光致固液转变型偶氮苯聚合物的合成与光响应性能  

Synthesis and Photoresponse Properties of Photoinduced-Solid-Liquid Transition of Azopolymers

作　　者：李晓丽 赵霄雷 彭锦雯[1] 许建 马丽丽 刘远立[1] 邓卫星[1] Xiaoli Li;Xiaolei Zhao;Jinwen Peng;Jian Xu;Lili Ma;Yuanli Liu;Weixing Deng(School of Materials Science and Engineering,Guilin University of Technology,Guilin 541000,China)

机构地区：[1]桂林理工大学材料科学与工程学院,广西桂林541000

出　　处：《高分子材料科学与工程》2021年第6期43-48,56,共7页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(21864010);广西省自然科学基金资助项目(2018GXNSFAA050030)

摘　　要：偶氮苯聚合物由于其独特的光响应性能在光分子开关、信息存储等领域具有潜在的应用,但偶氮苯顺反异构化转变及光致固液转变的影响因素仍需要更深入的研究。文中设计并合成了4种偶氮苯聚合物,对比了偶氮苯相连的柔性链对其光响应性能的影响。研究发现,引入柔性链段使偶氮苯异构化时间从20 min降到100 s,同时含柔性链段的偶氮苯聚合物具有光致固液转变的能力,而不含柔性链段的偶氮苯聚合物不能发生光致固液转变。Azopolymers,containing azophenyl groups,have potential applications in photomecular switch,information storage for their unique photoisomerization properties.However,more detail investigations are urgently needed to develop the effect of azopolymer molecular structures on their photoisomerization and photoinduced-solid-liquid transition.Herein,four azopolymers with/without flexible segments connected to azophenyl were prepared and their photoinduced-solid-liquid transition behaviors were studied in detail.The results demonstrate that flexible segments tremendously accelerate the isomerization of azopolymers from 20 min to 100 s,and azopolymers with flexible segments exhibit a reversible solid-liquid transition under UV light,while azopolymers without flexible segments cannot undergo solid-liquid transition under UV light.

关 键 词：偶氮苯聚合物 光致异构 光致固液转变 

分 类 号：TB381[一般工业技术—材料科学与工程]