【作者】 杨建军； 周京利； 王克逸； 张其锦；

【机构】 中国科学技术大学精密机械与精密仪器系；

【摘要】 本文在偶氮高分子聚合物中添加不同间距分布的Ag纳米粒子,采用波长为442nm的He—Cd激光泵浦,激发薄膜样品中Ag纳米粒子的等离子体共振效应,极大地增强了粒子周围纳米尺度范围内的散射电磁场强度,在一定程度上提高了偶氮聚合物光致异构的效率;另外,通过改变偶氮聚合物的取代基,研究了取代基与纳米Ag粒子的相互作用对光致异构的影响。本文报道了通过宏观测量试验观察到的偶氮聚合物光致异构,及其引起的光学各向异性变化,讨论了一种影响顺反异构的有效途径。更多还原

【Abstract】 Silver nanoparticles with different spacing distance have been doped into the azo polymer, and the He-Cd laser whose wavelength is 442nm has been used to excitated the plasmon resonance effect of the silver nanoparticles. This experiment has enhanced the energy of electromagnetic wave around the nanoparticles, and advance the efficiency of photo-induces isomerization. In addition, we changed the mesogenic side groups of azo polymer and investigated the photo-induces isomerization under the influence the connection between mesogenic side groups and silver nanoparticles.更多还原