dopedβ-Ca_(3)(PO_(4))_(2)-type phosphates Ca_(8)CuRE(PO_(4))_(7)(RE=Eu-Er)  

作　　者：Ivan V.Nikiforov Ekaterina V.Iliin Bogdan I.Lazoryak Sergey M.Aksenov Pavel V.Slukin Dina V.Deyneko 

机构地区：[1]Department of Chemistry,Lomonosov Moscow State University,119991,Moscow,Russia [2]Laboratory of Arctic Mineralogy and Material Sciences,Kola Science Centre,Russian Academy of Sciences,184209,Apatity,Russia [3]Geological Institute,Kola Science Centre,Russian Academy of Sciences,184209,Apatity,Russia [4]State Scientific Center of Applied Microbiology and Biotechnology of Rospotrebnadzor 24,Block A,142279,Obolensk,Russia

出　　处：《Journal of Rare Earths》2024年第9期1658-1668,I0002,共12页稀土学报（英文版）

基　　金：Project supported by Russian Science Foundation(19-77-10013-Ⅱ)。

摘　　要：Novel Ca_(8)CuRE(PO_(4))_(7)where RE^(3+)=Eu^(3+),Tb^(3+),Dy^(3+),Ho^(3+)and Er^(3+)were synthesized by a solid-state method in air.The structures of the samples were characterized by powder X-ray diffraction using Rietveld refinement to determine the occupation of crystal sites.The samples are found to have a centrosymmetric structure with space group R3c,as shown by dielectric measurements.These synthesized Ca_(8)CuRE(PO_(4))_(7)samples have multifunctional properties.The Cu^(2+)ions provide antibacterial properties,while the rare earth elements ions exhibit luminescence properties,and theβ-Ca_3(PO_(4))_(2)-type host is biocompatible.The photoluminescence properties of RE^(3+)ions were studied and compared with other simmilar Ca_(8)MRE(PO_(4))_(7)phosphates,where M is a divalent metal.The photoluminescence intensity quenching in terms of energy transfer from RE^(3+)to Cu^(2+)is disscused.The bioactive properties were studied in relation to antibacterial activity against E.coli and S.aureus.All syntesized Ca_(8)CuRE(PO_(4))_(7)samples demonstrate very high and stable inhibition of bacteria growth.The correlation between crystal structure and properties is discussed.By combining multiple approaches to the directio nal design of such materials,several important properties within a single chemical compound to achieve biovisualization and bioactive properties simultaneously can be combined.

关 键 词：β-Ca_(3)(PO_(4))_(2) Whitlockite-type structure Bioactive phosphates TCP PHOTOLUMINESCENCE Rare earths 

分 类 号：TB321[一般工业技术—材料科学与工程]