Formation and Electrochemical Characteristics of Multilayers of Au Nanoclusters Covered by Mixed Self-Assembled Monolayers of Three Kinds of Alkanethiols with Methyl, Ferrocene, or Carboxylate Terminal Group on Au(111) Surface

2001 ◽  
Vol 30 (9) ◽  
pp. 930-931 ◽  
Author(s):  
Toshihiro Kondo ◽  
Masayuki Okamura ◽  
Kohei Uosaki
Keyword(s):  
Terminal Group ◽  
Self Assembled Monolayers ◽  
Electrochemical Characteristics ◽  
Au Nanoclusters ◽  
Assembled Monolayers ◽  
Self Assembled

scholarly journals Influence of the nature of the alkanethiol terminal group on the electrochemical stability and blocking ability of self-assembled nanofilms on Au electrode

2021 ◽  
Vol 340 ◽  
pp. 01013
Author(s):  
Svetlana Ovchinnikova ◽  
Tatyana Aleksandrova
Keyword(s):  
Functional Group ◽  
Energy State ◽  
Terminal Group ◽  
Electrochemical Stability ◽  
Self Assembled Monolayers ◽  
Oh Groups ◽  
End Groups ◽  
Assembled Monolayers ◽  
Self Assembled ◽  
Terminal Functional Group

We studied the effect of the nature of the terminal group of thiols with the same chain length HS (CH2)8 – R (R: -CH3, -CH2OH, -NH2) on the electrodesorption behaviour of well-formed SAMs (the self-assembled monolayers), their stability and blocking ability using voltammetry and chronoamperometry. The nature of the terminal functional group determines the surface properties of SAM and provides the basis for subsequent interactions (for example, with peptides, proteins, DNA) in order to create sensors and bioagents. For the studied thiols, the hydrophilicity of the end groups increases in the series -CH3<< -NH2 ≤ -CH2OH; they also differ in polarity and the possibility of protonation of the amino group. For thiols with -CH3 and -CH2OH groups, an increase in the hydrophilicity of the terminal group leads to the formation of less stable and less ordered films. The replacement of carbon by nitrogen with approximately the same hydrophilicity of the groups (-CH2OH and -NH2) leads to the formation of a more stable film consisting of molecules in the same energy state, butwith poorer insulatingproperties.

Controlling Gold Atom Penetration through Alkanethiolate Self-Assembled Monolayers on Au{111} by Adjusting Terminal Group Intermolecular Interactions

2006 ◽  
Vol 128 (42) ◽  
pp. 13710-13719 ◽  
Author(s):  
Zihua Zhu ◽  
Thomas A. Daniel ◽  
Masato Maitani ◽  
Orlando M. Cabarcos ◽  
David L. Allara ◽  
...  
Keyword(s):  
Intermolecular Interactions ◽  
Gold Atom ◽  
Terminal Group ◽  
Self Assembled Monolayers ◽  
Assembled Monolayers ◽  
Self Assembled
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