摘要
以含氟的二胺5,5′-(六氟异丙基)-二-(2-氨基苯酚)(6FHP)及二酐3,3′,4,4′-联苯四甲酸二酐(BPDA)为单体.首先合成了经酰胺化的主链上带有活性羟基的含氟聚酰亚胺,再通过 Mitsunobu 反应将分散红1(DR1)共价链接到聚酰亚胺的侧链骨架上,合成了含偶氮苯侧链型聚酰亚胺.利用 IR、UV-Vis、DSC-TG 等手段对聚合物进行了结构和热性能表征,示差扫描量热分析(DSC)测得其玻璃化转变温度为298℃,热重分析(TGA)测得其热分解温度为398℃.研究了聚合物的 N-甲基-2-吡咯烷酮(NMP)溶液和聚合物薄膜在紫外光诱导下的光异构化及热回复异构化行为,结果表明,它们在一定波长紫外光诱导下均能发生光致变色现象.
In this experiment,the fluorine-containing organic polymer which used,2,2-Bis (3-amino-4- hydroxyypheny 1)hexafluoropropane (6FHP) and 3,3',4,4'-Bisphenyltetracarboxylic (BPDA) is synthesized.It is a first-step preparation of a preimided hydroxy-containing polyimide,followed by the covalent bonding of dispersed red 1 (DR1),onto the backbone of the polyimide via the Mitsunobu reaction.The side polyimide containing azobenzene group is synthesized.The chemical structure and thermal properties of polyimide are characterized using FTIR,UV-Vis Spectroscopy and DSC-TGA.The differential scanning calorimeter (DSC) and thermal gravimetric analysis (TGA) exhibited Tg and the temperature Td of polymer are 298 and 398 'C,respectively.The UV-induced trans/cis photoisomerization and the thermal reflex-isomerization behavior are investigated for the polymer in solution and in film.The results indicate that the polymer solution and polymer film can undergo photochromism after a given UV wavelength photoinduction.
出处
《红外与激光工程》
EI
CSCD
北大核心
2006年第z2期159-163,共5页
Infrared and Laser Engineering
基金
江苏省高校自然科学基金(05KJB150016)
江苏大学高级人才基金(06JDG015)
关键词
聚酰亚胺
偶氮苯
光致变色
光异构化
Polyimide
Azobenzene
Photochromism
Photoinduced isomerization
作者简介
徐红良(1982-),男,安徽望江人,硕士生,主要从事光学材料的研究.
