Department of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 1 Oryong-dong, Buk-gu, Gwangju 500-712, South Korea.
Chem Asian J. 2010 Dec 3;5(12):2468-76. doi: 10.1002/asia.201000338.
A simple, green, one-pot synthesis of gold nanoparticles was achieved through the reaction of an aqueous mixture of potassium tetrachloroaurate(III) and the macrocycle cucurbit[7]uril in the presence of sodium hydroxide at room temperature without introducing any kind of traditional reducing agents and/or external energy. The as-prepared gold nanoparticles showed catalytic activity for the reduction reaction of 4-nitrophenol in the presence of NaBH(4), which has been established by visual inspection and UV/Vis spectroscopy. This report is the first for the preparation of gold nanoparticles using cucurbit[7]uril in aqueous media through chemical reduction without employing conventional reducing agents and/or external energy.
通过在室温下，在氢氧化钠的存在下，将氯金酸三钾和大环瓜环的水溶液混合，无需引入任何传统的还原剂和/或外部能量，实现了金纳米粒子的简单、绿色、一锅合成。所制备的金纳米粒子在硼氢化钠存在下对 4-硝基苯酚的还原反应具有催化活性，这已经通过目视检查和紫外/可见光谱得到证实。这是首次在水相介质中通过化学还原法，无需使用常规还原剂和/或外部能量，使用瓜环制备金纳米粒子。
