Details

Autor(en) / Beteiligte

• Clair, Sylvain
• Pons, Stéphane
• Seitsonen, Ari P
• Brune, Harald
• Kern, Klaus
• Barth, Johannes V

Titel

STM Study of Terephthalic Acid Self-Assembly on Au(111):  Hydrogen-Bonded Sheets on an Inhomogeneous Substrate

Ist Teil von

• The journal of physical chemistry. B, 2004-09, Vol.108 (38), p.14585-14590

Ort / Verlag

American Chemical Society

Erscheinungsjahr

2004

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The adsorption and ordering of the molecule terephthalic acid (TPA), 1,4-benzene-dicarboxylic acid C6H4(COOH)2, on the reconstructed Au(111) surface has been studied in situ in ultrahigh vacuum by scanning tunneling microscopy (STM) at room temperature. Two-dimensional (2D) self-assembled supramolecular domains evolve, wherein the well-known one-dimensional (1D) carboxyl H-bond pairing scheme is identified. Since the individual molecules occupy a distinct adsorption site and the supramolecular ordering usually extends over several substrate reconstruction domains, a significant variation in hydrogen bond lengths is encountered, which illustrates the versatility of hydrogen bridges in molecular engineering at surfaces. Ab initio calculations for a 1D H-bonded molecular chain provide insight into the limited geometric response of the molecules in different local environments.