Jump to main content
Jump to site search

Issue 18, 2016
Previous Article Next Article

Direct observation of nanoparticle multiple-ring pattern formation during droplet evaporation with dark-field microscopy

Author affiliations

Abstract

Controllable protocols towards nanoparticle self-assembly are important for applications of functional nanomaterials. Evaporation is a simple yet effective method to realize a gold nanoparticle ordered self-assembly, but until now, little attention has been paid to viewing the corresponding assembly process. Herein, with the help of dark-field microscopy, we in situ monitored the whole dynamic process of gold nanorod (GNR) assembly as the solvent evaporated. Differently from the previous coffee-ring effect, rod-shaped hydrophilic GNRs, within certain concentrations, spontaneously assembled into a multiple-ring pattern on a hydrophobic substrate via droplet drying. The self-assembly mechanism is consistent with a diffusion-driven kinetics, and the influencing factors, including the GNR surface modification, the colloid concentration, the surface property of the substrate, and the shape of the nanoparticles, were systematically investigated.

Graphical abstract: Direct observation of nanoparticle multiple-ring pattern formation during droplet evaporation with dark-field microscopy

Back to tab navigation

Supplementary files

Publication details

The article was received on 27 Jan 2016, accepted on 03 Apr 2016 and first published on 06 Apr 2016


Article type: Paper
DOI: 10.1039/C6CP00593D
Citation: Phys. Chem. Chem. Phys., 2016,18, 13018-13025
  •   Request permissions

    Direct observation of nanoparticle multiple-ring pattern formation during droplet evaporation with dark-field microscopy

    H. Li, H. Luo, Z. Zhang, Y. Li, B. Xiong, C. Qiao, X. Cao, T. Wang, Y. He and G. Jing, Phys. Chem. Chem. Phys., 2016, 18, 13018
    DOI: 10.1039/C6CP00593D

Search articles by author

Spotlight

Advertisements