TY - JOUR
T1 - Dipodal ferrocene-based adsorbate molecules for self-assembled monolayers on gold
AU - Weidner, Tobias
AU - Ballav, Nirmalya
AU - Zharnikov, Michael
AU - Priebe, Andreas
AU - Long, Nicholas J.
AU - Maurer, Jörg
AU - Winter, Rainer
AU - Rothenberger, Alexander
AU - Fenske, Dieter
AU - Rother, Dag
AU - Bruhn, Clemens
AU - Fink, Heinrich
AU - Siemeling, Ulrich
PY - 2008/5
Y1 - 2008/5
N2 - 1,1′-Difunctionalised ferrocene derivatives have been studied, which contain groups suitable for chemisorption on gold substrates, namely -NC, -PR2 as well as a range of sulfur-containing units like -NCS, -SR, and thienyl. Thin films on gold have been fabricated from solution with most of these adsorbate species. Film thickness, composition and structure were investigated primarily by X-ray photoelectron and near-edge X-ray absorption fine-structure spectroscopy. The quality of self-assembled monolayers fabricated from 1,1′-diisocyanoferrocene (1) and 1,1′- diisothiocyanatoferrocene (2) turned out to be superior to that of films based on the other adsorbate species investigated. In addition to the surface coordination behaviour of 1 towards gold substrates, relevant aspects of the molecular coordination chemistry of 1 have also been addressed, including the synthesis and characterisation of [(μ-1){Cr(CO)5}2], [Ag2(μ-1)2](NO3)2·H2O and [(μ-1)-(AuCl)2]. The crystal structure of the gold complex is governed by aurophilic interactions and can be taken as a model for the arrangement of 1 in self-assembled monolayers on gold.
AB - 1,1′-Difunctionalised ferrocene derivatives have been studied, which contain groups suitable for chemisorption on gold substrates, namely -NC, -PR2 as well as a range of sulfur-containing units like -NCS, -SR, and thienyl. Thin films on gold have been fabricated from solution with most of these adsorbate species. Film thickness, composition and structure were investigated primarily by X-ray photoelectron and near-edge X-ray absorption fine-structure spectroscopy. The quality of self-assembled monolayers fabricated from 1,1′-diisocyanoferrocene (1) and 1,1′- diisothiocyanatoferrocene (2) turned out to be superior to that of films based on the other adsorbate species investigated. In addition to the surface coordination behaviour of 1 towards gold substrates, relevant aspects of the molecular coordination chemistry of 1 have also been addressed, including the synthesis and characterisation of [(μ-1){Cr(CO)5}2], [Ag2(μ-1)2](NO3)2·H2O and [(μ-1)-(AuCl)2]. The crystal structure of the gold complex is governed by aurophilic interactions and can be taken as a model for the arrangement of 1 in self-assembled monolayers on gold.
KW - Aurophilicity
KW - Iron
KW - NEXAFS spectroscopy
KW - S ligands
KW - Thin films
UR - http://www.scopus.com/inward/record.url?scp=53549127535&partnerID=8YFLogxK
U2 - 10.1002/chem.200701936
DO - 10.1002/chem.200701936
M3 - Journal article
C2 - 18366048
AN - SCOPUS:53549127535
SN - 0947-6539
VL - 14
SP - 4346
EP - 4360
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
IS - 14
ER -