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应用AFM及力曲线的统计方法(forcecurvemethod)和Tapping/Phase功能,比较系统地研究了Glass/ITO基底上旋涂厚度为5μm的非线性光学功能高分子薄膜。结果发现,不同基底对于薄膜结构及分子构象没有明显影响。客体分子(molecule-2)在常温条件下能够以氢键的方式镶嵌在主体高分子(molecule-1)链上的—OH官能团周围和相邻的分子链间,形成特征的纳米级带状结构。ITO基底上非线性光学功能高分子薄膜在160～180℃条件下和经3000V强电场极化后,客体分子和主体高分子不同程度地进行了化学交联反应,生成新的非线性光学高分子;薄膜的微观结构由常温时的带状结构变为纳米环状结构,膜表面呈现出均匀平滑的表面形貌,并获得了理想的电光性能信号。分子键合类型的变化使得薄膜的组分发生了变化,并引起了薄膜的微观结构的改变。力曲线的统计方法和Phase的相关信息为此提供了重要证据。
The AFM and force curve statistical methods (forcecurvemethod) and Tapping / Phase function were used to systematically study the spin-coated non-linear optical functional polymer film with a thickness of 5μm on Glass / ITO substrate. The results showed that different substrates have no obvious effect on the structure and molecular conformation. At normal temperature, guest-2 molecule can be hydrogen-bonded around the -OH functional group on the molecule-1 chain and adjacent molecular chains to form a characteristic nanoscale band-like structure . After 160 ~ 180 ℃ and 3000V strong electric field polarization, the guest molecules and the host macromolecules chemically cross-linked to different extents to produce new nonlinear optical polymers The microstructure of the films changed from ribbon structure to nanorings structure at room temperature. The surface of the films showed uniform and smooth surface topography, and obtained the ideal electro-optical performance signal. Changes in the type of molecular bonding causes the composition of the film to change and cause changes in the microstructure of the film. The statistical method of force curve and the related information of Phase provide important evidence for this.