The possible use of a static magnetic field during organic molecular beam deposition of thin molecular films for inducing some preferential growth is discussed and the magnetic properties of diamagnetic molecules and molecular crystals are recalled. Considering prototypical materials, namely anthracene molecules and potassium phthalate substrates, which interact and may give rise to polycrystalline films with specific orientations, we show that in the presence of a magnetic field the films display a macroscopic preferential orientation as a result of minimization of the magnetic energy contribution. A very good agreement between the results of optical spectroscopy, atomic force microscopy, and predictions made on the basis of the anisotropic magnetic susceptibility of anthracene is found.

Sassella, A., Baldi, I., Borghesi, A., Campione, M., Miozzo, L., Moret, M., et al. (2005). Magnetically driven growth of anthracene thin films by organic molecular beam deposition. JOURNAL OF PHYSICAL CHEMISTRY. B, CONDENSED MATTER, MATERIALS, SURFACES, INTERFACES & BIOPHYSICAL, 109(11), 5150-5155 [10.1021/jp045581j].

Magnetically driven growth of anthracene thin films by organic molecular beam deposition

SASSELLA, ADELE;BORGHESI, ALESSANDRO;CAMPIONE, MARCELLO;MORET, MASSIMO;PAPAGNI, ANTONIO;TAVAZZI, SILVIA;TRABATTONI, SILVIA
2005

Abstract

The possible use of a static magnetic field during organic molecular beam deposition of thin molecular films for inducing some preferential growth is discussed and the magnetic properties of diamagnetic molecules and molecular crystals are recalled. Considering prototypical materials, namely anthracene molecules and potassium phthalate substrates, which interact and may give rise to polycrystalline films with specific orientations, we show that in the presence of a magnetic field the films display a macroscopic preferential orientation as a result of minimization of the magnetic energy contribution. A very good agreement between the results of optical spectroscopy, atomic force microscopy, and predictions made on the basis of the anisotropic magnetic susceptibility of anthracene is found.
Articolo in rivista - Articolo scientifico
Organic semiconductor, diamagnetic anisotropy, organic molecular beam epitaxy, atomic force microscopy, optical absorption
English
5150
5155
Sassella, A., Baldi, I., Borghesi, A., Campione, M., Miozzo, L., Moret, M., et al. (2005). Magnetically driven growth of anthracene thin films by organic molecular beam deposition. JOURNAL OF PHYSICAL CHEMISTRY. B, CONDENSED MATTER, MATERIALS, SURFACES, INTERFACES & BIOPHYSICAL, 109(11), 5150-5155 [10.1021/jp045581j].
Sassella, A; Baldi, I; Borghesi, A; Campione, M; Miozzo, L; Moret, M; Papagni, A; Salerno, A; Tavazzi, S; Trabattoni, S
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/7643
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