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Main Title: | Thiocyanate anchors for salt-like iron(II) complexes on Au(111): promises and caveats |
Author(s): | Stock, Philipp Erbe, Andreas Buck, Manfred Wiedemann, Dennis Ménard, Hervé Hörner, Gerald Grohmann, Andreas |
Type: | Article |
Language Code: | en |
Abstract: | The formation of self-assembled monolayers (SAMs) on Au(111) from solution has been investigated for two ionic iron(II) complexes of the type [Fe(L)](BF4)(2), where L is tripodal hexadentate and contains three thiocyanate anchor groups. The ligands (L1, L2; donor set: N-6) are obtained by Schiff base condensation of a tripodal triamine (L1: tris-(2-aminoethyl)amine, 'ten'; L2: 1,1',1 ''-trimethyl(thiophosphoryl)trihydrazide) with 5-(4-thiocyanatobutoxy) pyridine-2-carbaldehyde. Layers of the complexes adsorbed on Au(111) from methanol solution have been characterised using scanning tunnelling microscopy (STM), infrared reflectance absorbance (IRRAS), X-ray photoelectron (XPS) and UV/Vis reflectance spectroscopies, as well as ellipsometry. Complex [Fe(L1)](BF4)(2) deposits intact on a gold surface and retains its optical addressability. Elaboration of this result may provide access to a new class of self-assembled layers, employing salt-like tripodal coordination compounds with thiocyanate anchors. The second complex, [Fe(L-2)](BF4)(2), which contains a sulphur atom in the ligand backbone, is not sufficiently stable under the same conditions. |
URI: | http://depositonce.tu-berlin.de/handle/11303/5892 http://dx.doi.org/10.14279/depositonce-5485 |
Issue Date: | 2014 |
Date Available: | 13-Sep-2016 |
DDC Class: | 540 Chemie und zugeordnete Wissenschaften |
Subject(s): | responsive surfaces Au(111) Iron(II) nitrogen ligands magnetic properties |
Sponsor/Funder: | DFG, SFB 658, Elementarprozesse in molekularen Schaltern auf Oberflächen |
License: | http://rightsstatements.org/vocab/InC/1.0/ |
Journal Title: | Zeitschrift für Naturforschung |
Publisher: | De Gruyter |
Publisher Place: | Berlin |
Volume: | 69 |
Issue: | 9-10 |
Publisher DOI: | 10.5560/ZNB.2014-4159 |
Page Start: | 1164 |
Page End: | 1180 |
EISSN: | 1865-7117 |
ISSN: | 0932-0776 |
Appears in Collections: | FG Anorganische Chemie - Festkörper- und Materialchemie » Publications |
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