P16 超音波還元法を利用する金ナノ粒子の形状制御合成 : アスコルビン酸の影響(Poster Session)

概要

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Gold nanorods have received much attention, because of their excellent potential in a wide variety of applications such as sensors, surface enhanced Raman spectroscopy, optical data storage, etc. Since the size, shape and aspect ratio of the gold nanorods strongly affect the physicochemical property such as optical property of the nanorods, it is desired to develop a new synthesis method which can control the size, shape and aspect ratio of the nanorods precisely. Here, gold nanoparticles with different size, shape and aspect ratio were tried to be synthesized by 200 kHz ultrasonic irradiation to an aqueous solution containing gold ions, CTAB, AgNO_3 and ascorbic acid. It was found that the concentration of ascorbic acid additive affects the rate of gold ion reduction and the size and shape of the formed gold nanorods.
2012-11-09