Preparation of Y2O3:Eu3+ nanoparticles in reverse micellar systems and their photoluminescence properties.
Preparation of Y2O3:Eu3+ nanoparticles in reverse micellar systems and their photoluminescence properties.
复制标题
反胶束体系中Y2O3:Eu3纳米颗粒的制备及其光致发光性能。
DOI：
10.1016/j.jcis.2004.03.070
复制
发表时间：
2004
影响因子：
9.9
通讯作者：
I. Komasawa
中科院分区：
文献类型：
--
作者：
T. Hirai;Y. Asada;I. Komasawa
通过在双（2-乙基己基）磺基琥珀酸钠（AOT）/异辛烷或聚乙二醇单4-壬基苯基醚中制备复合氢氧化钇-Eu纳米粒子，通过煅烧获得了具有球形形态和窄尺寸分布的Y2O3:Eu3+荧光粉纳米粒子（尺寸为4-8 nm）。 (NP-5)/环己烷反胶束体系。这是通过在反胶束溶液中原位聚合六亚甲基二异氰酸酯（HDI）并将所得 PUA 材料进行煅烧，将 Y-Eu 氢氧化物纳米粒子掺入聚脲（PUA）中来实现的。在 AOT/异辛烷体系中制备的 Y2O3:Eu3+ 纳米颗粒的发射强度明显低于在均匀水溶液中制备的微米尺寸颗粒的发射强度，因为煅烧的纳米颗粒含有源自剩余 AOT 表面活性剂的 Na2SO4 杂质。相比之下，在 NP-5/环己烷体系中制备的纳米粒子比在 AOT/异辛烷体系中制备的纳米粒子表现出更高的发射强度，并且与在均匀水溶液中制备的微米尺寸粒子相比表现出更长的发光寿命。发现通过所提出的方法制备的 Y2O3:Eu3+ 的光致发光强度随着粒径的减小而降低。
Y2O3:Eu3+phosphor nanoparticles (4–8 nm in size) with spherical morphology and narrow size distribution were obtained by calcination of composite Y–Eu hydroxide nanoparticles, which were prepared in sodium bis(2-ethylhexyl)sulfosuccinate (AOT)/isooctane or polyethylene glycol mono-4-nonylphenyl ether (NP-5)/cyclohexane reverse micellar systems. This was achieved by the incorporation of the Y–Eu hydroxide nanoparticles into polyurea (PUA) via in situ polymerization of hexamethylene diisocyanate (HDI) in the reverse micellar solution and subsequent calcination of the resulting PUA materials. The emission intensity of the Y2O3:Eu3+nanoparticles, prepared in the AOT/isooctane system, was significantly lower than that of the micrometer-size particles prepared in a homogeneous aqueous solution, since the calcined nanoparticles contained Na2SO4impurity derived from the remaining AOT surfactant. The nanoparticles prepared in the NP-5/cyclohexane system, in contrast, showed higher emission intensity compared to the nanoparticles prepared in the AOT/isooctane system and longer luminescence lifetime compared to the micrometer-size particles prepared in the homogeneous aqueous solution. The photoluminescence intensity of Y2O3:Eu3+, prepared via the proposed process was found to decrease with decreasing the particle size.