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1、PhotoluminescencepropertiesofLaF3:Eunanoparticlespreparedbyrefluxingmethod光致发光性质：箱掺杂的三氟化鋼纳米粒子的回流制备方法Rareearthions-dopednanostructurematerialshavebeenwidelyinvestigatedbecauseoftheirsharpandintenseemissionoriginatingfromtheelectronictransitionswithinthe4fshellofthedopin
2、gionsandtheirapplicationsinmanyfields.Incomparisonwiththeconventionaloxide-basedluminescentmaterials,fluoridesareadvantageousasfluorescenthostmaterialsowingtotheirlowvibrationalenergiesandthesubsequentminimizationofthequenchingoftheexcitedstateoftherare-earthions⑴.Henc
3、e,rareearthions-dopednanostructuralfluorideshaveattractedextensiveinterestsduetotheirpotentialapplicationsinlightinganddisplays12,31,upconverters
4、ymagneticresonanceimaging(MRI)〔9],biologicalfluorescentlabels11014],opticalamplifiers115],transparentglass1161,scintillator
5、s117',photoniccrystals11etc.Amongthesefluorides,LaF3hostmatrixexhibitsthephotochemicalstability,thebiocompatibility,andtherelativelowcrystallinetemperature,anditsphononenergyisaslowas350cm-1119,20]・Rareearthions(Eu3+,Ce?+,Tbs+,Nd3+,Er3+,Pr3+,Ho3+,Yb3+,Tm3+)dopedLaF3nan
6、oparticles[21_24],LaF3triangularnanoplates
7、24,25],andsilica-coated119]?ororganicligands120,26
8、modifiedLaF3luminescentnanoparticleshavebeenreportedinliteratures.稀土离子掺杂的纳米结构材料己被广泛研究，因为其尖锐和激烈的排放来源于电子跃迁的4f内壳的掺杂离子和其在许多领域的应用。在与传统的氧化物系发光材料相比，氟化物是有利的，因为由于其低的振动能级和随后的最小化的稀土离子的激发
9、态猝灭，并且是荧光基质材料。因此，稀土离子掺杂的纳米结构氟化物己经吸引了广泛的兴趣，由于其潜在的应用在照明和显示，丄变频器，磁共振成像(MRI),生物荧光标记，光放大器，透明玻璃，闪烁晶体，光子晶体等。在这些氟化物屮，三氟化镰I基质具有光化学稳定性，生物相容性，和相对较低的结晶温度,它的声子能量低至350曲处。地球离子稀土(你肺，轼，钱，餌,错，铁，篋，铉)掺杂三氟化錮纳米粒子，三氟化錮三角形纳米片，和硅涂层，或有机配体修饰三氟化錮发光纳米粒子己经被报道文献II»ORareearthions-dopedLaF3atnanoscale
10、canbesynthesizedbyusingcoprecipitationtechnique111,15],single-sourceprecursor(SSP)strategy124',polyolmethod122]?andhydrothermalmethod1271・Veggelandcoworkershavesystematicallyinvestigatedthesynthesis,surfacemodification,andluminescentpropertiesofrareearthions-dopedLaF3n
11、anoparticles
12、l8~21].Usinglanthanidesaltsandsodiumfluorideorammoniumfluorideasstartingmaterials,theysynthesizedthedope
