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采用三相界面法及置换反应法,以氯金酸-乙醇溶液和无序Ag纳米线为原材料,在空白Si基底上成功制备出有序Ag纳米线(AgNW)@Au纳米颗粒(AuNP)复合纳米线?采用场发射扫描电子显微镜(FESEM)和高分辨透射电子显微镜(HRTEM)对有序AgNW@AuNP复合纳米线形貌进行了表征与分析,研究了氯金酸-乙醇溶液浓度和置换反应的反应时间对制备AgNW@AuNP复合纳米线的影响,并且结合荧光光谱及激光拉曼光谱进一步研究了一系列有序AgNW@AuNP复合纳米线对共轭聚合物聚(3-己基噻吩)(P3HT)荧光效应的影响?实验结果表明,有序AgNW@AuNP复合纳米线上AuNP的粒径随着置换反应时间的延长或氯金酸-乙醇溶液浓度的增加而增大,并且证明该复合纳米线对P3HT的荧光效应有增强作用,但其增强效应会随置换反应进行而减弱?
AgNW @ Au nanoparticle (AuNP) nanocomposite (AuNP) was successfully prepared on a blank Si substrate by a three-phase interface method and a displacement reaction method using chloroauric acid-ethanol solution and disordered Ag nanowires as raw materials Nanowires? The orderly AgNW @ AuNP nanowires were characterized and characterized by field emission scanning electron microscopy (FESEM) and high resolution transmission electron microscopy (HRTEM). The effects of the concentration of the chloroauric acid-ethanol solution and the displacement reaction Of AgNW @ AuNP composite nanowires were investigated by fluorescence spectra and laser Raman spectroscopy. A series of ordered AgNW @ AuNP composite nanowires were further studied on the effects of reaction time on the preparation of AgNW @ AuNP nanocomposites. ) Fluorescence Effects The experimental results show that the particle size of AuNPs on ordered AgNW @ AuNP composite nanowires increases with the increase of the displacement reaction time or the concentration of chloroauric acid-ethanol solution, and it is demonstrated that the composite nanowires P3HT fluorescence enhancement effect, but its enhancement effect will be replaced with the reaction and weakened?