作为可光切换对齐介质的多酸盐的光控制液态晶度
Max Hirschmann1, Olaf Soltwedel2, Philipp Ritzert2
1Clemens-Schöpf-Institute, Technical University of Darmstadt (TUDa), Alarich-Weiss-Straße 4, DE 64287 Darmstadt, Germany.
Journal of the American Chemical Society
|February 7, 2023
概括
合成的光响应型聚酸盐与正方体化使光诱导的线圈螺旋转换成为可能. 这些聚合物形成液晶,并可以分化酶体,在材料科学中提供新的可能性.
科学领域:
- 聚合物化学
- 材料科学
- 超分子化学
背景情况:
- 光敏聚合物提供了对材料属性的动态控制.
- 由于其可逆的E/Z异构化,亚衍生物被广泛用于光开关.
- 聚酸为设计功能性聚合物提供了多功能支架.
研究的目的:
- 合成和描述带有光响应组的新型多酸盐.
- 研究这些聚合物的光诱导的形状变化 (线圈-螺旋过渡).
- 探索自组装行为,包括液晶形成,以及在分化中的潜在应用.
主要方法:
- 聚亚斯巴酸盐与悬挂式化亚博基 (PpFABLA) 和共聚合物 (PpFABLA-co-PBLA) 的合成
- 使用光谱学和粘度学研究可见光诱导的E/Z异构和随后的线圈-螺旋过渡.
- 液晶相 (液晶晶体) 的特征及其在磁场下的方向.
- 评估聚合物作为对齐介质用于测量二极合物和分化体.
主要成果:
- PpFABLA经历可见光诱导的可逆线圈-螺旋过渡 (绿光:线圈,紫光:螺旋).
- 整体化亚博基组增强了螺旋式Z-同位素的热稳定性.
- 螺旋式PpFABLA在20%的度下形成一个磁导向液晶.
- 配聚物PpFABLA-co-PBLA保持了螺旋结构,无论光异构化如何,在16%的度下形成LLC.
- PpFABLA作为对准介质用于测量二极合和区分反体.
结论:
- 成功合成了具有增强螺旋状态热稳定的新型光响应聚酸盐.
- 光引起的形状变化导致具有可调节性质的液晶相的形成.
- 这些聚合物显示出作为先进的对齐介质来确定分子结构和性识别的巨大潜力.
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