苯并二噁唑系列聚合物的合成及其光电性能的研究  

Synthesis and photoelectric properties of a series of poly(benzobisoxazole)s

作　　者：崔天放[1] 姜军强[1] 王晓丹[1] 

机构地区：[1]沈阳化工大学应用化学学院,辽宁沈阳110142

出　　处：《功能材料》2013年第4期555-558,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50743012);辽宁省教育厅科技计划资助项目(L2010431)

摘　　要：以4,6-二氨基-1,3-苯二酚盐酸盐为原料,分别与对苯二甲酸、1,4-萘二甲酸、2,6-萘二甲酸、2,5-噻吩二甲酸、4,4’-(1,2-二苯基乙烯)二甲酸、反丁烯二甲酸在多聚磷酸介质中反应,合成了单环的聚(1,4-亚苯基)苯并二噁唑(PBO)、稠环的聚(1,4-亚萘基)苯并二噁唑(1,4-PNBO)和聚(2,6-亚萘基)苯并二噁唑(2,6-PNBO)、杂环的聚(2,5-亚噻吩基)苯并二噁唑(PTBO)、含有两个苯环的聚-4,4’-亚(1,2-二苯乙烯基)苯并二噁唑(4,4’-PDPEBO)和直链烯烃的聚亚乙烯基苯并二噁唑(PBOV)。采用傅立叶红外光谱、元素分析对系列聚合物的结构进行了表征。利用电导率仪和荧光光谱仪,对系列聚合物的结构与性能之间的关系进行了分析。研究结果表明,PBO、1,4-PNBO、2,6-PNBO、4,4’-PDPEBO、PTBO和PBOV电导率依次减小;系列聚合物的荧光发射光谱和激发光谱的形状都相近,聚合物的最大发射峰波长是一致的,其中2,6-PNBO的荧光强度最强。A series of poly（benzobisoxazole）s,including poly（p-phenylene-benzobisoxazole）（PBO）,poly（1,4-naphthalene benzobisoxazole）（1,4-PNBO）,poly（2,6-naphthalene benzobisoxazole）（2,6-PNBO）,poly（2,5-thiophene benzobisoxazole）（PTBO）,poly-4,4＇-（1,2-diphynylethylene benzobisoxazole）（4,4＇-PDPEBO） and poly（2,6-diylvinylene benzobisoxazole）（PBOV）,were synthesized by polycondensation of 4,6-diamino-1,3-benzenediol dihydrochloride with terephthalic acid,1,4-naphthalene dicarboxylic acid,2,6-naphthalenedicarboxylic acid,2,5-thiophenedicarboxylic acid,4,4＇-（1,2-diphynylethylene） dicarboxylic acid and 2,6-diylvinylenedicarboxylic acid respectively in polyphosphoric acid.The relationship between the resulting polymer chain structures and the properties of the polybenzobisoxazoles was also investigated.The results show that the target polymers were successfully synthesized characterized by Fourier transform infrared spectra and elemental analysis.The relationship between the structure and properties of poly（benzobisoxazole）s was analyzed using the conductivity meter and fluorescence spectrometer.The results of the study show that,the conductivity of PBO,1,4-PNBO,2,6-PNBO,4,4＇-PDPEBO,PTBO,PBOV decreased in turn,and the data of PBO was 37.8 mS/cm,the conductive mechanism of polymer is mainly through the delocalization of the electrons in polymer molecules.π electron clouds can flow between the adjacent carbon atoms,but the electric conductivity is lower when conjugate chain become longer to some extent;in addition,the shape of poly（benzobisoxazole）s of fluorescence emission spectrum and stimulate spectrum are very similar,the biggest emission peak wavelength of poly（benzobisoxazole）s are almost consistent,and among them the fluorescence intensity of 2,6-PNBO is the strongest.

关 键 词：苯并二噁唑聚合物 聚(1 4-亚苯基)苯并二噁唑 合成 电导率 光电特性 

分 类 号：O633.5[理学—高分子化学]