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The Effect of Ligand Denticity in Size‐Selective Synthesis of Calix[ n ]arene‐Stabilized Gold Nanoparticles: A Multitechnique Approach
Author(s) -
Pescatori Luca,
Boccia Alice,
Ciesa Flavio,
Rossi Francesca,
Grillo Vincenzo,
Arduini Arturo,
Pochini Andrea,
Zai Robertino,
Secchi Andrea
Publication year - 2010
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201001039
Subject(s) - denticity , ligand (biochemistry) , calixarene , nanoparticle , chemistry , colloidal gold , materials science , crystallography , stereochemistry , combinatorial chemistry , nanotechnology , organic chemistry , receptor , molecule , crystal structure , biochemistry
Abstract A series of gold nanoparticles (AuNPs) stabilized by monodentate, bidentate, and tridentate thiolate calix[ n ]arene ligands 1 – 3 was prepared by using the Brust–Schiffrin two‐phase direct synthesis and characterized with NMR spectroscopy, elemental analysis, transmission electron microscopy (TEM), and X‐ray photoelectron spectroscopy (XPS). The experimental data show that the particular multidentate structure of calix[ n ]arene derivatives 2 and 3 introduces a control element in the preparation of the gold nanoparticles that allows, in the particular experimental conditions here reported, to obtain very small (≈1 nm) AuNPs. These are the first experimental findings that identify a role of ligand “denticity” in the determination of the nuclearity of nanoparticles.