Fluorescence Enhancement of Ag@SiO2 Nano Composite to Carboxylate Europium Complexes

HOU Fu-hua; ZHANG Hai-xia; CHU Qing-kai; FAN Jian-ru; WANG Ai-ling; CHU Hai-bin; ZHAO Yong

doi:10.3788/fgxb20123311.1181

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Fluorescence Enhancement of Ag@SiO₂ Nano Composite to Carboxylate Europium Complexes

更新时间：2020-08-12

- Fluorescence Enhancement of Ag@SiO₂ Nano Composite to Carboxylate Europium Complexes
- Chinese Journal of Luminescence Vol. 33, Issue 11, Pages: 1181-1186(2012)
- 作者机构：
  
  内蒙古大学化学化工学院,内蒙古呼和浩特,010021
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20123311.1181
  CLC： O482.31
- Received：14 August 2012，
  
  Revised：24 September 2012，
  
  Published：10 November 2012
- 稿件说明：
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侯福华, 张海霞, 褚庆凯, 范建茹, 王爱玲, 褚海斌, 赵永亮. Ag@SiO2纳米复合物对羧酸铕配合物的荧光增强[J]. 发光学报, 2012,(11): 1181-1186

HOU Fu-hua, ZHANG Hai-xia, CHU Qing-kai, FAN Jian-ru, WANG Ai-ling, CHU Hai-bin, ZHAO Yong-liang. Fluorescence Enhancement of Ag@SiO2 Nano Composite to Carboxylate Europium Complexes[J]. Chinese Journal of Luminescence, 2012,(11): 1181-1186
侯福华, 张海霞, 褚庆凯, 范建茹, 王爱玲, 褚海斌, 赵永亮. Ag@SiO2纳米复合物对羧酸铕配合物的荧光增强[J]. 发光学报, 2012,(11): 1181-1186 DOI： 10.3788/fgxb20123311.1181.

HOU Fu-hua, ZHANG Hai-xia, CHU Qing-kai, FAN Jian-ru, WANG Ai-ling, CHU Hai-bin, ZHAO Yong-liang. Fluorescence Enhancement of Ag@SiO2 Nano Composite to Carboxylate Europium Complexes[J]. Chinese Journal of Luminescence, 2012,(11): 1181-1186 DOI： 10.3788/fgxb20123311.1181.

摘要

分别以苯氧乙酸和对苯二甲酸为阴离子配体

以邻菲罗啉为中性配体

稀土铕离子为中心体

合成了两种三元稀土铕配合物Eu(Phen)

=苯氧乙酸)和Eu

(Phen)

(

=对苯二甲酸)。利用还原法制备纳米银溶胶

采用改进的Stöber法在银纳米颗粒外面包裹二氧化硅

通过控制正硅酸四乙酯(TEOS)的滴加时间和滴加量以控制二氧化硅壳层的生长厚度

得到Ag@SiO

核壳结构颗粒。通过该核壳结构颗粒与DMF溶解的稀土铕配合物的相互作用

得到核壳型Ag@SiO

荧光纳米复合物。结果表明

所得纳米银粒径为50 nm左右

包覆的SiO

壳层厚度约为12 nm。SiO

包覆的纳米银对两种铕配合物的荧光发射有明显的增强作用。

Abstract

Two europium complexes with terephthalic acid or phenoxyethanoic acid as the first ligand and phenanthroline as secondary ligand are synthesized. Nanometer silver sol is prepared by using reduction method

then the using the silver particles were coated with silica by improved Stöber method. By controlling the dropping time and quantity of tetraethyl orthosilicate (TEOS)

the thickness of SiO

shell was controlled. Europium complexes are dissolved with DMF and then mixed with Ag@SiO

. So we obtain the core-shell nanoparticles composite luminescent materials Ag@SiO

. Results show that the obtained nano silver core has a size of about 50 nm and thickness of the SiO

core is about 12 nm. This kinds of Ag@SiO

can significantly enhance the fluorescence emission of europium complexes.

关键词

Keywords

references

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