Polydopamine-Assisted Fabrication of Stable Silver Nanoparticles on Optical Fiber for Enhanced Plasmonic Sensing

被引：0
作者：
Yiwen Tang
Hui Yuan
Jiangping Chen
Qiguo Xing
Rongxin Su
Wei Qi
Zhimin He
机构：
[1] Tianjin University,State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology
[2] Collaborative Innovation Center of Chemical Science and Engineering (Tianjin),undefined
来源：
Photonic Sensors | 2020年 / 10卷
关键词：
LSPR; optical fiber; polydopamine; in-situ growth; silver nanoparticles;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We present a facile and effective method for fabrication of the localized surface plasmon resonance (LSPR) optical fiber sensor assisted by two polydopamine (PDA) layers with enhanced plasmonic sensing performance. The first PDA layer was self-polymerized onto the bare optical fiber to provide the catechol groups for the reduction from Ag+ to Ago through chelating and redox activity. As the reduction of Ag+ proceeds, Ag nanoparticles (NPs) were grown in-situ on the PDA layer with uniform distribution. The second PDA layer was applied to prevent Ag NPs from oxidating and achieve an improvement of LSPR signal. The PDA/Ag/PDA-based optical fiber sensor has an enhanced LSPR sensitivity of 961 nm/RIU and excellent oxidation resistance. The stable PDA/Ag/PDA-based LSPR sensor with high optical performance is very promising for future application in optical sensing field.
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页码：97 / 104
页数：7
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