染料掺杂聚吡咯微纳米管的合成及其影响因素研究

以水溶性染料酸性红G为掺杂剂, 以三氯化铁为氧化剂, 采用无模板自组装方法制备得到了聚吡咯微/纳米管. 利用FTIR, XRD, SEM, TEM对所合成的聚吡咯微/纳米管的结构形貌进行了表征. 结果表明, 搅拌条件下, 酸性红G原位掺杂得到的聚吡咯管直径在100～910 nm之间, 管长大于50 μm. XRD表明所得聚吡咯微/纳米管为无定形态. 研究了反应时间、反应温度、吡咯浓度、掺杂剂与吡咯浓度比、氧化剂滴加速度等对聚吡咯管形貌的影响, 获得了最佳的反应条件.

Synthesis and Formation Condition Study on the Dye-doped Polypyrrole Micro/Nanotubules

Polypyrrole (PPy) micro/nanotubules were synthesized via a self-assembly method using 5-(acetylamino)-4-hydroxy-3-(phenylazo)-2,7-naphthalenedisulfonic acid (acid red G) as the dopant and FeCl3 as the oxidant and were characterized by SEM, TEM, XRD and FT-IR spectra. These PPy tubules doped with acid red G showed 100～910 nm in diameter and longer than 50 μm in average length. XRD spectra indicated that the prepared PPy micro/nanotubules were amorphous. Various experimental conditions, including the reaction time and temperature, the concentration of pyrrole monomer, the concentration ratio between the dopant and pyrrole monomer, and rate of addition of oxidant have been investigated for their influences on the morphology of the synthesized PPy tubules. Based on the research results, the optimized synthesis condition for the PPy tubules was obtained.