EnglishA study of the deposition of heterometallic antiferromagnetically coupled rings onto gold surfaces is reported. Twonew {Cr7Ni} rings, [NH2nPr2][Cr7NiF8(3-tpc)16] (1) (where 3-tpc ) 3-thiophenecarboxylate) and [nBuNH2CH2CH2SH][Cr7NiF8(O2CtBu)16] (2) have been made and structurally characterized. They have been deposited from the liquidphase on Au(111) and the adsorbed molecules compared by means of scanning tunneling microscopy (STM) andX-ray photoemission spectroscopy (XPS). In both cases a two-dimensional distribution of individually accessible{Cr7Ni} heterometallic rings on the gold surface has been obtained, exploiting the direct grafting of sulfur-functionalizedclusters. There is a competition between the chemisorption of the {Cr7Ni} clusters and a thiolic self-assembledmonolayer (SAM) formed by free ligands. In 2, the presence of a single sulfur ligand should force the molecule tograft with the ring axis normal to the surface. The cluster stability in the STM images and the S-2p energy positionsdemonstrate, for both functionalizations, the strength of the grafting with the gold surface.
Isolated heterometallic Cr7Ni rings grafted on Au(111) surface / V., CORRADINI; BIAGI, Roberto; DEL PENNINO, Umberto; DE RENZI, Valentina; GAMBARDELLA, Alessandro; AFFRONTE, Marco; CA, MURYN; GA, TIMCO; REP, WINPENNY. - In: INORGANIC CHEMISTRY. - ISSN 0020-1669. - STAMPA. - 46(2007), pp. 4937-4943.
| Data di pubblicazione: | 2007 |
| Titolo: | Isolated heterometallic Cr7Ni rings grafted on Au(111) surface |
| Autore/i: | V., CORRADINI; BIAGI, Roberto; DEL PENNINO, Umberto; DE RENZI, Valentina; GAMBARDELLA, Alessandro; AFFRONTE, Marco; CA, MURYN; GA, TIMCO; REP, WINPENNY |
| Autore/i UNIMORE: | |
| Rivista: | |
| Volume: | 46 |
| Pagina iniziale: | 4937 |
| Pagina finale: | 4943 |
| Codice identificativo ISI: | WOS:000246907800028 |
| Codice identificativo Scopus: | 2-s2.0-34347272285 |
| Codice identificativo Pubmed: | 17506551 |
| Citazione: | Isolated heterometallic Cr7Ni rings grafted on Au(111) surface / V., CORRADINI; BIAGI, Roberto; DEL PENNINO, Umberto; DE RENZI, Valentina; GAMBARDELLA, Alessandro; AFFRONTE, Marco; CA, MURYN; GA, TIMCO; REP, WINPENNY. - In: INORGANIC CHEMISTRY. - ISSN 0020-1669. - STAMPA. - 46(2007), pp. 4937-4943. |
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