Record number :
1000935
Title of article :
Chain length dependence of adsorption structure of COOH-terminated alkanethiol SAMs on Au(1 1 1)
Author/Authors :
Eisuke Ito، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
Pages :
4
From page :
584
To page :
587
Abstract :
We studied adsorption structures and adsorption states of COOH-terminated alkanethiols with different alkyl chain lengths in self-assembled monolayers (SAMs) by X-ray photoelectron spectroscopy (XPS), scanning tunneling microscopy (STM), and near-edge X-ray absorption finestructure (NEXAFS) spectroscopy. In the SAM of 11-mercapto-undecanoic acid on an Au(1 1 1) surface, formation of a well-ordered monolayer was confirmed from the results of the S 2p XPS and STM observation, while this was not the case in the SAM of 6-mercapto-haxanoic acid. C K-edge NEXAFS results suggested that the orientation or conformation of the alkyl chain differs between two SAMs. These results indicate that the intermolecular interaction of the alkyl chains plays an important role for the formation of a well-ordered monolayer of COOH-terminated alkanethiols on Au(1 1 1).
Keywords :
COOH-terminated alkanethiol , XPS , NEXAFS , Self-assembled monolayer , Alkanethiol , STM
Journal title :
Applied Surface Science
Journal title :
Applied Surface Science
Serial Year :
2005
Link To Document :
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