Controlling Surface Functionality through Generation of Thiol Groups in a Self-Assembled Monolayer

Langmuir ◽  
2010 ◽  
Vol 26 (20) ◽  
pp. 15895-15900 ◽  
Author(s):  
Simon Q. Lud ◽  
Stefan Neppl ◽  
Gerhard Richter ◽  
Paola Bruno ◽  
Dieter M. Gruen ◽  
...  
Keyword(s):  
Thiol Groups ◽  
Self Assembled Monolayer ◽  
Surface Functionality ◽  
Self Assembled

scholarly journals Luminescent acetylthiol derivative tripodal osmium(II) and iridium(III) complexes: Spectroscopy in solution and on surfaces

2011 ◽  
Vol 83 (4) ◽  
pp. 779-799 ◽  
Author(s):  
Srinidhi Ramachandra ◽  
Federico Polo ◽  
Fabio Edafe ◽  
Klaus C. Schuermann ◽  
Christian A. Nijhuis ◽  
...  
Keyword(s):  
Electrochemical Behavior ◽  
Metal Ion ◽  
Type Structure ◽  
Thiol Groups ◽  
Tunneling Junction ◽  
Self Assembled Monolayer ◽  
Entire Structure ◽  
Rigid Spacer ◽  
Phenanthroline Ligand ◽  
Self Assembled

Luminescent Os(II) and Ir(III) complexes containing a tripodal-type structure terminalized with three thiol derivatives are described. The tripod is introduced through derivatization, with a rigid spacer, of a phenanthroline ligand coordinated to the metal ion, and the entire structure possesses axial geometry. The geometry of the complexes combined with the three anchoring sites, the thiol groups, allows the complexes to adopt an almost perpendicular arrangement to the surfaces and the formation of a well-packed monolayer on Au substrates. The photophysical and electrochemical behavior of the complexes is studied in solution and on surfaces. Furthermore, a self-assembled monolayer (SAM) of Os(II) complexes on an ultraflat Au surface is used to fabricate a metal–molecule–metal junction with Au and In Ga eutectic as electrodes. The Os(II) SAM in the tunneling junction exhibits rectification behavior which is opposite in direction to that which we have previously shown for Ru(II) SAMs.

Self-Assembled Fluid Phase Floating Membranes with Tuneable Water Interlayers

2019 ◽  
Author(s):  
Luke Clifton ◽  
Nicoló Paracini ◽  
Arwel V. Hughes ◽  
Jeremy H. Lakey ◽  
Nina-Juliane Seinke ◽  
...  
Keyword(s):  
Fluid Phase ◽  
Interlayer Thickness ◽  
Supported Bilayers ◽  
Self Assembled Monolayer ◽  
High Coverage ◽  
Nano Technology ◽  
Surface Distance ◽  
Potential Applications ◽  
Self Assembled ◽  
Coated Surfaces

<p>We present a reliable method for the fabrication of fluid phase unsaturated bilayers which are readily self-assembled on charged self-assembled monolayer (SAM) surfaces producing high coverage floating supported bilayers where the membrane to surface distance could be controlled with nanometer precision. Vesicle fusion was used to deposit the bilayers onto anionic SAM coated surfaces. Upon assembly the bilayer to SAM solution interlayer thickness was 7-10 Å with evidence suggesting that this layer was present due to SAM hydration repulsion of the bilayer from the surface. This distance could be increased using low concentrations of salts which caused the interlayer thickness to enlarge to ~33 Å. Reducing the salt concentration resulted in a return to a shorter bilayer to surface distance. These accessible and controllable membrane models are well suited to a range of potential applications in biophysical studies, bio-sensors and Nano-technology.</p><br>

Heterometallic Co-Dy SMMs grafted on iron oxide nanoparticles

2021 ◽  
Author(s):  
Lidia Rosado Piquer ◽  
Jan Dreiser ◽  
E. Carolina Sañudo
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Self Assembled Monolayer ◽  
Self Assembled ◽  
System 1

The heterometallic 3d-4f SMM [Co4Dy(OH)2(SALOH)5(chp)4(MeCN)(H2O)2] (1) has been deposited onto iron oxide nanoparticles (NP) with an oleate self-assembled monolayer (SAM) as surfactant. The hybrid molecular-inorganic system 1-NP has been thoroughly...

scholarly journals Chirality in porous self-assembled monolayer networks at liquid/solid interfaces: induction, reversion, recognition and transfer

2021 ◽  
Author(s):  
Yoshito Tobe ◽  
Kazukuni Tahara ◽  
Steven De Feyter
Keyword(s):  
Two Dimensions ◽  
Self Assembled Monolayer ◽  
Supramolecular Chirality ◽  
Potential Applications ◽  
Self Assembled ◽  
Chirality Control

Chirality in two-dimensions (2D) has attracted increasing attention with regard to interesting fundamental aspects as well as potential applications. This article reports several aspects of supramolecular chirality control as exemplified...

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