›› 2011, Vol. 11 ›› Issue (4): 711-715.
寿庆辉 郭晨 高红帅 周华从 刘春朝 刘会洲
SHOU Qing-hui GUO Chen GAO Hong-shuai ZHOU Hua-cong LIU Chun-zhao LIU Hui-zhou
摘要: Synthesis of gold nanoparticles (AuNPs) and Pluronic triblock copolymer composite in aqueous medium was studied. Gold-polymer nanocomposite with different structures was fabricated by tailoring the molar ratio of gold precursors to Pluronic P123 molecules or pH value of the P123 solution. When a lower volume ratio of [AuCl4-]/[P123] (0.05) was employed at pH 11.1, a nanostructure similar to plum pudding was obtained. AuNPs with an average diameter of 13.1 nm were embedded in Pluronic assemblies, and each one held about 21 single gold nanoparticles. When [AuCl4-]/[P123] was increased to 0.1, core-shell structure was obtained if the pH value was in the range of 10.6~11.6, while gold polyhedra were fabricated when pH value was 8.1. Typical core-shell AuNPs had an average diameter of 9.6 nm with a narrow size distribution, while gold polyhedras with a mean diameter of 12.8 nm was obtained. The specific morphologies of the resultant nanocomposite were presumably obtained due to the synergistic interaction among the reactants.
中图分类号: