Self-assembled monolayers of radical molecules physisorbed on HOPG(0001) substrate studied by scanning tunnelling microscopy and electron paramagnetic resonance techniques

2009 ◽  
Vol 255 (21) ◽  
pp. 8769-8773 ◽  
Author(s):  
P. Krukowski ◽  
Z. Klusek ◽  
W. Olejniczak ◽  
R. Klepaczko ◽  
M. Puchalski ◽  
...  
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Scanning Tunnelling Microscopy ◽  
Self Assembled Monolayers ◽  
Paramagnetic Resonance ◽  
Scanning Tunnelling ◽  
Assembled Monolayers ◽  
Tunnelling Microscopy ◽  
Self Assembled ◽  
Electron Paramagnetic

Scanning tunnelling microscopy investigations of self-assembled monolayers of poly(3-decyl-thiophene) on graphite

1993 ◽  
Vol 2 (6) ◽  
pp. 295-299 ◽  
Author(s):  
Annalisa Bonfiglio ◽  
Rita Paradiso ◽  
Ermanno Di Zitti ◽  
Davide Ricci ◽  
Alberto Bolognesi ◽  
...  
Keyword(s):  
Scanning Tunnelling Microscopy ◽  
Self Assembled Monolayers ◽  
Scanning Tunnelling ◽  
Assembled Monolayers ◽  
Tunnelling Microscopy ◽  
Self Assembled

scholarly journals STM visualisation of counterions and the effect of charges on self-assembled monolayers of macrocycles

2011 ◽  
Vol 2 ◽  
pp. 674-680 ◽  
Author(s):  
Tibor Kudernac ◽  
Natalia Shabelina ◽  
Wael Mamdouh ◽  
Sigurd Höger ◽  
Steven De Feyter
Keyword(s):  
Self Assembly ◽  
The Self ◽  
Self Assembled Monolayers ◽  
Assembly Process ◽  
Organic Monolayers ◽  
Preferential Adsorption ◽  
Scanning Tunnelling ◽  
Assembled Monolayers ◽  
Tunnelling Microscopy ◽  
Self Assembled

Despite their importance in self-assembly processes, the influence of charged counterions on the geometry of self-assembled organic monolayers and their direct localisation within the monolayers has been given little attention. Recently, various examples of self-assembled monolayers composed of charged molecules on surfaces have been reported, but no effort has been made to prove the presence of counterions within the monolayer. Here we show that visualisation and exact localisation of counterions within self-assembled monolayers can be achieved with scanning tunnelling microscopy (STM). The presence of charges on the studied shape-persistent macrocycles is shown to have a profound effect on the self-assembly process at the liquid–solid interface. Furthermore, preferential adsorption was observed for the uncharged analogue of the macrocycle on a surface.

scholarly journals Thiocyanate Anchors for Salt-like Iron(II) Complexes on Au(111): Promises and Caveats

2014 ◽  
Vol 69 (11-12) ◽  
pp. 1164-1180 ◽  
Author(s):  
Philipp Stock ◽  
Andreas Erbe ◽  
Manfred Buck ◽  
Dennis Wiedemann ◽  
Hervé Ménard ◽  
...  
Keyword(s):  
Gold Surface ◽  
Self Assembled Monolayers ◽  
Sulphur Atom ◽  
X Ray ◽  
New Class ◽  
Scanning Tunnelling ◽  
Assembled Monolayers ◽  
Tunnelling Microscopy ◽  
Self Assembled ◽  
Ionic Iron

Abstract The formation of self-assembled monolayers (SAMs) on Au(111) from solution has been investigated for two ionic iron(II) complexes of the type [Fe(L)](BF4)2, where L is tripodal hexadentate and contains three thiocyanate anchor groups. The ligands (L1, L2; donor set: N6) are obtained by Schiff base condensation of a tripodal triamine (L1: tris-(2-aminoethyl)amine, ‘tren’; L2: 1,1′,1″- trimethyl(thiophosphoryl)trihydrazide) with 5-(4-thiocyanatobutoxy) pyridine-2-carbaldehyde. Layers of the complexes adsorbed on Au(111) from methanol solution have been characterised using scanning tunnelling microscopy (STM), infrared reflectance absorbance (IRRAS), X-ray photoelectron (XPS) and UV=Vis reflectance spectroscopies, as well as ellipsometry. Complex [Fe(L1)](BF4)2 deposits intact on a gold surface and retains its optical addressability. Elaboration of this result may provide access to a new class of self-assembled layers, employing salt-like tripodal coordination compounds with thiocyanate anchors. The second complex, [Fe(L2)](BF4)2, which contains a sulphur atom in the ligand backbone, is not sufficiently stable under the same conditions.

Probing Membrane Hydration at the Interface of Self-Assembled Peptide Amphiphiles Using Electron Paramagnetic Resonance

2018 ◽  
Vol 7 (10) ◽  
pp. 1261-1266 ◽  
Author(s):  
Ian R. Smith ◽  
Alban H. R. Charlier ◽  
Amanda M. Pritzlaff ◽  
Alexander Shishlov ◽  
Brooke Barnes ◽  
...  
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Peptide Amphiphiles ◽  
Paramagnetic Resonance ◽  
Self Assembled ◽  
Electron Paramagnetic

Highlighting functional groups in self-assembled overlayers with specific functionalized scanning tunnelling microscopy tips

2005 ◽  
Vol 16 (11) ◽  
pp. 2596-2600 ◽  
Author(s):  
Cedric Volcke ◽  
Priscilla Simonis ◽  
Paul A Thiry ◽  
Philippe Lambin ◽  
Christine Culot ◽  
...  
Keyword(s):  
Functional Groups ◽  
Scanning Tunnelling Microscopy ◽  
Scanning Tunnelling ◽  
Tunnelling Microscopy ◽  
Self Assembled
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