Redox nanoreactor dendrimer boxes: in situ hybrid gold nanoparticles via terthiophene and carbazole peripheral dendrimer oxidation
作者:Chatthai Kaewtong、Guoqian Jiang、Ramakrishna Ponnapati、Buncha Pulpoka、Rigoberto Advincula
DOI:10.1039/c0sm00796j
日期:——
π-Conjugated dendrimer-protected gold nanoparticles in stable colloidal form have been successfully prepared via simultaneous reduction of AuCl3 with oxidative polymerization of terthiophene (PT) and carbazole (PC) peripheral functionalized polyamidoamine (PAMAM) dendrimers. The hybrid dendrimer–metal materials were characterized by UV-vis, fluorescence, and FT-IR spectroscopy. XPS and AFM analyses were also employed. The differences in gold nanoparticle (AuNP) formation between the two PAMAM derivatives were discussed. In case of PT dendrimer, AuNPs can be stabilized in situ to form PAMAM–PPT–AuNP hybrid materials. For the PC dendrimer, the redox reaction afforded carbazole polymerization without necessarily forming AuNPs.
通过同时还原AuCl3与氧化聚合三噻吩(PT)和咔唑(PC)外围官能化的聚酰胺胺(PAMAM)树枝状聚合物,已成功制备出稳定胶体形式的π-共轭树枝状聚合物保护金纳米粒子。通过紫外-可见光、荧光和傅立叶变换红外光谱对树枝状聚合物-金属杂化材料进行了表征。还采用了XPS和AFM分析。讨论了两种PAMAM衍生物在金纳米粒子(AuNP)形成方面的差异。对于PT树枝状聚合物,AuNP可以在原位稳定形成PAMAM-PPT-AuNP杂化材料。对于PC树枝状聚合物,氧化还原反应提供了咔唑聚合,而不一定形成AuNP。