A common approach to generate tailored materials and nanoparticles (NPs) is the formation of molecular monolayers by chemisorption of bifunctional anchor molecules. This approach depends critically on the choice of a suitable anchor group. Recently, bifunctional catecholates, inspired by mussel-adhesive proteins (MAPs) and bacterial siderophores, have received considerable interest as anchor groups for biomedically relevant metal surfaces and nanoparticles. We report here the synthesis of new tripodal catecholates as multivalent anchor molecules for immobilization on metal surfaces and nanoparticles. The tripodal catecholates have been conjugated to various effector molecules such as PEG, a sulfobetaine and an adamantyl group. The potential of these conjugates has been demonstrated with the immobilization of tripodal catecholates on ZnO NPs. The results confirmed a high loading of tripodal PEG-catecholates on the particles and the formation of stable PEG layers in aqueous solution.
一种常见的生成定制材料和纳米颗粒的方法是通过双功能锚定分子的
化学吸附形成分子单层。这种方法在选择合适的锚定基团方面至关重要。最近,受贻贝黏附蛋白(
MAPs)和细菌
铁载体的启发,双功能邻二
酚基团作为
生物医学相关
金属表面和纳米颗粒的锚定基团,引起了相当大的兴趣。我们在这里报告了新的三脚猫邻二
酚酸盐的合成,作为多价锚定分子用于固定在
金属表面和纳米颗粒上。三脚猫邻二
酚酸盐已与各种效应分子结合,例如P
EG、磺基
甜菜碱和
金刚烷基团。这些共轭物的潜力已通过将三脚猫邻二
酚酸盐固定在ZnO纳米颗粒上得到证明。结果证实了三脚猫P
EG邻二
酚酸盐在颗粒上的高负载和稳定的P
EG层在
水溶液中的形成。