可溶性聚3-[(二茂铁甲酸乙酯)三乙氧基]氧基噻吩的合成与性质表征

采用化学聚合方法合成了一种含二茂铁电活性基团的新型导电聚噻吩衍生物聚3-(二茂铁甲酸乙酯)三乙氧基]氧基噻吩, 用1H NMR和红外光谱等方法对其结构进行了表征. 实验结果表明, 该聚合物可溶于三氯甲烷、四氢呋喃和丙酮等有机溶剂, 并且二茂铁在聚合物中依然保持良好的氧化还原活性, 对钠离子具有良好的选择性络合作用.

Synthesis and Characterization of Soluble Poly[3-(ferrocenyl-ethyl formate)triethoxy]thiophene

Poly3-(ferrocenyl-ethyl formate)triethoxy]thiophene was prepared by chemical polymerization with iron(Ⅲ) chloride as an oxidant. The resulting polymer is soluble in ordinary solvents, such as chloroform, tetrahydrofuran, acetone, xylene, etc.. The polymer structure was further confirmed by NMR and IR. The optical and electrochemical properties were examined by UV-Vis and PL spectroscopies and cyclic voltammetry. It exhibits a maximum of absorption at 553 nm and a maximum emission at 654 nm in chloroform solution, the doped polymers show two broad absorption peaks at 502 and 860 nm, which are characteristic of the presence of bipolarons. In addition, cyclic voltammetric measurements reveal that the ferrocene substituents remain a high redox activity and stability. Moreover, this resulting polythiophene derivative containing tetraethoxy units show a great selectivity and sensitivity towards sodium cation.