【作者】 张莉； 谢安建； 李士阔； 马东； 沈玉华；

【Author】 ZHANG Li, XIE An-jian , LI Shi-kuo, MA Dong, SHEN Yu-hua School of Chemistry and Chemical Engineering, Anhui University, Hefei 23003, China Department of Chemistry-Biology, Suzhou College, SuZhou 234000, China

【机构】 安徽大学化学化工学院；

【摘要】 文章利用维生素E(VE)Langmuir单分子膜一步还原氯金酸根离子(AuCl4-)制备了含Au粒子的复合薄膜,通过TEM,FTIR和UV-Vis等测试手段对薄膜的微结构进行了表征。结果表明,随着反应的进行, 还原制备的金粒子的尺寸由小变大,形貌也出现了一系列的变化,由球形向三角形和孪晶状形态转变;VE 分子的酚基团被氧化成了醌式结构,Au粒子的表面共振吸收的强度随反应时间的增加而线性增加,表明 Au粒子复合单分子膜可以成功的被转移到基片上形成超薄膜。更多还原

【Abstract】 Gold composite thin films were generated by one-step reduction of chloroaurate (AuCl4- ) ions beneath vitamin E (VE) Langmuir monolayer, and the transfer ratio of monolayer containing silver nanoparticles was close to unity. The products were then characterized by transmission electron microscopy (TEM), ultraviolet-visible spectroscopy (UV-Vis), and reflection absorption-Fourier transform infrared spectroscopy (RA-FTIR), respectively. The results showed that the morphology changes of the Au particles such as spherical-like and multiply-twinned particles (MTPs) could be seen with reaction time. The plasmon absorption intensities of gold composite LB films increased with the film thickness. The phenolic groups in the VE molecules are responsible for the reduction of silver ions on alkaline subphase.更多还原