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以煅烧的分子筛SBA 15为主体材料,二溴对氯偶氮胂(dibromochloro-arsenazo,DBC-ASA)作客体材料,以水为介质,用液相移植法制备了(SBA 15)-(DBC-ASA)主客体复合材料。用粉末X射线衍射、Fourier变换红外光谱、固体扩散漫反射吸收光谱及发光研究表征了所制得的复合材料(SBA 15)-(DBC-ASA)的性质。X射线衍射结果表明:(SBA 15)-(DBC-ASA)主客体复合材料分子筛骨架存在且有序度高。红外光谱分析表明:较低量的DBC-ASA引入SBA 15分子筛中,分子筛骨架结构仍然存在,但引入量较大时,分子筛的骨架有序度明显降低。固体扩散漫反射吸收光谱研究表明:DBC-ASA处于分子筛SBA 15孔道内,分子筛孔道对DBC-ASA具有立体限域效应。发光光谱分析表明:所制得的样品的非辐射过程强,导致电子光子作用极强,产生电荷迁移和跃迁,发生Stokes位移,光谱谱带变宽。
(SBA 15) - (DBC-ASA) was prepared by liquid-phase grafting using dibromo-para-arsenazo (DBC-ASA) as the bulk material and calcined molecular sieve SBA 15 as the bulk material. ASA) host-guest composite material. The properties of the prepared composite material (SBA 15) - (DBC-ASA) were characterized by powder X-ray diffraction, Fourier transform infrared spectroscopy, solid-diffusion diffuse reflectance absorption spectroscopy and luminescence studies. The results of X-ray diffraction show that the skeletons of (SBA 15) - (DBC-ASA) host-guest composites exist and are highly ordered. Infrared spectroscopy analysis showed that the lower molecular weight of DBC-ASA was introduced into SBA 15 molecular sieves, and the framework structure of molecular sieves still existed. However, when the amount of DBC-ASA was larger, the framework orderliness of molecular sieves was obviously decreased. The solid-diffusion diffuse reflectance absorption spectra showed that DBC-ASA was in the pore of SBA 15 and the pore of molecular sieve had a steric limiting effect on DBC-ASA. The results of luminescence spectroscopy show that the non-radiation process of the prepared sample is strong, resulting in strong electron photon effect, charge transfer and transition, Stokes shift and broadening of the spectral band.