Novel Starburst Triarylamine-Containing Electroactive Aramids with Highly Stable Electrochromism in Near-Infrared and Visible Light Regions
作者:Hung-Ju Yen、Hung-Yi Lin、Guey-Sheng Liou
DOI:10.1021/cm103552k
日期:2011.4.12
A series of solution-processable near-infrared (NIR) electrochromic aromatic polyamides with starburst triarylamine units in the backbone were prepared by the phosphorylation polyamidation from a newly synthesized diamine monomer, N,N-bis[4-(4-methoxyphenyl-4′-aminophenylamino)phenyl]-N′,N′-di(4-methoxyphenyl)-p-phenylenediamine, and two aromatic dicarboxylic acids. These polymers were highly soluble
通过新合成的二胺单体N,N-双[4-(4-甲氧基苯基-4')的磷酸化酰胺化反应,制备了一系列骨架可溶的近红外(NIR)电致变色芳族聚酰胺骨架。 -氨基苯基氨基)苯基] -N',N'-二(4-甲氧基苯基)-p-苯二胺和两种芳族二羧酸。这些聚合物在许多有机溶剂中高度可溶,并显示出与高玻璃化转变温度和高炭产率(在800℃下于氮气中高于66%)相关的有用的热稳定性。聚合物膜在可见光范围和NIR区域均显示出高对比度的可逆电化学氧化和电致变色现象,对于长期电致变色操作,其还显示出较高的着色效率(CE),较低的切换时间和较高的稳定性。在第一个氧化阶段,聚酰胺Ia薄膜在近红外(CE = 290 cm 2/ C)区域具有可逆的电活性稳定性(相对于其初始注入电荷,在0.6%的损耗范围内超过10000次)。作为第二氧化阶段的二价自由基形式,聚合物薄膜仍显示出出色的电致变色/电活性稳定性(超过10000个循环开关),且CE增强到339