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金纳米粒子具有特征的表面等离子共振效应,能吸收和散射特定波长范围的光,有很高的应用价值.作为一种各向异性的金纳米粒子,棒状金纳米粒子的优点在于其等离子共振带的峰位置随粒子的形貌变化而改变,波长可控.目前,液相种子法是制备金纳米棒的最有效方法,但终产物的形貌仍然受到各种物理、化学因素的影响,如溶液浓度、还原剂种类、卤素离子、生长温度、种子用量、p H等,因此制备条件的优化及其生长规律的探究始终是金纳米棒研究的热点.同时,为更精确地控制金纳米棒的形貌,人们还试图对既有粒子做后期修整.本文将对近十多年来金纳米棒形貌控制及其原理方面的研究进行总结分析.
Gold nanoparticles have the characteristics of surface plasmon resonance, which can absorb and scatter light in a specific wavelength range, which has a high value of application.As an anisotropic gold nanoparticles, rod-shaped gold nanoparticles has the advantage of its plasmon resonance band Of the peak position changes with the particle morphology changes, the wavelength controllable.At present, the liquid seed method is the most effective method for the preparation of gold nanorods, but the final product morphology is still subject to a variety of physical and chemical factors, such as The optimization of the preparation conditions and the exploration of its growth law have always been the hot spots in the research of gold nanorods.At the same time, in order to control the gold nanorods more accurately, People are also trying to post-trim the existing particles.This paper will summarize the research on the control and principle of gold nanorods morphology in recent ten years.