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以嵌段共聚物P123为模板剂、酚醛树脂预聚物(resol)为骨架材料,通过气流法制备宏观平行取向介孔酚醛树脂薄膜,并利用乙醇萃取法去除模板剂,引入染料小分子罗丹明B,制备了介孔孔道填充荧光分子的酚醛树脂薄膜。通过透射电子显微镜(TEM)、掠入射小角X射线衍射(GISAXS)和X射线衍射仪(XRD)对其性能进行表征分析。结果表明,制备的介孔酚醛树脂薄膜具有宏观取向性。荧光光谱仪(PL)分析结果表明,染料复合的介孔酚醛树脂薄膜具有明显的荧光偏振特性,该特性可通过调整溶胶前驱液的浓度来调节。
Using the block copolymer P123 as a template and the resol resin as a framework material, a macro-parallel oriented mesoporous phenolic resin film was prepared by a gas flow method and the template was removed by an ethanol extraction method. The small molecule rhodamine B, a phenolic resin membrane filled with fluorescent molecules in mesoporous channels was prepared. Their properties were characterized by transmission electron microscopy (TEM), grazing incidence small angle X-ray diffraction (GISAXS) and X-ray diffraction (XRD). The results show that the prepared mesoporous phenolic resin film has macroscopic orientation. Fluorescence spectrometry (PL) analysis results show that dye-complexed mesoporous phenolic resin has obvious fluorescence polarization characteristics, which can be adjusted by adjusting the concentration of sol precursor.