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Synthesis and stabilization of Au nanoparticles in colloidal solution using macroelectrolytes with sulfonic acid groups

机译：用磺酸基团胶体溶液中Au纳米粒子的合成及稳定性

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摘要

Metal nanoparticles are obtained by different chemical reactions using reducing agents that are not environmentally friendly. This work report the synthesis of Au nanoparticles in colloidal solution using three monodisperse macroelectrolytes, with peripheral sulfonic acid groups bonded covalently, without toxic reducing agents. During the synthesis of Au nanoparticles were used the new macroelectrolytes as reducing and stabilizing agents in aqueous solution or ethylene glycol. The macroelectrolytes were synthesized using hexachlorocyclotriphosphazene as core, and o- or p-aminobenzenesulfonic acid, obtaining acid macroelectrolytes with two and six sulfonic acid groups in ortho-position, and four sulfonic acid groups in para-position. The ultraviolet-visible (UV-vis) absorption spectroscopy and transmission electron microscopy study show that the macroelectrolytes with sulfonic acid groups in ortho-position are reducing agents for Au 111 ions in colloidal solution and produced Au nanoparticles with anisotropic shapes, such as decahedrons and prisms. The macroelectrolyte with sulfonic acid groups in para-position is reducing agent for Au 111 and produces quasispherical Au nanoparticles with sizes between 8 and 40 nm. The colloidal solutions with Au nanoparticles were stable by several months due to the protection of imine and sulfonic groups of macroelectrolytes on the Au nanoparticles. (C) 2017 Wiley Periodicals, Inc.
机译：金属纳米颗粒通过使用不环保的还原剂获得不同的化学反应。该工作报告使用三种单分散的宏观电解质来合成胶体溶液中的Au纳米粒子，所述亚烷磺酸基团共价键合，无毒性还原剂。在合成Au纳米颗粒期间，使用新的宏观电解物作为水溶液或乙二醇中的降低和稳定剂。使用六氯环三膦腈作为核和O-或对氨基苯磺酸合成宏观电解质，获得邻位 - 位置中的两个和六个磺酸基团的酸性宏观电极，和在对 - 位置中的四个磺酸基团。紫外 - 可见（UV-VI）吸收光谱和透射电子显微镜研究表明，邻位 - 位置的磺酸基团的宏观电解在胶体溶液中的Au 111离子中还原剂，并产生具有各向异性形状的Au纳米粒子，例如脱赤块棱镜。在对 - 位置中的磺酸基团的宏电解质是Au 111的还原剂，并在8至40nm之间产生尺寸的Quaspherical Au纳米粒子。由于在Au纳米颗粒上的亚胺和磺基团的宏观电解质的保护，具有Au纳米粒子的胶体溶液稳定了几个月。 （c）2017 Wiley期刊，Inc。

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