物理化学学报Issue(1)：28-33,6.DOI:10.3866/PKU.WHXB201311011
纳米银对铕-吡啶-2,6-二羧酸配合物荧光增强效应的研究
Studies of Enhanced Fluorescence Effects of Europium(III) Dipicolinic Acid Complex by Silver Nanoparticles
摘要
Abstract
The enhanced fluorescence effect of silver nanoparticles on a europium complex, Eu(III)DPA, where DPA is dipicolinic acid (C7H5NO4), with deionized (DI) water, heavy water, ethanol, and dimethylformamide as solvents, was studied. The results indicated that with increasing silver nanoparticle concentration, the intensities of the electric dipole transition (5D0→7F2)and magnetic dipole transition (5D0→7F1) first increased and then decreased, and the enhancement efficiency of 5D0→7F2 was higher than that of 5D0→7F1. The enhanced fluorescence effect of silver nanoparticles on Eu(III)DPA was maximum in ethanol. In the DI water, heavy water, and ethanol solution systems, the asymmetric ratio increased significantly, but there was little change in the dimethylformamide solution system. The observed silver nanoparticle dependence of the luminescent intensity of Eu(III)DPA was considered to be the result of stronger coupling between the surface plasmon resonance and the excited luminescence centers, and reabsorption of the surface plasmon resonance of silver nanoparticles.关键词
纳米银/铕配合物/局部表面等离子体共振/荧光增强/溶剂Key words
Silver nanoparticle/Europium complex/Localized surface plasmons resonance/Enhanced fluorescence/Solvent分类
化学化工引用本文复制引用
王悦辉,王婷,周济..纳米银对铕-吡啶-2,6-二羧酸配合物荧光增强效应的研究[J].物理化学学报,2014,(1):28-33,6.基金项目
The project was supported by the National Natural Science Foundation of China (61302044), Natural Science Foundation of Guangdong Province, China (S2012010010646), and Scientific Research Initial Foundation of University of Electronic Science and Technology of Zhongshan Institute, China (407YKQ06).@@@@国家自然科学基金(61302044),广东省自然科学基金(S2012010010646)和电子科技大学中山学院科研启动基金(407YKQ06)资助项目 （61302044）
