Molecular dynamics study of mixed alkanethiols covering a gold surface at three different arrangements

V Vasumathi and M Natalia and DS Cordeiro, CHEMICAL PHYSICS LETTERS, 600, 79-86 (2014).

DOI: 10.1016/j.cplett.2014.03.064

Molecular dynamics simulations are used to study the structural properties of mixed self-assembled monolayers (SAMs) of 11-carbon alkanethiolate chains, comprising methyl-terminated and carboxylic acid- terminated tail groups, coating a planar gold surface and interfaced with water. Three different arrangements of the SAM-coated surfaces are compared, namely: random, ordered and Janus particles-type shells. Our simulation study reveals the different structural morphology of the SAM surfaces and shows how it influences their overall hydrophilicity, the hydrogen-bonding structure and the water molecules orientation. (C) 2014 Elsevier B.V. All rights reserved.

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