In:
Zeitschrift für Naturforschung B, Walter de Gruyter GmbH, Vol. 69, No. 11-12 ( 2014-12-1), p. 1164-1180
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)](BF 4 ) 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, ‘tren’; 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)](BF 4 ) 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(L2)](BF 4 ) 2 , which contains a sulphur atom in the ligand backbone, is not sufficiently stable under the same conditions.
Type of Medium:
Online Resource
ISSN:
1865-7117
,
0932-0776
DOI:
10.5560/znb.2014-4159
Language:
English
Publisher:
Walter de Gruyter GmbH
Publication Date:
2014
detail.hit.zdb_id:
2078109-X
detail.hit.zdb_id:
124635-5
Bookmarklink