Dynamically Gas-Phase Switchable Super(de)wetting States by Reversible Amphiphilic Functionalization: A Powerful Approach for Smart Fluid Gating Membranes

William S.Y. Wong, Thomas Gengenbach, Hieu T. Nguyen, Xiang Gao, Vincent S.J. Craig, Antonio Tricoli*

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    16 Citations (Scopus)

    Abstract

    In nature, cellular membranes perform critical functions such as endocytosis and exocytosis through smart fluid gating processes mediated by nonspecific amphiphilic interactions. Despite considerable progress, artificial fluid gating membranes still rely on laborious stimuli-responsive mechanisms and triggering systems. In this study, a room temperature gas-phase approach is presented for dynamically switching a porous material from a superhydrophobic to a superhydrophilic wetting state and back. This is realized by the reversible attachment of bipolar amphiphiles, which promote surface wetting. Application of this reversible amphiphilic functionalization to an impermeable nanofibrous membrane induces a temporary state of superhydrophilicity resulting in its pressure-less permeation. This mechanism allows for rapid smart fluid gating processes that can be triggered at room temperature by variations in the environment of the membrane. Owing to the universal adsorption of volatile amphiphiles on surfaces, this approach is applicable to a broad range of materials and geometries enabling facile fabrication of valve-less flow systems, fluid-erasable microfluidic arrays, and sophisticated microfluidic designs.

    Original languageEnglish
    Article number1704423
    JournalAdvanced Functional Materials
    Volume28
    Issue number2
    DOIs
    Publication statusPublished - 10 Jan 2018

    Fingerprint

    Dive into the research topics of 'Dynamically Gas-Phase Switchable Super(de)wetting States by Reversible Amphiphilic Functionalization: A Powerful Approach for Smart Fluid Gating Membranes'. Together they form a unique fingerprint.

    Cite this