以2,4,2 '-三羟基偶氮苯、丁二酸为原料,首先将丁二酸转化为丁二酰氯,利用酰氯基团与羟基的反应活性,通过A2+ B3方法合成超支化偶氮聚酯.采用红外光谱等表征了聚合物的结构,通过UV-Vis光谱研究了偶氮聚合物的光致变色特性.结果表明,超支化偶氮聚酯π-π*跃迁最大吸收峰和单体2,4,2'三羟基偶氮苯一致,且不受聚合物结构的影响,反-顺异构化反应速率随聚合物结构中偶氮基元的增加而增加,并大于偶氮苯单体的光异构反应速率.热分析表明,合成聚合物在200℃以内具有较好的热稳定性.
参考文献
| [1] | Mercedes Marcos;Rafael Alcala;Joaquin Barbera .Photosensitive Ionic Nematic Liquid Crystalline Complexes Based on Dendrimers and Hyperbranched Polymers and a Cyanoazobenzene Carboxylic Acid[J].Chemistry of Materials: A Publication of the American Chemistry Society,2008(16):5209-5217. |
| [2] | Zhen Li;Anjun Qin;Jacky W.Y.Lam;Yuping Dong;Yongqiang Dong .Facile Synthesis,Large Optical Nonlinearity,and Excellent Thermal Stability of Hyperbranched Poly(aryleneethynylene)s Containing Azobenzene Chromophores[J].Macromolecules,2006(4):1436-1442. |
| [3] | Pengchao Che;Yaning He;Xiaogong Wang .Hyperbranched Azo-Polymers Synthesized by Azo-Coupling Reaction of an AB_2 Monomer and Postpolymerization Modification[J].Macromolecules,2005(21):8657-8663. |
| [4] | Yu, B.;Jiang, X.;Wang, R.;Yin, J. .Multistimuli responsive polymer nanoparticles on the basis of the amphiphilic azobenzene-contained hyperbranched poly(ether amine) (hPEA-AZO)[J].Macromolecules,2010(24):10457-10465. |
| [5] | 尹荣,关晓晖,赵吉丽,龚剑.12-硅钨酸/PMMA复合薄膜的制备及光致变色性能[J].高分子材料科学与工程,2011(04):155-158. |
| [6] | 孙元,邓新华,边栋材.PVA荧光纤维的制备及戊二醛缩醛化[J].高分子材料科学与工程,2008(04):128-131. |
| [7] | Kati Gharagozloo-Hubmann;Olga Kulikovska;Volker Borger;Henning Menzel;Joachim Stumpe .Surface Relief Gratings in Azobenzene-Containing Polymers with Linear and Star-Branched Architectures: A Comparison[J].Macromolecular chemistry and physics,2009(21):1809-1817. |
| [8] | Li, ZA;Yu, G;Hu, P;Ye, C;Liu, YQ;Qin, JG;Li, Z .New Azo-Chromophore-Containing Hyperbranched Polytriazoles Derived from AB(2) Monomers via Click Chemistry under Copper(I) Catalysis[J].Macromolecules,2009(5):1589-1596. |
| [9] | 张其震,殷晓颖,李爱香.周边含己氧基的三代光致变色液晶树枝状大分子的光化学[J].化学学报,2006(16):1743-1748. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%