Precise size control of hydrophobic gold nanoparticles in the 2–5 nm range

Claire Goldmann (1) , Chiara Moretti (2) , Benoit Mahler (3) , Benjamin Abécassis (4) , Marianne Impéror-Clerc (1) , Brigitte Pansu (1)

1 LPS - Laboratoire de Physique des Solides
2 PHENIX - PHysicochimie des Electrolytes et Nanosystèmes InterfaciauX
3 iLM - LUMINESCENCE - iLM - Luminescence
4 LC - Laboratoire de Chimie - UMR5182

Seeding-growth method for gold nanoparticles with a high level of size predictivity and a very low polydispersity. We report a seed-mediated synthesis strategy to control the size of gold nanoparticles at the atomic scale in the 2-5 nm size range. Starting from 2 nm seeds, a regrowth in organic solvent with a designed amount of precursor can achieve in a predictive fashion a precise mean size with a 0.3 nm resolution. We show that these monodisperse nanoparticles assemble into a 2D hexagonal lattice over a distance that can span tens of micrometers.

Mots clés: SCATTERING; FUNCTIONS; NUCLEATION; PHASE

Domaines: Chimie; Physique [physics]; Sciences de l'ingénieur [physics]

Claire Goldmann, Chiara Moretti, Benoit Mahler, Benjamin Abécassis, Marianne Impéror-Clerc, et al.. Precise size control of hydrophobic gold nanoparticles in the 2–5 nm range. Chemical Communications, 2021, 57 (93), pp.12512-12515. ⟨10.1039/d1cc05351e⟩. ⟨hal-03479910⟩