Thin films consisting of a fulleropyrrolidine derivative 1 and a novel water-soluble porphyrin 2 were prepared by the Langmuir-Shafer (LS, horizontal lifting) method. In particular, a solution of I in chloroform and dimethyl sulfoxide was spread on the water surface, while porphyrin 2 (bearing peripheral anionic groups) was dissolved into the aqueous subphase. To the best of our knowledge, such a versatile method of film fabrication for fullerene/porphyrin mixed composite films has never been used before. Evidence of the effective interactions between the two moieties at the air-water interface was obtained from the analysis of the floating layers by means of surface pressure versus area per molecule Langmuir curves, Brewster angle microscopy and UV-visible reflection spectroscopy. The characterisation of the LS films by UV-visible spectroscopy reveals that the two constituents behave as discrete and weakly interacting pi systems. The use of polarised light suggests the existence of a preferential direction of the macrocyclic rings with an edge-on arrangement with respect to the substrate surface. Finally, photoaction spectra were recorded from films deposited by only one horizontal lifting onto indium-tin-oxide (ITO) electrodes and the observed photocurrent increased notably with increasing transfer surface pressure.
Conoci, S., Guldi, D.M., NARDIS, S., PAOLESSE, R., Kordatos, K., Prato, M., et al. (2004). Langmuir-Shafer transfer of fullerenes and porphyrins: Formation, deposition, and application of versatile films. CHEMISTRY-A EUROPEAN JOURNAL, 10(24), 6523-6530.
|Tipologia:||Articolo su rivista|
|Citazione:||Conoci, S., Guldi, D.M., NARDIS, S., PAOLESSE, R., Kordatos, K., Prato, M., et al. (2004). Langmuir-Shafer transfer of fullerenes and porphyrins: Formation, deposition, and application of versatile films. CHEMISTRY-A EUROPEAN JOURNAL, 10(24), 6523-6530.|
|IF:||Con Impact Factor ISI|
|Settore Scientifico Disciplinare:||Settore CHIM/07 - Fondamenti Chimici delle Tecnologie|
|Revisione (peer review):||Sì, ma tipo non specificato|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1002/chem.200400520|
|Stato di pubblicazione:||Pubblicato|
|Data di pubblicazione:||2004|
|Titolo:||Langmuir-Shafer transfer of fullerenes and porphyrins: Formation, deposition, and application of versatile films|
|Autori:||Conoci, S; Guldi, DM; NARDIS, S; PAOLESSE, R; Kordatos, K; Prato, M; Ricciardi, G; Vicente, MGH; Zilbermann, I; Valli, L|
|Appare nelle tipologie:||01 - Articolo su rivista|