Molecular Design and Synthesis of Fluorinated Polyethers toward Organic Materials with High Dielectric Constants and Ferroelectricity
作者:Takashi Okano、Makiko Hiraishi、Tomonori Mizutani
DOI:10.1246/bcsj.80.752
日期:2007.4.15
Molecular design and synthesis of organic ferroelectric materials with a -OCH2CF2CH2O- moiety as the basic molecular structure were conducted in order to improve the high coercive field value of poly(vinylidene fluoride) (PVDF). The synthesis of the designed molecules were based on the half ester 2,2-difluoro-l,3-propanediol N,N-diethylcarbamamic acid. The sequence of alkylation of alcohol, deprotection
为了提高聚偏二氟乙烯(PVDF)的高矫顽场值,进行了以-OCH2CF2CH2O-部分为基本分子结构的有机铁电材料的分子设计和合成。设计分子的合成基于半酯 2,2-二氟-1,3-丙二醇 N,N-二乙基氨基甲酸。醇的烷基化、脱保护和第二次烷基化的顺序有效地产生了所需的聚醚,但威廉姆森醚合成的情况除外,该合成发生在氟化醇和氟化甲苯磺酸酯之间。制备的聚醚在室温下的介电常数相对较高,但未观察到铁电性能。另一种方法在分子末端具有用于分子间相互作用的官能团。