Jump to main content
Jump to site search

Issue 32, 2016
Previous Article Next Article

Hierarchical spatial heterogeneity in liquid crystals composed of graphene oxides

Author affiliations

Abstract

Graphene oxide (GO) is a class of two-dimensional materials with a thickness of about 1 nm and a broad distribution of lateral dimension commonly approaching several micrometers. A dispersion of GOs in water often forms a liquid crystal, which is expected to be a promising precursor for the fabrication of carbon-based materials with well-ordered structures. To accelerate the application of GO-based liquid crystals, their structures and physical properties at various sizes must be well understood. To that end, we examined the local rheological properties of GO-based liquid crystals in the nematic phase using a particle tracking technique, where local properties can be accessed by observing the thermal motion of embedded probe particles. Particle diffusion was spatially heterogeneous, and depended on the size of the particles. Such a size-dependent heterogeneity can be associated with a hierarchical local environment, which is time-dependent for this system. The anisotropic particle diffusion originated from particles trapped in between the GO layers and in isotropic-like regions. The aggregation states of the GO dispersion composed of nematic and isotropic-like regions were observed using confocal laser scanning microscopy.

Graphical abstract: Hierarchical spatial heterogeneity in liquid crystals composed of graphene oxides

Back to tab navigation

Supplementary files

Publication details

The article was received on 25 May 2016, accepted on 19 Jul 2016 and first published on 19 Jul 2016


Article type: Paper
DOI: 10.1039/C6CP03614G
Citation: Phys. Chem. Chem. Phys., 2016,18, 22399-22406
  •   Request permissions

    Hierarchical spatial heterogeneity in liquid crystals composed of graphene oxides

    A. Shundo, K. Hori, D. P. Penaloza, Y. Matsumoto, Y. Okumura, H. Kikuchi, K. E. Lee, S. O. Kim and K. Tanaka, Phys. Chem. Chem. Phys., 2016, 18, 22399
    DOI: 10.1039/C6CP03614G

Search articles by author

Spotlight

Advertisements