Guo Jinxin, Fujii Ryuta, Ono Takanori, Klepp Jürgen, Pruner Christian, Fally Martin, Tomita Yasuo
Opt Lett. 2014 Dec 1;39(23):6743-6. doi: 10.1364/OL.39.006743.
We report influences of varying functionalities of thiols as chain transfer agents on the spatial frequency response, polymerization shrinkage, and thermal stability of a volume grating recorded in a photopolymerizable ZrO₂ nanoparticle-polymer composite film. It is shown that a substantial increase in the saturated refractive index modulation is realized at high spatial frequencies by doping with multifunctional thiols. Moreover, the incorporation of multifunctional thiols considerably suppresses polymerization shrinkage of recorded volume gratings and thermal changes in refractive index and film thickness as compared with the case of mono-thiol. These results indicate that multifunctional thiols provide effective control of the properties of nanoparticle-polymer composite volume gratings for various applications in light and neutron optics.
我们报告了作为链转移剂的硫醇不同官能团对记录在可光聚合的ZrO₂纳米颗粒-聚合物复合膜中的体光栅的空间频率响应、聚合收缩和热稳定性的影响。结果表明，通过掺杂多功能硫醇，在高空间频率下实现了饱和折射率调制的显著增加。此外，与单硫醇的情况相比，多功能硫醇的加入显著抑制了记录体光栅的聚合收缩以及折射率和膜厚度的热变化。这些结果表明，多功能硫醇可为光和中子光学中的各种应用有效控制纳米颗粒-聚合物复合体光栅的性能。
