Growth and Self-Assembly of Ultrathin Au Nanowires into Expanded Hexagonal Superlattice Studied by in Situ SAXS

Anais Loubat (1, 2) , M. Impéror-Clerc (3) , B. Pansu (3) , F. Meneau (4) , Bertrand Raquet (2) , G. Viau (1) , Lise-Marie Lacroix (1)

1 LPCNO - Laboratoire de physique et chimie des nano-objets
2 LNCMI-T - Laboratoire national des champs magnétiques intenses - Toulouse
3 LPS - Laboratoire de Physique des Solides
4 Beamline SWING

We report the self-assembly of gold nanowires into hexagonal superlattices in liquid phase followed by in situ small-angle X-ray scattering and give new insights into their growth mechanism. The unprecedented large interwire distance of 8 nm strongly suggests the stabilization of the ultrathin gold nanowires by a ligand’s double layer composed of oleylamine and oleylammonium chloride. The one-dimensional growth is discussed, opening perspectives toward the control growth and self-assemblies of metallic nanowires.

Domaines: Matériaux

Anais Loubat, M. Impéror-Clerc, B. Pansu, F. Meneau, Bertrand Raquet, et al.. Growth and Self-Assembly of Ultrathin Au Nanowires into Expanded Hexagonal Superlattice Studied by in Situ SAXS. Langmuir, 2014, 30 (14), pp.4005-4012. ⟨10.1021/la500549z⟩. ⟨hal-01048663⟩