with trifluoroacetic acid to afford 3c. All the polymer membranes, especially those having twisted biphenyl groups, exhibited high gas permeability; for example, their oxygen permeability (PO2) values ranged from 130 to 1400 barrers. Membrane 2d having two chlorine atoms in the biphenyl group showed the highest gas permeability (PO2 = 1400 barrers) among the present polymers. © 2010 Wiley Periodicals
含取代的
联苯Diarylacetylene单体(1A - ˚F)和
蒽基(1克)基团进行合成,然后用TACL聚合5 - ñ -Bu 4 Sn的催化剂,以产生相应的聚(diarylacetylene)S(图2a -克)。聚合物2a – f可溶于常见的有机溶剂,例如
环己烷,
甲苯和
氯仿。根据热重分析,聚合物在空气中失重的起始温度超过400℃,表明相当高的热稳定性。独立式膜2a和2c – e通过溶液浇铸法制备。用
三氟乙酸对含
硅膜2c进行脱甲
硅烷基化反应,得到3c。所有的聚合物膜,特别是那些具有扭曲
联苯基的膜,都显示出高的透气性。例如,它们的
氧气渗透率(P O 2)值在130至1400 barrers之间。在
联苯基团中具有两个
氯原子的膜2d在本发明的聚合物中显示出最高的气体渗透性(P O 2= 1400barrers)。©2010 Wiley Periodicals,Inc. J Polym Sci A部分:Polym