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用自组装方法将巯基乙酸(MPA)与ZnO纳米晶薄膜(ZDF)通过共价键偶联到一起,形成纳米晶/巯基乙酸复合膜(ZDF/MPA)。采用发光光谱和XPS电子能谱技术,研究了ZDF/MPA的荧光特性以及它们之间的能量传递机制。研究发现ZDF/MPA中ZnO自由激子发光和束缚激子发光强度随着巯基乙酸的浓度增大而分别呈现不同的非线性减弱关系,当巯基乙酸达到一定的浓度量时,ZnO荧光完全消失。研究表明:ZnO纳米薄膜与MPA之间能够发生成键作用,并且在成键之后发生了能量传递。
The self-assembly method was used to couple thioglycolic acid (MPA) with ZnO nanocrystalline thin film (ZDF) through covalent bond to form nanocrystalline / thioglycolic acid composite membrane (ZDF / MPA). The fluorescence characteristics of ZDF / MPA and the energy transfer mechanism between them were studied by using luminescence spectroscopy and XPS electron spectroscopy. The results showed that the free exciton emission and bound exciton emission intensities of ZDF / MPA showed different nonlinear decreasing relations with the increase of thioglycolic acid concentration, respectively. When thioglycolic acid reached a certain concentration, ZnO fluorescence disappeared completely. The results show that the bonding between the ZnO nanostructures and the MPA can occur and the energy transfer occurs after bonding.