The bifunctional hybrid thioester ligands containing square planar Pt(II) centers 2,7-bis[2-(trans-acetylthio-bis-(tributylphosphine)platinumII)ethynyl]-9,9-didodecyl-9H-fluorene (1) and trans-4,4′-bis[2-(trans-acetylthio-bis-(tributylphosphine)platinumII)ethynyl]stilbene (2) have been prepared in a four-step procedure and used as stabilizing and interconnecting ligands for gold and silver nanoparticles (MNPs), formed in-situ upon deacylation of the MeCOS-Pt(II)-terminal groups. The metallic surface is linked to the Pt(II) centers of the ligands via M-S-Pt(II) bridges. The size of the AuNPs and AgNPs which aggregate into a bi-dimensional network through hybrid metal-organic bridges was controlled by careful choice of synthetic parameters. The morpho-structural features of the nanoparticles, investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and synchrotron radiation induced X-ray photoelectron spectroscopy (SR-XPS), highlighted the linkage between the nanoparticles, featuring diameters below 10 nm.
Cerra, S., Fontana, L., Rossi, E., Bassetti, M., Battocchio, C., Venditti, I., et al. (2021). Binuclear organometallic Pt(II) complexes as stabilizing ligands for gold and silver metal nanoparticles. INORGANICA CHIMICA ACTA, 516, 120170 [10.1016/j.ica.2020.120170].
Binuclear organometallic Pt(II) complexes as stabilizing ligands for gold and silver metal nanoparticles
Battocchio, Chiara;Venditti, Iole;
2021-01-01
Abstract
The bifunctional hybrid thioester ligands containing square planar Pt(II) centers 2,7-bis[2-(trans-acetylthio-bis-(tributylphosphine)platinumII)ethynyl]-9,9-didodecyl-9H-fluorene (1) and trans-4,4′-bis[2-(trans-acetylthio-bis-(tributylphosphine)platinumII)ethynyl]stilbene (2) have been prepared in a four-step procedure and used as stabilizing and interconnecting ligands for gold and silver nanoparticles (MNPs), formed in-situ upon deacylation of the MeCOS-Pt(II)-terminal groups. The metallic surface is linked to the Pt(II) centers of the ligands via M-S-Pt(II) bridges. The size of the AuNPs and AgNPs which aggregate into a bi-dimensional network through hybrid metal-organic bridges was controlled by careful choice of synthetic parameters. The morpho-structural features of the nanoparticles, investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and synchrotron radiation induced X-ray photoelectron spectroscopy (SR-XPS), highlighted the linkage between the nanoparticles, featuring diameters below 10 nm.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
