Preparation of 1,3,5-trithia-2,4,6-triazapentalenyl films on gold surfaces

doi:10.1016/j.synthmet.2005.07.255

Synthetic Metals

Volume 153, Issues 1–3, 21 September 2005, Pages 457-460

https://doi.org/10.1016/j.synthmet.2005.07.255 Get rights and content

Abstract

Thin films of 1,3,5-trithia-2,4,6-triazapentalenyl (TTTA) were prepared on gold surfaces by “dry” and “wet” processes and were investigated by X-ray photoelectron spectroscopy (XPS), ultraviolet photoelectron spectroscopy (UPS), and surface plasmon resonance (SPR) spectroscopy. Vacuum deposition and self-assembly method were used as dry and wet processes, respectively. In the dry process, the S 2p XPS spectra show the formation of S single bond Au bond between TTTA molecules and gold surfaces. In addition, UPS measurements revealed that TTTA molecules are closely packed without decomposition. In the wet process, the adsorption kinetics monitored by SPR indicates that TTTA molecules are strongly bound to gold surfaces. The thickness of TTTA films from ethanol and hexane solutions was 1.3 nm and 1.8 nm, respectively, which suggests multilayer formation.

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For example, Matsuzaki et al. [7] and Takeda et al. [8] have demonstrated that the magnetic properties of TTTA can be optically controlled. However, there are few studies of the deposition of TTTA [9]. In the present study, the adsorption states and the electronic structure of TTTA on a gold surface has been investigated by X-ray photoelectron spectroscopy (XPS) and ultraviolet photoelectron spectroscopy (UPS).
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Preparation of 1,3,5-trithia-2,4,6-triazapentalenyl films on gold surfaces

Abstract

Chem. Phys. Lett.

J. Electron Spectrosc. Relat. Phenom.

Surf. Sci.

Science

Phys. Rev. B