scholarly journals Improving the Stability and Sensing of Electrochemical Biosensors by Employing Trithiol-Anchoring Groups in a Six-Carbon Self-Assembled Monolayer

2009 ◽  
Vol 81 (3) ◽  
pp. 1095-1100 ◽  
Author(s):  
Noelle Phares ◽  
Ryan J. White ◽  
Kevin W. Plaxco
Keyword(s):  
Electrochemical Biosensors ◽  
Self Assembled Monolayer ◽  
Self Assembled ◽  
Anchoring Groups ◽  
The Stability

On the stability of silicon field effect capacitors with phosphate buffered saline electrolytic gate and self assembled monolayer gate insulator

2013 ◽  
Vol 111 ◽  
pp. 720-728 ◽  
Author(s):  
Nofar Mintz Hemed ◽  
Alexandra Inberg ◽  
Yosi Shacham-Diamand
Keyword(s):  
Field Effect ◽  
Gate Insulator ◽  
Self Assembled Monolayer ◽  
Self Assembled ◽  
The Stability ◽  
Phosphate Buffered Saline

Formation and stability of porphyrin and phthalocyanine self-assembled monolayers on ZnO surfaces

2016 ◽  
Vol 20 (08n11) ◽  
pp. 1264-1271 ◽  
Author(s):  
Hanna Hakola ◽  
Essi Sariola-Leikas ◽  
Paavo Jäntti ◽  
Thomas Mokus ◽  
Kati Stranius ◽  
...  
Keyword(s):  
Thin Films ◽  
Zno Nanorods ◽  
Self Assembled Monolayers ◽  
Layer Formation ◽  
Zno Film ◽  
Assembled Monolayers ◽  
Self Assembled ◽  
Anchoring Groups ◽  
The Stability ◽  
Phosphate Groups

Formation of self-assembled monolayers (SAMs) of three porphyrin and one phthalocyanine derivatives on thin ZnO film was studied by monitoring absorption spectra of the samples. The compounds were equipped with carboxylic or phosphate groups to bind to the surface. The SAM formation was found to be fast. The layer was formed in less than 15 min for all studied porphyrins, and 30 min was sufficient to form phthalocyanine layer. For porphyrins with different anchor groups the SAM formation was too fast to see any difference between the anchoring groups. The stability of SAMs was tested then by immersing the samples into neat solvents. Upon immersion the SAMs were gradually losing the absorbance for all the compounds with degradation trends being in line with p[Formula: see text] values of the binding groups of the same type. However, even for the weakest binding group the SAM was relatively stable after a few tens of minutes of washing, which was sufficient to remove physisorbed compounds but the SAM was essentially not destroyed. Comparison of SAMs on thin films with SAMs on ZnO nanorods and TiO2 nanoparticle films indicated the same fast layer formation but relatively weaker SAMs stability, showing 20–40% faster absorption losses during the washing.

The Stability Study of Pentacyano(4-mercaptopyridine)ruthenate(II) Self-Assembled Monolayer onto Gold Surface

2002 ◽  
Vol 14 (2) ◽  
pp. 153-157 ◽  
Author(s):  
Izaura Cirino Nogueira Diógenes ◽  
Francisco Carlos Nart ◽  
Márcia Laudelina Arruda Temperini ◽  
Ícaro de Sousa Moreira
Keyword(s):  
Gold Surface ◽  
Stability Study ◽  
Self Assembled Monolayer ◽  
Self Assembled ◽  
The Stability

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>

In pursuit of key features for constructing electrochemical biosensors – electrochemical and acid-base characteristic of self-assembled monolayers on gold

2020 ◽  
Vol 32 (4) ◽  
pp. 256-266
Author(s):  
T. Swebocki ◽  
P. Niedziałkowski ◽  
A. Cirocka ◽  
E. Szczepańska ◽  
T. Ossowski ◽  
...  
Keyword(s):  
Self Assembled Monolayers ◽  
Electrochemical Biosensors ◽  
Acid Base ◽  
Assembled Monolayers ◽  
Key Features ◽  
Self Assembled
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