Breath figure templated semifluorinated block copolymers with tunable surface properties and binding capabilities

Lauri Valtola, Mikko Karesoja, Heikki Tenhu, Petri Ihalainen, Jawad Sarfraz, Jouko Peltonen, Melina Malinen, Arto Urtti, Sami Hietala

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Abstract

Patterning of functionalized polymeric surfaces enables the adjustment of their characteristics and use in novel applications. We prepared breath figure (BF) films from three semifluorinated diblock copolymers, which all are composed of a polystyrene block and a semifluorinated one to compare their surface properties. “Click” chemistry was employed to one of the polymers, containing a poly(pentafluorostyrene) block to incorporate hydrophilic sugar or carboxylic acid moieties. The structure of the polymer alters the obtained porous morphology of the films. Contact angle (CA) analyses of the BF films reveals that the surface porosity increases water CAs compared with solvent cast films, and, in the case of hydrophobic polymers, leads to significant increase in the CAs of dodecane. The hydrophobicity of the BF films is further amplified by the removal of the topmost layer which leads in some cases to superhydrophobic surfaces. BF films containing glucose units are hydrophilic exhibiting water CAs below 90°. These glycosylated porous surfaces are shown to bind lectin Con A-FITC or can be labelled with isothiocyanate marker.
Original languageUndefined/Unknown
Pages (from-to)1–9
JournalJournal of Applied Polymer Science
Volume132
Issue number1
DOIs
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

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