Synthesis of Hydroxymethyl-Functionalized Polyimides and the Facile Attachment of an Organic Dye Utilizing Bis(isocyanates) and Bis(acid chloride) Linkers
作者:Michael E. Wright、Stephen Fallis、Andy J. Guenthner、Lawrence C. Baldwin
DOI:10.1021/ma0503920
日期:2005.11.1
of the polymers 4 and 5 with excess adipoyl chloride afforded polymers 8 and 9, respectively, with a pendent acid chloride functional group. Further reaction with disperse red 1 (DR-1) in the presence of DMAP led to rapid esterification, yielding high-Tg dye-attached polyimides 11 (Tg 168 °C) and 12 (Tg 175 °C). Treatment of polymer 4 with sebacoyl chloride (a longer spacer) and then DR-1 in a similar
制备式3的两个新的单体,X -双(4-氨基苯氧基)苯甲醇(其中X = 5,图3a ; X = 4,图3b),并且每个与2,2-双(4-氨基苯基)六氟丙烷,6共聚-FDA和6 mol%的邻苯二甲酸酐作为封端,分别得到聚酰亚胺4和5。聚合物中的CH 2 OH基团可以用过量的1,6-己二异氰酸酯改性,以提供聚合物6的100%改性,同时形成侧基和反应性异氰酸酯基。该后一种聚合物显示出与分散红1(DR-1)反应生成聚酰亚胺负载的染料(7,T g 199°C)通过形成氨基甲酸酯键。用过量的己二酰氯处理聚合物4和5,分别得到具有侧基酰氯官能团的聚合物8和9。在DMAP存在下与分散红1(DR-1)进一步反应导致快速酯化,产生高T g染料附着的聚酰亚胺11(T g 168°C)和12(T g 175°C)。用癸二酰氯(较长的间隔基)处理聚合物4,然后以类似方式处理DR-1,得到聚合物13(T g 156℃)。如在溶液中在1300(〜0