Contact Angle Goniometry, Ellipsometry, XPS, and TOF-SIMS Analysis of Gold-Supported, Mixed Self-Assembled Monolayers Formed from Mixed Dialkyl Disulfides

Langmuir ◽  
1994 ◽  
Vol 10 (3) ◽  
pp. 761-766 ◽  
Author(s):  
David A. Offord ◽  
Constance M. John ◽  
John H. Griffin
Keyword(s):  
Contact Angle ◽  
Self Assembled Monolayers ◽  
Tof Sims ◽  
Assembled Monolayers ◽  
Sims Analysis ◽  
Dialkyl Disulfides ◽  
Self Assembled

Synthesis of epoxy-terminated dialkyl disulfides for polymerizable self-assembled monolayers

1998 ◽  
Vol 39 (46) ◽  
pp. 8409-8412 ◽  
Author(s):  
Laura J. Yeager ◽  
Dafni G. Amirsakis ◽  
Elan Newman ◽  
Robin L. Garrell
Keyword(s):  
Self Assembled Monolayers ◽  
Assembled Monolayers ◽  
Dialkyl Disulfides ◽  
Self Assembled

Contact Angle Analysis During the Electro-oxidation of Self-Assembled Monolayers Formed by n-Octadecyltrichlorosilane

2010 ◽  
Vol 20 (19) ◽  
pp. 3252-3259 ◽  
Author(s):  
Nicole Herzer ◽  
Jurriaan H. K. van Schaik ◽  
Stephanie Hoeppener ◽  
Ulrich S. Schubert
Keyword(s):  
Contact Angle ◽  
Self Assembled Monolayers ◽  
Assembled Monolayers ◽  
Electro Oxidation ◽  
Self Assembled ◽  
Contact Angle Analysis

Reconfigurable Hydrophobic/Hydrophilic Surfaces Based on Self-Assembled Monolayers

2003 ◽  
Vol 774 ◽  
Author(s):  
Joanne Deval ◽  
Teodoro A. Umali ◽  
Brandee L. Spencer ◽  
Esther H. Lan ◽  
Bruce Dunn ◽  
...  
Keyword(s):  
Contact Angle ◽  
Surface Water ◽  
Water Contact Angle ◽  
Self Assembled Monolayers ◽  
Ionic Surfactant ◽  
Initial Surface ◽  
Lauryl Sulfate ◽  
Water Contact ◽  
Assembled Monolayers ◽  
Self Assembled

AbstractThe fabrication of micron-scale channels and reaction chambers using micromachining techniques has created devices with large surface to volume ratios. As a result, surface properties play a major role in determining the behavior of micromachined devices. In this work, we present strategies that can be used to reconfigure surfaces from hydrophobic to hydrophilic or from hydrophilic to hydrophobic. The reversible nature of the surface is made possible by using deposition and removal of biomolecules or amphiphiles on self-assembled monolayers (SAMs). When the initial surface was hydrophobic (using a CH3-terminated SAM on the surface, water contact angle ∼100), it was rendered hydrophilic (water contact angle ≤60°) using monolayer adsorption of avidin protein. To retrieve the hydrophobicity, the avidin was subsequently removed using non-ionic surfactant octyl-β-D-glucopyranoside. Moreover, by incorporating a biotinylated poly(ethyleneglycol), the avidin-coated surface was resistant to further non-specific adsorption. If the initial surface was hydrophilic (using a CO2H-terminated SAM on the surface, water contact angle ≤20°), it was rendered hydrophobic (water contact angle >90°) using monolayer amphiphilic octadecylamine adsorption. The hydrophilicity was restored after subsequently removing the amphiphile using anionic surfactant sodium lauryl sulfate. Both types of surfaces showed excellent reversibility and demonstrated the ability to control surface wettability.

Origin of the Contact Angle Hysteresis of Water on Chemisorbed and Physisorbed Self-Assembled Monolayers

Langmuir ◽  
2012 ◽  
Vol 28 (41) ◽  
pp. 14609-14617 ◽  
Author(s):  
Nataly Belman ◽  
Kejia Jin ◽  
Yuval Golan ◽  
Jacob N. Israelachvili ◽  
Noshir S. Pesika
Keyword(s):  
Contact Angle ◽  
Contact Angle Hysteresis ◽  
Self Assembled Monolayers ◽  
Assembled Monolayers ◽  
Self Assembled

scholarly journals Use of Self-Assembled Monolayers of Different Wettabilities To Study Surface Selection and Primary Adhesion Processes of Green Algal (Enteromorpha) Zoospores

2000 ◽  
Vol 66 (8) ◽  
pp. 3249-3254 ◽  
Author(s):  
Maureen E. Callow ◽  
J. A. Callow ◽  
Linnea K. Ista ◽  
Sarah E. Coleman ◽  
Aleece C. Nolasco ◽  
...  
Keyword(s):  
Contact Angle ◽  
Photoelectron Spectroscopy ◽  
Contact Angles ◽  
Self Assembled Monolayers ◽  
Use Of Self ◽  
Oh Groups ◽  
X Ray ◽  
Green Algal ◽  
Assembled Monolayers ◽  
Self Assembled

ABSTRACT We investigated surface selection and adhesion of motile zoospores of a green, macrofouling alga (Enteromorpha) to self-assembled monolayers (SAMs) having a range of wettabilities. The SAMs were formed from alkyl thiols terminated with methyl (CH3) or hydroxyl (OH) groups or mixtures of CH3- and OH-terminated alkyl thiols and were characterized by measuring the advancing contact angles and by X-ray photoelectron spectroscopy. There was a positive correlation between the number of spores that attached to the SAMs and increasing contact angle (hydrophobicity). Moreover, the sizes of the spore groups (adjacent spores touching) were larger on the hydrophobic SAMs. Video microscopy of a patterned arrangement of SAMs showed that more zoospores were engaged in swimming and “searching” above the hydrophobic sectors than above the hydrophilic sectors, suggesting that the cells were able to “sense” that the hydrophobic surfaces were more favorable for settlement. The results are discussed in relation to the attachment of microorganisms to substrata having different wettabilities.

Quantitative analysis of the surface composition of mixed self-assembled monolayers using ToF-SIMS and FT-IR analyses

2010 ◽  
Vol 43 (1-2) ◽  
pp. 397-401 ◽  
Author(s):  
Hyegeun Min ◽  
Hyunung Yu ◽  
Miyoung Son ◽  
Dae Won Moon ◽  
Tae Geol Lee
Keyword(s):  
Quantitative Analysis ◽  
Surface Composition ◽  
Self Assembled Monolayers ◽  
Tof Sims ◽  
Assembled Monolayers ◽  
Ft Ir ◽  
Self Assembled

ToF-SIMS study on the cleaning methods of Au surface and their effects on the reproducibility of self-assembled monolayers

2008 ◽  
Vol 255 (4) ◽  
pp. 1025-1028 ◽  
Author(s):  
Hyegeun Min ◽  
Ji-Won Park ◽  
Hyun Kyong Shon ◽  
Dae Won Moon ◽  
Tae Geol Lee
Keyword(s):  
Self Assembled Monolayers ◽  
Tof Sims ◽  
Assembled Monolayers ◽  
Self Assembled ◽  
Cleaning Methods
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