通过原位聚合制备和表征上转换发光 NaYF4:Yb, Er (Tm)/PS 块体透明纳米复合材料。
Preparation and characterization of upconversion luminescent NaYF4:Yb, Er (Tm)/PS bulk transparent nanocomposites through in situ polymerization.
机构信息
State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China.
出版信息
J Colloid Interface Sci. 2010 May 15;345(2):262-8. doi: 10.1016/j.jcis.2010.01.082. Epub 2010 Feb 1.
The in situ polymerization method was applied to synthesize bulk nanocomposites consisting of hydrophobic NaYF(4):Yb, Er (Tm) nanoparticles as the filler and polystyrene (PS) as the host material. The oleic acid stabilized NaYF(4):Yb, Er (Tm) nanoparticles and NaYF(4):Yb, Er (Tm)/PS nanocomposites have been well characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM), the thermogravimetric analysis (TGA), upconversion photoluminescence spectra and luminescence decays. The well-crystallized NaYF(4):Yb, Er (Tm) nanoparticles are spherical with a mean diameter of 40 nm. NaYF(4):Yb, Er/PS and NaYF(4):Yb, Tm/PS nanocomposites exhibit strong green and blue upconversion photoluminescence upon 980 nm laser excitation, due to the integration of luminescent NaYF(4):Yb, Er and NaYF(4):Yb, Tm nanoparticles, respectively. These nanocomposites can be potentially used as 3D display materials.
采用原位聚合法合成了由疏水性 NaYF(4):Yb, Er(Tm)纳米粒子作为填充剂和聚苯乙烯(PS)作为主体材料组成的块状纳米复合材料。油酸稳定的 NaYF(4):Yb, Er(Tm)纳米粒子和 NaYF(4):Yb, Er(Tm)/PS 纳米复合材料已经通过 X 射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、热重分析(TGA)、上转换光致发光光谱和荧光衰减进行了很好的表征。结晶良好的 NaYF(4):Yb, Er(Tm)纳米粒子呈球形，平均直径为 40nm。NaYF(4):Yb, Er/PS 和 NaYF(4):Yb, Tm/PS 纳米复合材料在 980nm 激光激发下表现出强的绿光和蓝光上转换光致发光，这是由于分别集成了发光的 NaYF(4):Yb, Er 和 NaYF(4):Yb, Tm 纳米粒子。这些纳米复合材料可作为 3D 显示材料使用。
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