Jump to main content
Jump to site search


3D Superstructures with Orthorhombic Lattice Assembled by Colloidal PbS Quantum Dots

Abstract

We report a new type of metamaterials comprising of highly ordered 3D network of 3-7 nm lead sulfide quantum dots self-assembled in organic matrix formed by amphiphilic ligands (oleic acid molecules). Obtained 3D superstructures possess orthorhombic lattice with distance between the nanocrystals of as large as 10-40 nm. Analysis of self assembly and destruction of the superstructures in time performed by a SAXS technique shows that their morphology depends on quantity of amphiphilic ligands and width of quantum dot size and its distribution. Formation of the superstructures is discussed in terms of model describing the lyotropic crystal formation by micelles from three-phase mixtures. The results show that the organic molecules possessing the surfactant properties and capable of forming micelles with nanoparticle as a micelle core can be utilized as building blocks for creation of novel metamaterials based on highly ordered 3D network of semiconductor, metal or magnetic nanoparticles.

Back to tab navigation

Supplementary files

Publication details

The article was received on 08 Feb 2018, accepted on 10 Apr 2018 and first published on 12 Apr 2018


Article type: Paper
DOI: 10.1039/C8NR01163J
Citation: Nanoscale, 2018, Accepted Manuscript
  •   Request permissions

    3D Superstructures with Orthorhombic Lattice Assembled by Colloidal PbS Quantum Dots

    E. V. Ushakova, S. Cherevkov, A. P. Litvin, P. S. Parfenov, I. Kasatkin, A. V. Fedorov, Y. Gun'ko and A. V. Baranov, Nanoscale, 2018, Accepted Manuscript , DOI: 10.1039/C8NR01163J

Search articles by author

Spotlight

Advertisements