有机分子隔离层对机械抛光金属银表面的罗丹明6G荧光增强效应的影响

董军; 邵红敏; 张韩; 李绪强; 郑海荣

doi:10.3788/fgxb20123303.0314

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有机分子隔离层对机械抛光金属银表面的罗丹明6G荧光增强效应的影响

器件制备及器件物理 | 更新时间：2020-08-12

- 有机分子隔离层对机械抛光金属银表面的罗丹明6G荧光增强效应的影响
- Surface Enhanced Fluorescence from Physically Polished Silver Substrate Decorated with and without Organic Molecule Layer
- 发光学报 2012年33卷第3期页码：314-317
- 作者机构：
  
  1. 西安邮电大学电子工程学院,陕西西安,710121
  2. 陕西师范大学物理学与信息技术学院,陕西西安,710062
- 作者简介：
- 基金信息：
  
  国家大学生创新性实验计划(091071809)资助项目()
- DOI：10.3788/fgxb20123303.0314
  中图分类号： O482.31
- 收稿日期：2011-12-16，
  
  修回日期：2012-01-17，
  
  网络出版日期：2012-03-10，
  
  纸质出版日期：2012-03-10
- 稿件说明：
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董军, 邵红敏, 张韩, 李绪强, 郑海荣. 有机分子隔离层对机械抛光金属银表面的罗丹明6G荧光增强效应的影响[J]. 发光学报, 2012,33(3): 314-317

DONG Jun, SHAO Hong-min, ZHANG Han, LI Xu-qiang, ZHENG Hai-rong. Surface Enhanced Fluorescence from Physically Polished Silver Substrate Decorated with and without Organic Molecule Layer[J]. Chinese Journal of Luminescence, 2012,33(3): 314-317
董军, 邵红敏, 张韩, 李绪强, 郑海荣. 有机分子隔离层对机械抛光金属银表面的罗丹明6G荧光增强效应的影响[J]. 发光学报, 2012,33(3): 314-317 DOI： 10.3788/fgxb20123303.0314.

DONG Jun, SHAO Hong-min, ZHANG Han, LI Xu-qiang, ZHENG Hai-rong. Surface Enhanced Fluorescence from Physically Polished Silver Substrate Decorated with and without Organic Molecule Layer[J]. Chinese Journal of Luminescence, 2012,33(3): 314-317 DOI： 10.3788/fgxb20123303.0314.

摘要

采用物理吸附法

在机械抛光纯银表面引入对巯基苯胺(p-Amiothiophenol

PATP)分子充当隔离层

运用激光光谱学方法研究隔离层对位于银表面附近的罗丹明6G(Rh6G)分子的荧光增强效应影响。实验结果表明

未经PATP分子修饰的机械抛光金属衬底对Rh6G分子表现为猝灭效应

而经过PATP分子修饰后的银表面对Rh6G分子的荧光发射具有增强效应。根据局域表面等离子共振及辐射能量转移模型对实验观测所得结果进行了分析研究

结果表明

PATP有机分子隔离层的引入有效地减小了荧光分子与金属衬底之间的无辐射能量速率

提高了荧光辐射强度。

Abstract

The fluorescence emission of Rhodamine 6G dye molecules located near the physically polished nanostructure silver substrate (PPNSS) with and without PATP monolayer was investigated. The quenching effect is observed when the dye molecule is directly adsorbed onto PPNSS without the formation of PATP monolayer. However

the fluorescence is enhanced when the PATP layer is formed. This phenomenon is discussed by taking into account the formation of PATP monolayer

the nonradiative energy transfer process and the local surface plasmon resonance at rough silver surface. A theoretical model is proposed for analyzing the role of the PATP layer formed on the metal substrate. It indicates that isolated spacer formed on metal nanostructure substrate can enhance fluorescence.

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references

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