电致变色/电控荧光双功能聚合物的合成及性能

Synthesis and Properties of Electrochromic/Electrofluorochromic Bifunctional Polymer

将电活性双胺单体4,4'-二氨基二苯醚与1,2,4,5-环己烷四甲酸二酐共聚,得到电活性聚酰胺酸聚合物.再通过后功能化方法,采用酰胺化反应将2-氨基芴引入到聚合物结构中,合成了荧光聚合物.通过核磁、红外和凝胶渗透色谱证实了聚合物的结构.该聚合物在0～0. 8 V的电压下展示出可逆的电化学活性.在利用电压改变苯胺齐聚物链段的氧化状态的过程中,聚合物薄膜发生了明显的颜色变化,展现出良好的电致变色性质.荧光性质随着施加电压的改变而变化,展现出优异的电控荧光特性.

A novel polyamic acid bearing oligoaniline pendant was synthesized via copolymerization,followed by post-polymerization of fluorene through the amidation reaction with the assistance of DCC/DMAP.The resultant polymer was characterized in detail through 1 H NMR,FTIR and GPC.As expected,this electroactive polymer exhibits good electrochromic performance with high optical contrast value,rapid switching rate and satisfied coloration efficiency.Moreover,a novel electrofluorochromic feature is easily achieved through the introduction of fluorescent fluorene groups into the polymeric architecture.This dual electrochromic and electrofluorochromic polymer shows great potential in various intelligent applications,such as sensors,displays,and wearable devices.