Jump to main content
Jump to site search

Issue 33, 2019
Previous Article Next Article

In situ formation of electronically coupled superlattices of Cu1.1S nanodiscs at the liquid/air interface

Author affiliations

Abstract

We report on the in situ monitoring of the formation of conductive superlattices of Cu1.1S nanodiscs via cross-linking with semiconducting cobalt 4,4′,4′′,4′′′-tetraaminophthalocyanine (CoTAPc) molecules at the liquid/air interface by real-time grazing incidence small angle X-ray scattering (GISAXS). We determine the structure, symmetry and lattice parameters of the superlattices, formed during solvent evaporation and ligand exchange on the self-assembled nanodiscs. Cu1.1S nanodiscs self-assemble into a two-dimensional hexagonal superlattice with a minor in-plane contraction (∼0.2 nm) in the lattice parameter. A continuous contraction of the superlattice has been observed during ligand exchange, preserving the initial hexagonal symmetry. We estimate a resultant decrement of about 5% in the in-plane lattice parameters. The contraction is attributed to the continuous replacement of the native oleylamine surface ligands with rigid CoTAPc. The successful cross-linking of the nanodiscs is manifested in terms of the high electrical conductivity observed in the superlattices. This finding provides a convenient platform to understand the correlation between the structure and transport of the coupled superstructures of organic and inorganic nanocrystals of anisotropic shape.

Graphical abstract: In situ formation of electronically coupled superlattices of Cu1.1S nanodiscs at the liquid/air interface

Back to tab navigation

Supplementary files

Publication details

The article was received on 04 Mar 2019, accepted on 25 Mar 2019 and first published on 25 Mar 2019


Article type: Communication
DOI: 10.1039/C9CC01758E
Citation: Chem. Commun., 2019,55, 4805-4808

  •   Request permissions

    In situ formation of electronically coupled superlattices of Cu1.1S nanodiscs at the liquid/air interface

    S. Maiti, S. Maiti, A. Maier, R. Banerjee, C. Shen, B. M. Murphy, M. Scheele and F. Schreiber, Chem. Commun., 2019, 55, 4805
    DOI: 10.1039/C9CC01758E

Search articles by author

Spotlight

Advertisements