Sökning: onr:"swepub:oai:DiVA.org:kau-2864" >
A spectroscopic stu...
A spectroscopic study of self-assembled monolayer of porphyrin-functionalized oligo(phenyleneethynylene)s on gold : the influence of the anchor moiety
-
- Watcharinyanon, Somsakul, 1978- (författare)
- Karlstads universitet,Avdelningen för fysik och elektroteknik,Materialfysik,Karlstad University
-
- Nilsson, Daniel (författare)
- Department of Chemical and Biological Engineering, Chalmers University of Technology,Chalmers tekniska högskola,Chalmers University of Technology
-
- Moons, Ellen, 1966- (författare)
- Karlstads universitet,Avdelningen för fysik och elektroteknik,Materialfysik,Karlstad University
-
visa fler...
-
- Shaporenko, Andrey (författare)
- Angewandte Physikalische Chemie, Universität Heidelberg im Neuenheimer Feld 253,Ruprecht-Karls-Universität Heidelberg,Heidelberg University
-
- Zharnikov, Michael (författare)
- Angewandte Physikalische Chemie, Universität Heidelberg im Neuenheimer Feld 253,Ruprecht-Karls-Universität Heidelberg,Heidelberg University
-
- Albinsson, Bo, 1963 (författare)
- Department of Chemical and Biological Engineering, Chalmers University of Technology,Chalmers tekniska högskola,Chalmers University of Technology
-
- Mårtensson, Jerker, 1965 (författare)
- Department of Chemical and Biological Engineering, Chalmers University of Technology,Chalmers tekniska högskola,Chalmers University of Technology
-
- Johansson, Lars S.O. 1956- (författare)
- Karlstads universitet,Avdelningen för fysik och elektroteknik,Materialfysik,Karlstad University
-
visa färre...
-
(creator_code:org_t)
- London : RSC Publishing, 2008
- 2008
- Engelska.
-
Ingår i: Physical Chemistry, Chemical Physics - PCCP. - London : RSC Publishing. - 1463-9076 .- 1463-9084. ; 10:34, s. 5264-5275
- Relaterad länk:
-
http://www.ncbi.nlm....
-
visa fler...
-
http://dx.doi.org/10...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
https://research.cha...
-
visa färre...
Abstract
Ämnesord
Stäng
- Porphyrin-functionalized oligo(phenyleneethynylene)s (OPE) are promising molecules for molecular electronics applications. Three such molecules (1-3) with the common structure P-OPE-AG (P and AG are a porphyrin and anchor group, respectively) and different anchor groups, viz. an acetyl protected thiol, -S-COCH3 (1), an acetyl protected thiol with methylene linker, -CH2-S-COCH3 (2), and a trimethylsilylethynyl group, -C(triple bond)C-Si(CH3)3 (3) have been synthesized and the corresponding self-assembled monolayers (SAMs) on Au(111) substrates have been prepared. The integrity and structural properties of these films were studied by X-ray photoelectron spectroscopy and near-edge X-ray absorption fine structure spectroscopy. The results suggest that the films formed from 1 have a high orientational order with an almost upright orientation and dense packing of the molecular constituents, i.e. represent a high quality SAM. In contrast, molecule 2 formed disordered molecular layers on Au, even though the molecule-surface bonding (thiolate) is the same as in the case of molecule 1. This suggests that the methylene linker in molecule 2 has a strong impact on the quality of the resulting film, so that a well-ordered SAM cannot be formed. The silane system, 3, is also able to bind to the gold surface but the resulting SAM has a poor quality, being significantly disordered and/or comprised of strongly inclined molecules. The above results suggest that the nature of the anchor group along with a possible linker is an important parameter which, to a high extent, predetermines the entire quality of OPE-based molecular layers
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Nyckelord
- Physics
- Fysik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas
- Av författaren/redakt...
-
Watcharinyanon, ...
-
Nilsson, Daniel
-
Moons, Ellen, 19 ...
-
Shaporenko, Andr ...
-
Zharnikov, Micha ...
-
Albinsson, Bo, 1 ...
-
visa fler...
-
Mårtensson, Jerk ...
-
Johansson, Lars ...
-
visa färre...
- Om ämnet
-
- NATURVETENSKAP
-
NATURVETENSKAP
-
och Fysik
-
- NATURVETENSKAP
-
NATURVETENSKAP
-
och Kemi
- Artiklar i publikationen
-
Physical Chemist ...
- Av lärosätet
-
Karlstads universitet
-
Chalmers tekniska högskola