Deposition of Ion-Conductive Membranes from Ionic Liquids via Initiated Chemical Vapor Deposition

Kräuter, Marianne; Tazreiter, Martin; Perrotta, Alberto; Coclite, Anna Maria

doi:10.1021/acs.macromol.0c01258

Cited by 9 publications

(6 citation statements)

References 44 publications

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“…It was also found that AEMs with longer pendant alkyl chains exhibited better alkaline stability because the steric and hydrophobic effects of the alkylene groups in the side chains mitigate the attack by the hydroxide ions to the ammonium groups. 19 Importantly, new approaches such as PIM-based polymers, 20 oppositely charged block copolymer mosaics, 21 and chemical vapor deposition methods 22 have found interesting applications in AEMs and other ionconductive membranes.…”

Section: Freeman Et Al Developed a New And Simple Methods To Determin...mentioning

confidence: 99%

Virtual Special Issue: Polymeric Membranes for Advanced Separations

Wang¹

2021

Macromolecules

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Metrics & MoreArticle RecommendationsM embrane technology has been playing an increasingly important role in addressing the global challenges related to water, the environment, and energy. The majority of membranes used in industry are produced by using polymers. Membranes hosting nano-sized or even angstrom-sized pathways, that are fixed or dynamic, regulate the transport of fine particulates, molecules, or ions based on the mechanism of size discrimination, electrostatic interactions, or sorption and diffusion. Advances in polymer science have helped to develop better membranes, and in turn the ever-increasing demands for highly efficacious membrane separations drive further progress in fundamental polymer science. That is, polymer science is essential to the development of polymeric membranes with high performance (Figure 1). Macromolecules has long been an important platform for publishing highly relevant and impactful studies regarding polymeric membranes. This Virtual Issue highlights some membrane studies recently published in Macromolecules, mainly focusing on membranes for ultrafiltration (UF), gas separations, and fuel cell separators.UF is enabled by membranes with sizes in the range of ∼2− 100 nm. UF membranes are typically prepared by phase Editorial pubs.acs.org/Macromolecules

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Section: Freeman Et Al Developed a New And Simple Methods To Determin...mentioning

confidence: 99%

Virtual Special Issue: Polymeric Membranes for Advanced Separations

Wang¹

2021

Macromolecules

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“…It was demonstrated that the copolymers crystallized into a bilayer structure formed by the perfluorinated pendant chains of PFDA perpendicular to the substrate surface whereas the MAA molecules formed COOH‐enriched regions among the bilayers, parallel to the substrate surface to function as ionic channels for proton conduction when the acid groups become deprotonated. In another study, free‐standing ion conductive membranes were obtained by iCVD polymerization of an ionic liquid 331 . Results revealed that the conductivity of the fabricated film was comparable to the ionic liquid at the liquid state.…”

Section: Progress In Applications Of Cvd‐based Thin Films and Membranesmentioning

confidence: 99%

Advances in surface modification and functionalization for tailoring the characteristics of thin films and membranes via chemical vapor deposition techniques

Mostafavi

Mishra

Gallucci

et al. 2023

J of Applied Polymer Sci

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Advanced materials are among the prime drivers for technological revolutions and transformation in quality of lives. Over time, several modification techniques have emerged enabling development of novel materials with extraordinary features. The present review aims to introduce various promising chemical and physical surface modification techniques instrumental for tailoring the characteristics of thin films and membranes. Meticulous discussions are provided over chemical vapor deposition (CVD) techniques evolved for addressing the demands for materials with desired functionalities. Also, essential criteria for the selection of substrates, modifying and precursor materials for an effective CVD modification are elaborated. Investigations are extended to unraveling the role of various process parameters on the quality and properties of deposition. Special attention is paid to the significance and performance of CVD‐based membranes and thin films for industrial applications ranging from desalination and water treatment to energy and environment, biomedical and life science as well as packaging. The goal has been to establish a scientific platform for a timely tracking of the prevailing trends in exploitation of CVD techniques and highlighting the unexplored opportunities. This also helps in identification of the scientific and technical gaps and setting directions for further progress in the fields of thin films and membranes.

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“…With iCVD, smart hydrogels responding to temperature, humidity, light, and pH were synthesized. − The great advantages of iCVD, compared to other vacuum-based deposition methods for organic compounds such as plasma-enhanced CVD or photoinduced CVD, are the mild process conditions resulting in a substantial retention of functional groups and a great variety of applicable substrates, such as tissue paper, pharmaceutics, optical microcavity probes, or even ionic liquids, − while on the contrary, for the monomer species, certain requirements need to be fulfilled. They need to be vaporizable and contain a vinyl (CC) bond, which will form the polymer backbone during the synthesis.…”

Section: Introductionmentioning

confidence: 99%

Glucose-Responsive Boronic Acid Hydrogel Thin Films Obtained via Initiated Chemical Vapor Deposition

Unger

Coclite

2022

Biomacromolecules

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Glucose-responsive materials are of great importance in the field of monitoring the physiological glucose level or smart insulin management. This study presents the first vacuum-based deposition of a glucose-responsive hydrogel thin film. The successful vacuum-based synthesis of a glucose-responsive hydrogel may open the door to a vast variety of new applications, where, for example, the hydrogel thin film is applied on new possible substrates. In addition, vacuumdeposited films are free of leachables (e.g., plasticizers and residual solvents). Therefore, they are, in principle, safe for in-body applications. A hydrogel made of but-3-enylboronic acid units, a boronic acid compound, was synthesized via initiated chemical vapor deposition. The thin film was characterized in terms of chemical composition, surface morphology, and swelling response toward pH and sucrose, a glucose−fructose compound. The film was stable in aqueous solutions, consisting of polymerized boronic acid and the initiator unit, and had an undulating texture appearance (rms 2.1 nm). The hydrogel was in its shrunken state at pH 4−7 and swelled by increasing the pH to 9. The pK a was 8.2 ± 0.2. The response to glucose was observed at pH 10 and resulted in thickness shrinking.

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Deposition of Ion-Conductive Membranes from Ionic Liquids via Initiated Chemical Vapor Deposition

Cited by 9 publications

References 44 publications

Virtual Special Issue: Polymeric Membranes for Advanced Separations

Virtual Special Issue: Polymeric Membranes for Advanced Separations

Advances in surface modification and functionalization for tailoring the characteristics of thin films and membranes via chemical vapor deposition techniques

Glucose-Responsive Boronic Acid Hydrogel Thin Films Obtained via Initiated Chemical Vapor Deposition

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