含3-(5-嘧啶基)-噻吩单元共轭聚合物的合成及性能研究
Synthesis and Properties of Conjugated Polymers Containing 3-(5-Pyridine)-Thiophene Unit
DOI: 10.12677/MS.2019.96077, PDF,    国家自然科学基金支持
作者: 张轲：新疆大学化学化工学院，石油天然气教育部重点实验室，新疆 乌鲁木齐；阿布都克尤木•阿布都热西提, 吐尼莎古丽•阿吾提*：新疆大学功能高分子重点实验室，新疆 乌鲁木齐
关键词: 噻吩；嘧啶；碳碳偶联；共轭聚合物；Thiophene； Pyrimidine； Carbon-Carbon Coupling； Conjugated Polymers
摘要: 以二价钯配合物作为催化剂，通过Sonogashira或Suzuki碳碳偶联反应制备了三种含3-(5’-嘧啶基)-噻吩单元的聚苯撑乙炔类(P1)、聚芴类(P2)和聚咔唑类(P3) π-共轭荧光聚合物。经傅立叶变换红外光谱(FT-IR)、氢核磁共振谱(1H-NMR)和X射线粉末衍射(XRD)对其结构进行了表征。利用紫外–可见光谱(UV-Vis)、荧光光谱(PL)和循环伏安(CV)等测试手段对其光学与电化学性能进行了研究，并研究了聚合物在CHCl3-CF3COOH溶液中的酸致变色行为。结果表明三种聚合物在氯仿溶液和薄膜状态下的长波长处有明显的紫外可见吸收和较强的荧光活性。聚合物的相对荧光量子效率分别为52.3%、31.2%和4.5%。P1、P2、P3的算致变色行为均较差，酸浓度与吸光度之间均无线性关系。通过循环伏安测试表明聚合物均具有一定的空穴传输行为。
Abstract: Three kinds of polyphenylene acetylenes (P1), polyfluorene (P2) and polycarbazole (P3) pi-conju- gated fluorescent polymers containing 3-(5-(pyrimidine)-thiophene units were synthesized by carbon-carbon coupling reaction of Sonogashira or Suzuki with Pd complex as catalyst. The struc-ture was characterized by Fourier transform infrared spectroscopy (FT-IR), hydrogen nuclear magnetic resonance (1H-NMR) and X-ray powder diffraction (XRD). The optical and electrochemical properties of the polymer in CHCl3-CF3COOH solution were studied by means of UV-Vis, PL and CV. The acid chromogenic behavior of the polymer in CHCl3-CF3COOH solution was also studied. The results show that the three polymers have obvious ultraviolet-visible absorption and strong fluorescence activity at long wavelength in chloroform solution and film state. The relative fluo-rescence quantum efficiencies of polymers are 52.3%, 31.2% and 4.5% respectively. The calculat-ing chromogenic behavior of P1, P2 and P3 was poor, and the relationship between acid concen-tration and absorbance was wireless. Cyclic voltammetric measurements show that all polymers exhibit a certain void transport behavior.
文章引用：张轲, 阿布都克尤木•阿布都热西提, 吐尼莎古丽•阿吾提. 含3-(5-嘧啶基)-噻吩单元共轭聚合物的合成及性能研究[J]. 材料科学, 2019, 9(6): 612-624. https://doi.org/10.12677/MS.2019.96077

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