Self-assembled-monolayer formation of long alkanedithiols in molecular junctions.

Self-assembled-monolayer formation of long alkanedithiols in molecular junctions. Research Abstract Details 

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Self-assembled-monolayer formation of long alkanedithiols in molecular junctions. Abstract Text:

Hylke B Akkerman,Auke J Kronemeijer,Paul A van Hal,Dago M de Leeuw,Paul W M Blom,Bert de Boer,

The orientation of alkanedithiol molecules in self-assembled monolayers (SAMs) is of vital importance for their transport properties in molecular junctions. It is demonstrated that a too-low concentration of long alkanedithiols in ethanol leads to the formation of looped molecules, resulting in a 50-fold increase of the current through the SAM. X-ray photoelectron spectroscopy measurements show that high-concentration dithiol solutions result in a preferential standing-up phase. To obtain an almost full standing-up phase of 1,14-tetradecanedithiol (C14) a 30 mM concentration in ethanol is required, whereas a 0.3 mM concentration leads to a highly looped monolayer. The conduction through the full standing-up phase of C14 and C16 is in accordance with the exponential dependence on molecule length as obtained from shorter alkanedithiols.

Self-assembled-monolayer formation of long alkanedithiols in molecular junctions. Publishing Authors By Initials

HB Akkerman,AJ Kronemeijer,PA van Hal,DM de Leeuw,PW Blom,B de Boer,

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Self-assembled-monolayer formation of long alkanedithiols in molecular junctions. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Small (Weinheim an der Bergstrasse, Germany)

VOLUME: 4

Page Numbers: 100-4

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ISSN: 1613-6829

DAY: 17

MONTH: Jan

YEAR: 2008

Self-assembled-monolayer formation of long alkanedithiols in molecular junctions. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Self-assembled-monolayer formation of long alkanedithiols in molecular junctions.

AFFILIATION: Molecular Electronics, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, NL-9747AG Groningen, The Netherlands.

Country: Germany

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