The Effect of Ligand Denticity in Size‐Selective Synthesis of Calix[n]arene‐Stabilized Gold Nanoparticles: A Multitechnique Approach |
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| Authors: | Dr Luca Pescatori Alice Boccia Dr Flavio Ciesa Dr Francesca Rossi Dr Vincenzo Grillo Prof Arturo Arduini Prof Andrea Pochini Prof Robertino Zanoni Dr Andrea Secchi |
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| Institution: | 1. Dipartimento di Chimica Organica e Industriale and Unità INSTM Sez. 4 – UdR Parma, Università di Parma viale Usberti 17/a, 43124 Parma (Italy), Fax: (+39)?0521‐905472;2. Dipartimento di Chimica, Università degli Studi di Roma ‘La Sapienza' p.le Aldo Moro 5, 00185 Roma (Italy), Fax: (+39)?06490324;3. IMEM‐CNR, viale Usberti 37/A, 43124 Parma (Italy);4. Centro S3, CNR‐Istituto Nanoscienze via Campi 213/A, 41125 Modena (Italy) |
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| Abstract: | A series of gold nanoparticles (AuNPs) stabilized by monodentate, bidentate, and tridentate thiolate calixn]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 calixn]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. |
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| Keywords: | calixarenes denticity gold ligand effects nanoparticles |
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