Zhao Yan-Xia, Xu Bo, Ding Xun-Lei, He Sheng-Gui
Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun, Haidian, Beijing 100190, PR China.
J Nanosci Nanotechnol. 2013 Feb;13(2):819-23. doi: 10.1166/jnn.2013.5949.
Lanthanide-containing organic-inorganic hybrid materials have drawn much attention in the research of materials with multifunctional and modulated optical properties. Here, large area pyrene-Eu hybrid nanostructures constructed of a large amount of nanowires are successfully fabricated through physical vapor codeposition method at low temperature (77 K). Further optical property characterizations indicate that the pyrene-Eu hybrid nanostructures exhibit enhanced green light emission under blue light excitation compared with other fabricated samples (pyrene nanostructures, Eu nanoparticles, and pyrene/Cu hybrid nanostructures). The results indicate the occurrence of an energy transfer process from the sensitizing pyrene nanostructures to Eu. Pyrene-Eu hybrid nanostructures with unique photoluminescence properties may have promising applications in phosphors, light-emitting device, and UV-vis photo sensor. The results also prove that the physical vapor codeposition method is an effective way for design of organic-inorganic hybrid materials with controllable and tunable optical properties.
含镧系元素的有机-无机杂化材料在具有多功能和可调光学性质的材料研究中备受关注。在此，通过低温（77 K）物理气相共沉积法成功制备了由大量纳米线构成的大面积芘-铕杂化纳米结构。进一步的光学性质表征表明，与其他制备的样品（芘纳米结构、铕纳米颗粒和芘/铜杂化纳米结构）相比，芘-铕杂化纳米结构在蓝光激发下呈现出增强的绿光发射。结果表明发生了从敏化芘纳米结构到铕的能量转移过程。具有独特光致发光性质的芘-铕杂化纳米结构在磷光体、发光器件和紫外-可见光电传感器方面可能具有广阔的应用前景。结果还证明，物理气相共沉积法是设计具有可控和可调光学性质的有机-无机杂化材料的有效方法。
