Benvenuti nell'Anagrafe della Ricerca d'Ateneo
La valutazione delle attività di ricerca che si svolgono nelle università ha assunto un'importanza rilevante sia per l'intero sistema universitario sia all'interno di ogni singolo ateneo. Roma Tre si è quindi dotata di idonei strumenti informativi in grado di supportare al meglio le azioni di monitoraggio e di valutazione delle attività di ricerca svolte nei propri dipartimentied ha realizzato una Anagrafe della Ricerca di Ateneo.
EnglishThe influence of the transition metals on the molecular orientation and molecule-substrate interaction has been investigated by angular dependent NEXAFS spectroscopy for the recently synthesised dialkynyl bridged complexes M-2-DEBP (Cl(PBu3)(2)M-C equivalent to C-C6H4[4 C6H4-C equivalent to CM(PBu3)(2)Cl, M = Pt, Pd; DEBP = diethynyl-biphenyl, i.e. C equivalent to C-C6H4-C6H4-C equivalent to C-). Thin films of both samples have been deposited on Au/Si(111), and the angular dependent analysis of the main pi* feature deriving by the superimposition of the resonances due to benzene and acetylene carbon orbitals showed a polarisation effect for Pd-2-DEBP only. A tendency to a preferential molecular orientation at nearly 50 degrees to the surface was calculated. Furthermore, for Pd2-DEBP, the two pi* resonances already assigned to benzene and acetylene carbon atoms showed different angular effects; a likely explanation for this behaviour bear in mind the interaction between sp and sp 2 carbons of the organic DEBP moieties with Pd centres of neighbouring macromolecules, giving rise to interchain interactions then leading to an enhancement of the already assessed self-assembling properties.
BATTOCCHIO C, FRATODDI I, RUSSO MV, CARRAVETTA V, MONTI S, IUCCI G, et al. (2007). Binuclear transition-metal complexes on gold: Molecular orientation by angular dependent NEXAFS spectroscopy. SURFACE SCIENCE, 601, 3943-3947 [10.1016/j.susc.2007.04.154].
| Titolo: | Binuclear transition-metal complexes on gold: Molecular orientation by angular dependent NEXAFS spectroscopy | |
| Autori: | ||
| Data di pubblicazione: | 2007 | |
| Rivista: | ||
| Citazione: | BATTOCCHIO C, FRATODDI I, RUSSO MV, CARRAVETTA V, MONTI S, IUCCI G, et al. (2007). Binuclear transition-metal complexes on gold: Molecular orientation by angular dependent NEXAFS spectroscopy. SURFACE SCIENCE, 601, 3943-3947 [10.1016/j.susc.2007.04.154]. | |
| Abstract: | The influence of the transition metals on the molecular orientation and molecule-substrate interaction has been investigated by angular dependent NEXAFS spectroscopy for the recently synthesised dialkynyl bridged complexes M-2-DEBP (Cl(PBu3)(2)M-C equivalent to C-C6H4[4 C6H4-C equivalent to CM(PBu3)(2)Cl, M = Pt, Pd; DEBP = diethynyl-biphenyl, i.e. C equivalent to C-C6H4-C6H4-C equivalent to C-). Thin films of both samples have been deposited on Au/Si(111), and the angular dependent analysis of the main pi* feature deriving by the superimposition of the resonances due to benzene and acetylene carbon orbitals showed a polarisation effect for Pd-2-DEBP only. A tendency to a preferential molecular orientation at nearly 50 degrees to the surface was calculated. Furthermore, for Pd2-DEBP, the two pi* resonances already assigned to benzene and acetylene carbon atoms showed different angular effects; a likely explanation for this behaviour bear in mind the interaction between sp and sp 2 carbons of the organic DEBP moieties with Pd centres of neighbouring macromolecules, giving rise to interchain interactions then leading to an enhancement of the already assessed self-assembling properties. | |
| Handle: | http://hdl.handle.net/11590/147499 | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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