We show how the anisotropy of the (1 × 2) reconstructed Au(110) surface can be effectively used to achieve spontaneous ordered planar growth of rodlike conjugated oligomers uniaxially oriented on the substrate. The growth of the first few monolayers of α-sexithienyl (T6) films on the (1 × 2) reconstructed Au(110) surface in ultrahigh vacuum has been investigated by He atom scattering (HAS), scanning tunneling microscopy (STM), and low-energy electron diffraction (LEED). T6 molecules lie flat on the substrate forming long chains along the [110] direction of the Au rows. The interchain spacing is coverage dependent and uniaxially commensurate with the substrate along [001]. Three ordered structures with 12, 16, and 20 A periods are formed during the deposition of the first two T6 monolayers. This T6 overlayer acts as a template for the growth of at least five monolayers which are still planar and orientationally ordered.

Anisotropic ordered Planar Growth of alpha- Sexithienyl Thin Films / Stefano, Prato; Luca, Floreano; Dean, Cvetko; DE RENZI, Valentina; Alberto, Morgante; Silvio, Modesti; Biscarini, Fabio; Roberto, Zamboni; C., Taliani. - In: JOURNAL OF PHYSICAL CHEMISTRY. B, CONDENSED MATTER, MATERIALS, SURFACES, INTERFACES & BIOPHYSICAL. - ISSN 1520-6106. - STAMPA. - 103:(1999), pp. 7788-7795.

Anisotropic ordered Planar Growth of alpha- Sexithienyl Thin Films

DE RENZI, Valentina;BISCARINI, FABIO;
1999-01-01

Abstract

We show how the anisotropy of the (1 × 2) reconstructed Au(110) surface can be effectively used to achieve spontaneous ordered planar growth of rodlike conjugated oligomers uniaxially oriented on the substrate. The growth of the first few monolayers of α-sexithienyl (T6) films on the (1 × 2) reconstructed Au(110) surface in ultrahigh vacuum has been investigated by He atom scattering (HAS), scanning tunneling microscopy (STM), and low-energy electron diffraction (LEED). T6 molecules lie flat on the substrate forming long chains along the [110] direction of the Au rows. The interchain spacing is coverage dependent and uniaxially commensurate with the substrate along [001]. Three ordered structures with 12, 16, and 20 A periods are formed during the deposition of the first two T6 monolayers. This T6 overlayer acts as a template for the growth of at least five monolayers which are still planar and orientationally ordered.
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Anisotropic ordered Planar Growth of alpha- Sexithienyl Thin Films / Stefano, Prato; Luca, Floreano; Dean, Cvetko; DE RENZI, Valentina; Alberto, Morgante; Silvio, Modesti; Biscarini, Fabio; Roberto, Zamboni; C., Taliani. - In: JOURNAL OF PHYSICAL CHEMISTRY. B, CONDENSED MATTER, MATERIALS, SURFACES, INTERFACES & BIOPHYSICAL. - ISSN 1520-6106. - STAMPA. - 103:(1999), pp. 7788-7795.
Stefano, Prato; Luca, Floreano; Dean, Cvetko; DE RENZI, Valentina; Alberto, Morgante; Silvio, Modesti; Biscarini, Fabio; Roberto, Zamboni; C., Taliani
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/451414
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