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用可见-紫外分光光度法观察了聚(3-己烷基)噻吩(P3HexTh)在氯仿中的π-聚集行为。将乙酸、乙醇、甲醇等聚(3-己烷基)噻吩难溶溶剂加入P3HexTh的氯仿溶液时,产生比较稳定的聚合物聚集态。用直径0.20~0.01μm滤膜过滤P3HexTh溶液的实验结果显示聚合物胶体颗粒随着溶液中乙酸量的增加而增大。金属配合物催化法合成的头对尾P3HexTh(Zn/Ni)发生π-聚集行为,而用化学氧化法合成的P3HexTh(Fe)没有出现明显的π-聚集行为。
The π-aggregation behavior of poly (3-hexyl) thiophene (P3HexTh) in chloroform was observed by visible-UV spectrophotometry. The poly (3-hexyl) thiophene poor solvent, such as acetic acid, ethanol and methanol, was added to the solution of P3HexTh in chloroform, resulting in a more stable polymer aggregation state. The experimental results of filtering P3HexTh solution with 0.20-0.01 μm diameter membrane filter showed that the polymer colloidal particles increased with the increase of acetic acid in solution. The π-aggregation behavior of head-to-tail P3HexTh (Zn / Ni) synthesized by metal complex catalysis was not observed, whereas P3HexTh (Fe) synthesized by chemical oxidation showed no obvious π-aggregation behavior.