纳米银对铕-吡啶-2,6-二羧酸配合物荧光增强效应的研究

引用本文: 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, 30(1): 28-33. doi: 10.3866/PKU.WHXB201311011 shu

Citation: WANG Yue-Hui, WANG Ting, ZHOU Ji. Studies of Enhanced Fluorescence Effects of Europium(Ⅲ) Dipicolinic Acid Complex by Silver Nanoparticles[J]. Acta Physico-Chimica Sinica, 2014, 30(1): 28-33. doi: 10.3866/PKU.WHXB201311011 shu

纳米银对铕-吡啶-2,6-二羧酸配合物荧光增强效应的研究

王悦辉 ^1, ,
王婷 ^2, ,
周济 ^3,

基金项目:
国家自然科学基金(61302044)，广东省自然科学基金(S2012010010646) (61302044)，广东省自然科学基金(S2012010010646)

电子科技大学中山学院科研启动基金(407YKQ06)资助项目 (407YKQ06)

摘要:

研究了纳米银对分别以水、重水、乙醇和二甲基甲酰胺为溶剂的铕-吡啶-2，6-二羧酸(Eu(Ⅲ)DPA)配合物溶液的荧光增强效应. 研究结果表明，Eu(Ⅲ)DPA溶液中加入纳米银，电偶极跃迁(⁵D₀→⁷F₂)和磁偶极跃迁(⁵D₀→⁷F₁)发射强度先增强而后逐渐下降，⁵D₀→⁷F₂的荧光增强效率高于⁵D₀→⁷F₁的荧光增强效率. 在乙醇溶剂中纳米银对Eu(Ⅲ)DPA溶液的荧光增强效应最大. 在水或重水或乙醇溶剂中，Eu(Ⅲ)DPA的不对称率明显提高，而在二甲基甲酰胺溶剂中几乎不变. 分析认为，纳米银对Eu(Ⅲ)DPA溶液荧光的影响与纳米银表面等离子体共振与激发态荧光中心强烈耦合以及表面等离子体再吸收有关.

关键词:

English

Studies of Enhanced Fluorescence Effects of Europium(Ⅲ) Dipicolinic Acid Complex by Silver Nanoparticles

1.
1 Department of Chemistry and Biology Engineering, University of Electronic Science and Technology of Zhongshan Institute, Zhongshan 528402, Guangdong Province, P. R. China;
2 Beijing General Research Institute for Nonferrous Metals, Beijing 100088, P. R. China;
3 State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, P. R. China
Received Date: 22 July 2013
Available Online: 01 January 2014
Fund Project:
国家自然科学基金(61302044)，广东省自然科学基金(S2012010010646)

电子科技大学中山学院科研启动基金(407YKQ06)资助项目

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.

Key words:

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沈阳化工大学材料科学与工程学院沈阳 110142

纳米银对铕-吡啶-2,6-二羧酸配合物荧光增强效应的研究

English

Studies of Enhanced Fluorescence Effects of Europium(Ⅲ) Dipicolinic Acid Complex by Silver Nanoparticles

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

纳米银对铕-吡啶-2,6-二羧酸配合物荧光增强效应的研究

English

Studies of Enhanced Fluorescence Effects of Europium(Ⅲ) Dipicolinic Acid Complex by Silver Nanoparticles

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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