Hu Xiaobing, Yu Demei
School of Science, Xi'an JiaoTong University, Xi'an 710049, China.
J Nanosci Nanotechnol. 2012 Mar;12(3):2448-55. doi: 10.1166/jnn.2012.5804.
Silver (Ag) nanoparticles were successfully synthesized in hyperbranched polybenzobisthiazoles (HBPBZTs) matrices using a reductive technique. The synthesized Ag nanoparticles were characterized through different spectroscopic and analytical techniques, such as FTIR, XRD, TGA, TEM, UV-vis, and fluorescence spectra. The results showed that the synthesized Ag-HBPBZT nanocomposites exhibited excellent thermostability and the Ag nanoparticles represented face-centered cubic crystal structures. It was interesting that these nanoparticles were soluble in DMSO. The Ag nanoparticles prepared using amino and sulfydryl-terminated HBPBZT (hbp3) as template and stabilizer had smaller sizes, more regular shapes, and narrower size distributions than those prepared using hbpl and hbp2 as templates and stabilizers. The Ag-HBPBZT nanocomposites had UV-vis absorptions at approximately 341 nm to 361 nm which were attributable to the surface plasmon resonance of the Ag nanoparticles. These nanocomposites emitted a strong blue light in DMSO solution. The prepared Ag-HBPBZT nanocomposites are potentially useful in the area of blue light emission.
采用还原技术在超支化聚苯并双噻唑（HBPBZTs）基质中成功合成了银（Ag）纳米颗粒。通过不同的光谱和分析技术对合成的Ag纳米颗粒进行了表征，如傅里叶变换红外光谱（FTIR）、X射线衍射（XRD）、热重分析（TGA）、透射电子显微镜（TEM）、紫外可见光谱（UV-vis）和荧光光谱。结果表明，合成的Ag-HBPBZT纳米复合材料表现出优异的热稳定性，且Ag纳米颗粒呈现面心立方晶体结构。有趣的是，这些纳米颗粒可溶于二甲基亚砜（DMSO）。以氨基和巯基封端的HBPBZT（hbp3）为模板和稳定剂制备的Ag纳米颗粒比以hbpl和hbp2为模板和稳定剂制备的Ag纳米颗粒尺寸更小、形状更规则且尺寸分布更窄。Ag-HBPBZT纳米复合材料在约341nm至361nm处有紫外可见吸收，这归因于Ag纳米颗粒的表面等离子体共振。这些纳米复合材料在DMSO溶液中发出强烈的蓝光。所制备的Ag-HBPBZT纳米复合材料在蓝光发射领域具有潜在应用价值。
