通过旋涂成膜方法制备了聚芴(PF)/乙基氰乙基纤维素[(E-CE)C]共混物超薄膜(厚度约为50nm),用原子力显微镜(AFM)、透射电子显微镜(TEM)研究了共混物超薄膜形态结构,并用荧光光谱仪研究了共混物超薄膜中聚芴的光致发光性能.实验发现,超薄膜表面形态结构分布均一,相结构随着(E-CE)C含量增加有规律的变化,表现为PF逐渐被(E-CE)C均匀"分隔"开来.还发现该超薄膜在纳米尺度范围内发生垂面微相分离.同时,超薄膜中聚芴发射光谱随(E-CE)C含量增加发生蓝移,发射峰半高宽变窄.实验结果表明高速旋涂制得的超薄膜形态结构表现出显著的浓度依赖性,明显地影响PF发射光谱性质.
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