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以0~20%的1,3-二溴苯为第三单体,1,4-二溴苯为第二单体与对苯醌二亚胺用Ni(Ⅱ)催化法合成了不同比例的聚(对苯醌二亚胺-1,4-二溴苯-1,3-二溴苯)无规共聚物。通过红外光谱(FT-IR)、紫外可见吸收光谱(UV-Vis)、X射线粉末衍射(XRD)、热重分析(TG)、循环伏安(CV)、充放电等测试方法对共聚物进行了表征和性能测试,探讨了共聚物链接部位对性能的影响。紫外可见吸收光谱表明,共聚物在490nm左右均出现了最大吸收峰。与P1相比,P2、P3、P4、P5在此波长处的吸收峰,分别红移了10、19、34、24nm,其中共聚物P4红移了34nm,具有较高的共轭程度;温度达到671℃时,共聚物P2分解了40%,P1在温度达到577℃时,分解了40%;循环伏安测试表明,从P1、P2、P3至P4,共聚物的峰面积逐渐开始变大,而峰面积越大,共聚物的比电容越大;但是,共聚物P5的峰面积又开始变小;充放电测试结果表明,共聚物的放电时间从P1开始增大,直到P4,共聚物的放电时间达到最长,而从共聚物P5开始放电时间减少。
Using 0 ~ 20% 1,3-dibromobenzene as the third monomer, 1,4-dibromobenzene as the second monomer and p-benzoquinone diimine, Ni (Ⅱ) Poly (p-benzoquinone diimine-1,4-dibromobenzene-1,3-dibromobenzene) random copolymer. The copolymers were characterized by FT-IR, UV-Vis, XRD, TG, CV, charge-discharge and so on. Characterization and performance tests were carried out to investigate the effect of copolymer linkages on performance. UV-visible absorption spectra show that the copolymer has a maximum absorption peak around 490 nm. Compared with P1, the absorption peaks of P2, P3, P4 and P5 at this wavelength were red shifted by 10, 19, 34 and 24 nm, respectively, and the copolymer P4 was red shifted by 34 nm with a higher degree of conjugation. The temperature When the temperature reached 671 ℃, the copolymer P2 decomposed 40%, P1 decomposed 40% when the temperature reached 577 ℃. The cyclic voltammetry showed that the area of the copolymer gradually increased from P1, P2, P3 to P4 , But the larger the peak area is, the larger the specific capacitance of the copolymer is; however, the peak area of the copolymer P5 begins to decrease again. The charge and discharge test results show that the discharge time of the copolymer increases from P1 until P4, The discharge time reaches the maximum, while the discharge time from the copolymer P5 starts to decrease.