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利用重氮基的光分解活性、采用自组装的方法将带有功能基团NH2的4-(4-氨基苯乙炔基)苯共价键接在石英基片上制备了共轭单分子膜;利用膜上NH2的反应活性,通过酰胺化反应或自组装的方式将稠环芘修饰在单分子膜上,构筑了含有芘荧光探针的稳定发光超薄膜;该薄膜能够与电子受体硝基苯胺间因相互作用形成电荷转移络合物而使其荧光猝灭,并且该薄膜对硝基苯胺同分异构体的荧光猝灭响应有明显的差异,其中对硝基苯胺对功能薄膜的猝灭效应最为明显,其次是邻硝基苯胺和间硝基苯胺;且具有明显的浓度依赖性.
The conjugated monolayer was prepared by covalently bonding 4- (4-aminophenylethynyl) benzene with functional group NH2 to the quartz substrate by self-assembly method using the photolytic activity of diazo group. The NH2 reactivity in the membrane was modified by amidation or self-assembly to form a stable luminescent ultrafilm containing pyrene fluorescent probe. The thin film was able to react with electron acceptor nitroaniline The fluorescence quenching of the charge-transfer complex formed by the interaction and the significant difference in the fluorescence quenching response of the p-nitroanilide isomer, in which the para-nitroaniline quenching of the functional film The most obvious effect, followed by o-nitroaniline and m-nitroaniline; and has a clear concentration-dependent.