Wang Jue, Liang Junfeng
Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, NJ 07030, USA.
Biomimetics (Basel). 2024 Feb 28;9(3):146. doi: 10.3390/biomimetics9030146.
Gold nanoparticles (AuNPs) have been widely investigated as surface modifiers; nevertheless, most methods still require the pretreatment of surfaces and several steps to control coating efficiency and patterns for improved functionality. We developed functionalized AuNPs through borate-protected dopamine (B-AuNPs). The simple activation of B-AuNPs with a strong acid to remove the protected borate groups produces adhesive dopamine AuNPs (D-AuNPs). D-AuNP-coated surfaces with varied but controlled features and properties such as coating density and surface pattern were achieved using D-AuNPs with a precisely controlled dopamine density and coating conditions. Such adhesive and easily manipulated AuNPs provide a facile and time-saving technology to achieve sophisticated surface coatings using AuNPs.
金纳米颗粒（AuNPs）作为表面改性剂已得到广泛研究；然而，大多数方法仍需要对表面进行预处理以及多个步骤来控制涂层效率和图案以提高功能。我们通过硼酸盐保护的多巴胺（B-AuNPs）开发了功能化的金纳米颗粒。用强酸简单激活B-AuNPs以去除受保护的硼酸盐基团，可产生粘性多巴胺金纳米颗粒（D-AuNPs）。使用具有精确控制的多巴胺密度和涂层条件的D-AuNPs，可实现具有不同但可控特征和性质（如涂层密度和表面图案）的D-AuNP涂层表面。这种粘性且易于操作的金纳米颗粒提供了一种简便且省时的技术，可利用金纳米颗粒实现复杂的表面涂层。
