通过液晶辅助种子分散聚合制备聚合物环面及其演变
generation and evolution of polymer toroids by liquid crystallization-assisted seeded dispersion polymerization.
作者信息
Zheng Mingxin, Ye Qiquan, Chen Xi, Zeng Min, Song Guangjie, Zhang Jun, Yuan Jinying
机构信息
Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China.
School of Materials Science and Engineering, Chang'an University, Xi'an 710061, P. R. China.
出版信息
Chem Commun (Camb). 2022 Jun 16;58(49):6922-6925. doi: 10.1039/d1cc06709e.
An effective method is presented for preparing high solid content azobenzene-containing triblock copolymer toroidal assemblies by liquid crystallization-assisted seeded dispersion polymerization. Vesicles are prepared polymerization-induced self-assembly (PISA), and used as seeds for further chain extension. By introducing smectic liquid crystalline (LC) ordering into the core-forming block, toroids are formed during the polymerization. The morphological transformation from toroids to barrels is observed under ultraviolet irradiation due to the photo-isomerization of the azobenzene mesogens. This strategy expands the scope of tunable anisotropic morphologies for potential functional nanomaterials based on a LC copolymer by seeded dispersion polymerization.
提出了一种通过液晶辅助种子分散聚合制备高固含量含偶氮苯三嵌段共聚物环形组装体的有效方法。通过聚合诱导自组装（PISA）制备囊泡，并将其用作进一步链延伸的种子。通过将近晶型液晶（LC）有序引入成核嵌段，在聚合过程中形成环形。由于偶氮苯介晶的光异构化，在紫外光照射下观察到从环形到桶形的形态转变。该策略通过种子分散聚合扩展了基于LC共聚物的潜在功能纳米材料的可调谐各向异性形态的范围。
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