Design and fabrication of a new fluorescence enhancement system of silver nanoparticles-decorated aligned silver nanowires  

作　　者：Jian-Chao Wang Hong-Sheng Luo Ming-Hai Zhang Xi-Hong Zu Jie Zhang Yu-Xin Gu Guo-Bin Yi 

机构地区：[1]School of Chemical Engineering and Light Industry,Guangdong University of Technology,Guangzhou 510006,China [2]Guangdong Provincial Key Laboratory of Advanced Coatings Research and Development,China National Electric Apparatus Research Institute Co.,Ltd.,Guangzhou 510300,China

出　　处：《Rare Metals》2019年第12期1178-1186,共9页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (No.51273048);Science and Technology Planning Project of Guangdong Province (No.2017B090915004);the Open Operation of Guangdong Provincial Key Laboratory of Advanced Coatings Research and Development (No.2017B030314105)

摘　　要：A new substrate,aligned Ag nanowires decorated with silver nanoparticle composite structure(AgNWs@AgNPs),was fabricated to investigate metalenhanced fluorescence(MEF) and its mechanism.The new composite structure was fabricated via a three-phase interface assembly method followed by SnCl2 sensitization and AgNO3 reduction process.The size and distribution of the nanoparticles on silver nanowires increased with the sensitization and reduction cycles.The formation of AgNPs on the surfaces of AgNWs was confirmed by multiple characterization methods including scanning electron microscopy(SEM),transmission electron microscope(TEM),atomic force microscopy(AFM) and X-ray diffraction(XRD).The results show that the fluorescence intensity of the poly(3-hexylthiophene)(P3HT) on the composite structure was greatly enhanced compared with that on bare glass substrate,and the intensity increased with the increase in particle sizes and density.The mechanism was basedo n the increase in excitation rate and the radiation decay rate.The new type of substrate could serve as a good and efficient MEF substrate for high-performance fluorescence-based devices.A new substrate,aligned Ag nanowires decorated with silver nanoparticle composite structure（AgNWs@AgNPs）,was fabricated to investigate metalenhanced fluorescence（MEF） and its mechanism.The new composite structure was fabricated via a three-phase interface assembly method followed by SnCl2 sensitization and AgNO3 reduction process.The size and distribution of the nanoparticles on silver nanowires increased with the sensitization and reduction cycles.The formation of AgNPs on the surfaces of AgNWs was confirmed by multiple characterization methods including scanning electron microscopy（SEM）,transmission electron microscope（TEM）,atomic force microscopy（AFM） and X-ray diffraction（XRD）.The results show that the fluorescence intensity of the poly（3-hexylthiophene）（P3HT） on the composite structure was greatly enhanced compared with that on bare glass substrate,and the intensity increased with the increase in particle sizes and density.The mechanism was basedo n the increase in excitation rate and the radiation decay rate.The new type of substrate could serve as a good and efficient MEF substrate for high-performance fluorescence-based devices.

关 键 词：Fluorescence enhancement Aligned Ag nanowires SELF-ASSEMBLY MECHANISM 

分 类 号：TB383.1[一般工业技术—材料科学与工程] O614.122[理学—无机化学]