Use of stimuli responsive polymers grafted on mixed self-assembled monolayers to tune transitions in surface energy

A method to tune and reversibly switch surface wettability by making use of smart polymers attached to self-assembled monolayers (SAMs) that vary systematically in their composition and, thus, hydrophobicity and surface energy is presented. As such, the development of a technique for surface polymerization of PNIPAAm using SAMs containing carboxylic acid-terminated alkanethiolates on gold which are derivatized with an amine-bearing azo-initiator is reported. It is demonstrated that, by varying the ratio of the carboxylic acid- to methyl-terminated alkanethiolates in the underlying SAM, the wettability, and thus the surface energy, can be tuned in both the hydrophilic and hydrophobic states of the surface grafted polymer.

Full Text

Duke Authors

Cited Authors

  • Mendez, S; Ista, LK; López, GP

Published Date

  • 2003

Published In

Volume / Issue

  • 19 / 19

Start / End Page

  • 8115 - 8116

International Standard Serial Number (ISSN)

  • 0743-7463

Digital Object Identifier (DOI)

  • 10.1021/la034632l

Citation Source

  • SciVal