Synthesis, Microwave-Assisted Polymerization, and Polymer Properties of Fluorinated 2-Phenyl-2-oxazolines: A Systematic Study
作者:Matthias Lobert、Hanneke M. L. Thijs、Tina Erdmenger、Rebecca Eckardt、Christoph Ulbricht、Richard Hoogenboom、Ulrich S. Schubert
DOI:10.1002/chem.200800671
日期:2008.11.17
present a detailed systematic study of the synthesis and ability of fluorinated 2-phenyl-2-oxazolines to undergo polymerization. The synthesis of these compounds is based on a two-step procedure that gives the desired 2-oxazolines in moderate-to-good yields. All the compounds were fully characterized by IR and NMR ((1)H, (13)C, and (19)F) spectroscopy, mass spectrometry, and elemental analysis. The
我们目前对氟化2-苯基-2-恶唑啉的合成及其进行聚合的能力进行详细的系统研究。这些化合物的合成是基于两步法进行的,该过程以中等至良好的产率提供了所需的2-恶唑啉。所有化合物均通过IR和NMR((1)H,(13)C和(19)F)光谱,质谱和元素分析充分表征。随后将2-恶唑啉用作活性阳离子开环聚合(CROP)的单体,微波辐射为热源(T = 140摄氏度),硝基甲烷为溶剂,甲苯磺酸甲酯为引发剂。聚合反应的线性一阶动力学图伴随分子量随转化率和低多分散指数(PDI)值(通常低于1)线性增加。30)表示活性聚合机理。所得的聚合速率通常反映出对氟取代基的量特别是苯环的邻氟取代基的存在或不存在的强烈敏感性。分离所有聚合物并通过尺寸排阻色谱法和MALDI-TOF质谱法表征。最后,通过使用差示扫描量热法,热重分析和接触角测量对选定的聚合物性能进行了详细研究,从而得出了结构-性质关系。尽管聚合物的热性质主要受邻