Ionic-Liquid-Infused Nanostructures as Repellent Surfaces

Galvan Y, Phillips KR, Haumann M, Wasserscheid P, Zarraga R, Vogel N (2018)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2018

Journal

Langmuir American Chemical Society

Publisher: AMER CHEMICAL SOC

Book Volume: 34

Pages Range: 6894-6902

Journal Issue: 23

DOI: 10.1021/acs.langmuir.7b03993

Abstract

In order to prepare lubricant-infused repellent coatings on silica nanostructures using low vapor pressure ionic liquids as lubricants, we study the wetting behavior of a set of imidazolium-based ionic liquids with different alkyl side chains as a function of the applied surface functionalities. We take advantage of the structural color of inverse opals prepared from a colloidal coassembly technique to study the infiltration of ionic liquids into these nanoporous structures. We find that the more hydrophobic ionic liquids with butyl and hexyl side chains can completely infiltrate inverse opals functionalized with mixed self-assembled monolayers composed of imidazole groups and aliphatic hydrocarbon chains, which we introduce via silane chemistry. These molecular species reflect the chemical nature of the ionic liquid, thereby increasing the affinity between the liquid and solid surface. The mixed surface chemistry provides sufficiently small contact angles with the ionic liquid to infiltrate the nanopores while maximizing the contact angle with water. As a result, the mixed monolayers enable the design of a stable ionic liquid/solid interface that is able to repel water as a test liquid. Our results underline the importance of matching chemical affinities to predict and control the wetting behavior in complex, multiphase systems

Authors with CRIS profile

Marco Haumann Lehrstuhl für Chemische Reaktionstechnik (CRT) Peter Wasserscheid Lehrstuhl für Chemische Reaktionstechnik (CRT) Nicolas Vogel Professur für Partikelsynthese

Involved external institutions

Massachusetts Institute of Technology (MIT) US United States (USA) (US) Universidad de Guanajuato (UG) MX Mexico (MX)

How to cite

APA:

Galvan, Y., Phillips, K.R., Haumann, M., Wasserscheid, P., Zarraga, R., & Vogel, N. (2018). Ionic-Liquid-Infused Nanostructures as Repellent Surfaces. Langmuir, 34(23), 6894-6902. https://doi.org/10.1021/acs.langmuir.7b03993

MLA:

Galvan, Yaraset, et al. "Ionic-Liquid-Infused Nanostructures as Repellent Surfaces." Langmuir 34.23 (2018): 6894-6902.

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