|Title:||Reaction of long-chain iodoalkanes with gold surfaces|
|Authors :||Hirayama, Martina|
|Published in :||Journal of Colloid and Interface Science|
|Publisher / Ed. Institution :||Science Academic Press|
|License (according to publishing contract) :||Licence according to publishing contract|
|Type of review:||Peer review (Publication)|
|Subjects :||Monolayer; Iodoalkanes; Surface reaction; Gold|
|Subject (DDC) :||540: Chemistry|
|Abstract:||Gold surfaces were treated with solutions of 1-iodododecane, 1-iodooctadecane, 1,10-diiododecane, 1-bromododecane, and 1,10-dibromodecane. Thereafter the surfaces were studied with IR spectroscopy at grazing incidence reflection, XPS, ellipsometry, and contact angle measurements. Evidence for the formation of ultrathin layers was found for the compounds containing iodine but not for those containing bromine. The results imply that the iodoalkanes dissociate on the surface, creating Au-C and Au-I bonds. As a consequence, a mixed monolayer of iodide and alkyl species is present on the surface. These layers are hydrophobic; the advancing contact angles of water on these surfaces are 82 - 93°. The surface-bound species resist desorption in pure solvent at least for 1 - 2 days.|
|Departement:||School of Engineering|
|Publication type:||Article in scientific Journal|
|Appears in Collections:||Publikationen School of Engineering|
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