Abstract Non-conjugated multi-functionalized all-optical photorefractive (PR) polymers were designed and synthesized via ring-opening metathesis polymerization (ROMP) of two monomers using Grubbs II catalyst as an initiator. The polymers were characterized by infrared (IR) spectrum, gel permeation chromatography (GPC), UV-visible spectrum (UV-Vis), differential scanning calorimetry (DSC), thermogravimetry (TG) and so on. The number-average molar mass (M n) of the polymers is no less than 8.5 × 104 while their glass transition temperatures of 52°C and 45°C are close to the room temperature, which is helpful to the enhancement of PR orientation and the fabrication of PR devices. The polymers have good thermal stability and great solubility in tetrahydrofuran (THF). Without any plasticizer, the transparent optical films can be prepared by solution-casting with THF solution of polymers. Their PR properties at 633 nm were evaluated by two beam coupling (TBC) experiments under zero electric field without prepoling. It is shown that the single-component polymer has obvious all-optical PR behavior.

中文翻译：

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通过开环复分解聚合的全光学非共轭多功能化光折变聚合物

摘要 以 Grubbs II 催化剂为引发剂，通过两种单体的开环复分解聚合 (ROMP) 设计并合成了非共轭多功能化全光学光折变 (PR) 聚合物。通过红外(IR)光谱、凝胶渗透色谱(GPC)、紫外-可见光谱(UV-Vis)、差示扫描量热法(DSC)、热重法(TG)等对聚合物进行表征。聚合物的数均摩尔质量（Mn）不小于 8.5 × 104，而其 52°C 和 45°C 的玻璃化转变温度接近室温，有助于增强 PR 取向和PR设备的制造。该聚合物具有良好的热稳定性和在四氢呋喃 (THF) 中的良好溶解度。不含任何增塑剂，透明光学薄膜可以通过聚合物的四氢呋喃溶液浇铸制备。它们在 633 nm 处的 PR 特性通过在零电场下没有预极化的两个光束耦合 (TBC) 实验进行评估。结果表明，单组分聚合物具有明显的全光PR行为。