8-羟基喹啉插层蒙脱土/丙烯酸酯复合荧光材料的制备

Preparation of 8-OQ Intercalated Montmorillonite / Acrylate Composite Fluorescent Material

为了制备具有良好加工性能和高荧光强度的8-羟基喹啉(8-OQ)类有机光致发光材料,以铝基蒙脱土(MMT)中的Al(Ⅲ)为配位中心、8-OQ为配体合成了高荧光性8-OQ插层MMT(FS-MMT),并将其与环氧丙烯酸酯(EA)复合,采用UV固化法制备了高荧光性FS-MMT/EA涂层。采用红外、X射线衍射、紫外-可见光吸收光谱及分子荧光谱仪表征了FSMMT,并研究了FS-MMT/EA涂层的吸收及荧光光谱行为。结果表明,成功制备了FS-MMT,其紫外-可见光吸收光谱分析表明8-OQ与MMT上的Al(Ⅲ)发生配位作用;而荧光强度较Alq3显著增强。而FS-MMT/EA涂层的荧光发射峰出现在490 nm附近,较FS-MMT的发生了蓝移;同时荧光强度随FS-MMT含量增加而增强,且较FS-MMT的有明显升高。

To prepare the organic photoluminescence materials containing 8-hydroxyquinoline( 8-OQ) with better processing performance and higher fluorescence intensity,strong-fluorescent montmorillonite( MMT) intercalated with8-OQ( FS-MMT) was prepared based on Al( Ⅲ) of Al-based MMT as coordination center and 8-OQ as ligand,strongfluorescent FS-MMT / EA coatings were prepared by UV-curing method and mixing FS-MMT into epoxy acrylate( EA).FS-MMT was characterized by IR,XRD,UV-Vis absorption and molecular fluorescence spectrometer,and absorption and fluorescence spectral behavior of FS-MMT / EA coatings were investigated by the above-mentioned characterization method. The results show that FS-MMT was successfully prepared,and its UV-Vis spectrum analysis indicates 8-OQ coordinated with Al( Ⅲ) on modified MMT,and that its fluorescence intensity is enhanced more significantly than 8-hydroxyquinoline aluminum( Alq3). Meanwhile,the fluorescence emission peak of FS-MMT/EA coatings appears at around 490 nm,and comparing with FS-MMT,the fluorescence emission spectra of FS-MMT / EA coatings exhibit blue shift. And the fluorescence intensity of FS-MMT / EA coatings is enhanced with increasing the content of FS-MMT,and it grows stronger than FS-MMT.