Journal of Colloid and Interface Science ( IF 9.4 ) Pub Date : 2018-08-23 , DOI: 10.1016/j.jcis.2018.08.065
Beibei Yu , Qian Yang , Hongyan Li , Zhenzhong Liu , Xiao Huang , Yawen Wang , Hongyu Chen
![]() |
Synthesis of asymmetric nanostructures has always been a great challenge. In particular, there are only limited approaches for growing spiral nanowires in solution, and almost all of them require templates. Here, as a step in advancing the synthetic capability at the nanoscale, we report a wet chemistry template-free approach for growing hybrids spiral gold nanowires. The spiral gold nanowires were grown from the surface of colloidal gold nanoparticles, forming hybrid Au nanostructures. As an application of the active surface growth mechanism, the mechanistic understanding enables systematic adjustment of the nanowire morphology. The length and width of the spiral nanowires could be readily adjusted. Furthermore, the number of spiral nanowire on each Au nanoparticle, could be tuned by the pre-hydrolysis of the surface modification reagent. Such versatile system allows creation of complex nanostructures like the octopus-like and spider-like Au hybrids.
中文翻译:
![](https://scdn.x-mol.com/jcss/images/paperTranslation.png)
胶体金纳米颗粒上的金纳米螺旋
不对称纳米结构的合成一直是一个巨大的挑战。特别是,只有有限的方法可以在溶液中生长螺旋纳米线,并且几乎所有方法都需要模板。在此,作为提高纳米级合成能力的步骤,我们报告了一种无需湿化学模板的方法来生长杂化螺旋金纳米线。从胶体金纳米颗粒的表面生长出螺旋金纳米线,形成混合金纳米结构。作为活性表面生长机制的一种应用,机理的理解使得能够对纳米线的形态进行系统的调节。螺旋纳米线的长度和宽度可以容易地调节。此外,可以通过表面改性剂的预水解来调节每个Au纳米颗粒上的螺旋纳米线的数量。