C_(60)衍生物在金表面的自组装

Self-assembly of the [60]fullerene-substituted Oligopyridines on Au Surface

利用叠氮化反应和[4+2]环加成反应合成了含2, 2:6,2三联吡啶基团的C60衍生物. 研究了它在Au(111)面上的自组装,STM研究发现,可以在Au(111)面上形成较高质量的单层膜. 同时研究了它在金纳米粒子表面的自组装, 发现可以通过调节搅拌速度来获得不同粒径的金纳米粒子,搅拌速度越快金纳米粒径越小,而用超声波振荡也可获得较小粒径的金纳米粒子.

The cycloaddition reaction of azide of oligopyridine with [60]fullerene was used to synthesize a novel [60]fullerene derivatives containing oligopyridyl group, which is employed to self-assemble on the surface of Au(111). The scanning tunneling microscopy results show that the [60]fullerene derivative can form a self- assembled monolayer on the Au(111) surface spontaneously. The ligand is used to self-assemble on the surface of gold nanoparticles. Transmission electron micrographs indicated indeed the presence of spherical particles with an average radius of about 5~15 nm in the nanoparticle preparations. It is found that the more quickly stirring rate is avail to congregate and obtain monodisperse gold nanopaticle, which is less radius gold nanoparticle. The similar result is given under normal ultrasonic. It affords a approach improving control of nanoparticle size and shape.