Contact Angle and Electrochemical Characterization of Multicomponent Thiophene-Capped Monolayers

Autor:	Joseph T. Sullivan, S. Michael Kilbey, and Joseph P. Mizzell, Katherine E. Harrison
Rok vydání:	2000
Předmět:	Oxide Analytical chemistry Surfaces and Interfaces Hexadecane Condensed Matter Physics Contact angle chemistry.chemical_compound chemistry Monolayer Electrochemistry Thiophene Surface roughness General Materials Science Wetting Cyclic voltammetry Spectroscopy
Zdroj:	Langmuir. 16:9797-9803
ISSN:	1520-5827 0743-7463
DOI:	10.1021/la000225n
Popis:	We have investigated the wetting behavior and electrochemical response of self-assembled monolayers made from ω-(3-thienyl)-alkyltrichlorosilanes and alkyltrichlorosilanes on indium−tin oxide coated glass slides. Contact angle measurements and cyclic voltammetry show that the properties of the monolayers change as the relative loading of the two components is changed by altering the concentration of the deposition solution. The water contact angles indicate that a fully loaded hydrophobic layer is formed, and both water and hexadecane contact angle measurements show that the tethered thiophenes are at the periphery of the monolayer. However, the hexadecane contact angles also imply that the surface roughness exposes the methylene groups of the monolayer chains. Cyclic voltammograms obtained from mixtures of 11-(3-thienyl)undecyltrichlorosilane and decyltrichlorosilane and mixtures of 16-(3-thienyl)hexadecyltrichlorosilane and hexadecyltrichlorosilane show that as the relative amount of thienyl-bearing cha...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0bb810316b5b57cbe5e2879b130beaa0 https://doi.org/10.1021/la000225n Zobrazit plný text záznamu