Water-Soluble Maleimide-Modified Gold Nanoparticles (AuNPs) as a Platform for Cycloaddition Reactions
作者:Sara Ghiassian、Pierangelo Gobbo、Mark S. Workentin
DOI:10.1002/ejoc.201500685
日期:2015.8
Maleimide-terminated triethylene glycol thiolate monolayer-protected gold nanoparticles (Mal-EG4-AuNPs) with a core size of 2.5 ± 0.7 nm were prepared. Mal-EG4-AuNPs were modified in high yields via interfacial 1,3-dipolar cycloaddition and Diels–Alder reactions with a variety of nitrones and dienes, respectively. The resulting cycloadduct-modified AuNPs were characterized using 1H NMR spectroscopy and were verified
制备了具有 2.5 ± 0.7 nm 核心尺寸的马来酰亚胺封端的三甘醇硫醇单层保护的金纳米粒子 (Mal-EG4-AuNPs)。Mal-EG4-AuNPs 通过界面 1,3-偶极环加成和 Diels-Alder 反应分别与各种硝酮和二烯进行高产率修饰。所得环加合物修饰的 AuNP 使用 1 H NMR 光谱进行表征,并通过将光谱与具有相同硝酮和二烯的模型反应产物的光谱进行比较来验证。TEM 分析表明反应条件不影响金核的形状或大小,表明这是一种在环境压力和生物温度下以高产率和合理反应时间修饰水溶性小金纳米粒子的有效方法。