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

作　　者：Yiwen TANG Hui YUAN Jiangping CHEN Qiguo XING Rongxin SU Wei QI Zhimin HE 

机构地区：[1]State Key Laboratory of Chemical Engineering,Tianjin Key Laboratory of Membrane Science and Desalination Technology,School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China [2]Collaborative Innovation Center of Chemical Science and Engineering(Tianjin),Tianjin 300072,China

出　　处：《Photonic Sensors》2020年第2期97-104,共8页光子传感器（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.51473115);Tianjin Municipal Science and Technology Bureau,China(Grant Nos.18YFZCSF00590 and 18YFHBZC00010);Wuqing S&T Commission(Grant Nos.WQKJ201726 and WQKJ201806).

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 Ag^(o) 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.

关 键 词：LSPR optical fiber POLYDOPAMINE in-situ growth silver nanoparticles 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]