Preparation, Characterization, and Tunable Wettability of Poly(ionic liquid) Brushes via Surface-Initiated Atom Transfer Radical Polymerization

He, Xiaoyan; Yang, Wu; Pei, Xiaowei

doi:10.1021/ma702389y

Cited by 119 publications

(102 citation statements)

References 39 publications

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“…32 Moreover, it is a convenient indirect reporter for the molecular weight and polydispersity (PDI) of the surfaces grafted polymers provided there is a good correlation between the polymer growth from the surface and in solution. 33,34,35,36,37 In our case the sacrificial initiator EBiB is a α-halogen ester whereas the surface initiator is an amide. The latter have been reported to be prone to a higher termination rate in the initial phase of conventional ATRP resulting in higher PDIs and molecular weighs.…”

Section: Grafting Of Polymer From Atrp Functional Polyhipesmentioning

confidence: 95%

Protein Immobilization onto Poly(acrylic acid) Functional Macroporous PolyHIPE Obtained by Surface-Initiated ARGET ATRP

et al. 2012

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Amino-functional macroporous monoliths from polymerized high internal phase emulsion (polyHIPE) were surface modified with initiators for atom transfer radical polymerization (ATRP). The ATRP initiator groups on the polyHIPE surface were successfully used to initiate activator regeneration by electron transfer (ARGET) ATRP of (meth)acrylic monomers, such as methyl methacrylate (MMA) or tert-butyl acrylate (tBA) resulting in a dense coating of polymers on the polyHIPE surface. Addition of sacrificial initiator permitted control of the amount of polymer grafted onto the monolith surface. Subsequent removal of the tertbutyl protecting groups yielded highly functional polyHIPE-g-poly(acrylic acid). The versatility to use the high density of carboxylic acid groups for secondary reactions was demonstrated by the successful conjugation of enhanced green fluorescent protein (eGFP) and coral derived red fluorescent protein (DsRed) using EDC/sulfo-NHS chemistry, on the polymer 3D-scaffold surface. The materials and methodologies presented here are simple and robust, thus, opening new possibilities for the bioconjugation of highly porous polyHIPE for bioseparation applications.

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Section: Grafting Of Polymer From Atrp Functional Polyhipesmentioning

confidence: 95%

Protein Immobilization onto Poly(acrylic acid) Functional Macroporous PolyHIPE Obtained by Surface-Initiated ARGET ATRP

et al. 2012

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“…The bromo-containing silane, 2-bromo-2-methyl-N -[3-(triethoxysilyl)propyl]-propanamide, was prepared via a reported coupling of bromoisobutyryl bromide and 3-aminopropyltriethoxylsilane. [ 15 ] The silane was subsequently dissolved in anhydrous toluene into which preactivated silicon wafers were immersed, allowing the polysiloxane formation and giving substrate Si-Br . X-ray photoelectron spectroscopy (XPS) was utilized to confi rm the formation of the assembly.…”

mentioning

confidence: 99%

Dynamic Covalent Chemistry on Surfaces Employing Highly Reactive Cyclopentadienyl Moieties

et al. 2011

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“…Moreover, polymers with charged species such as polyelectrolytes were also used to change the surface wettability [5][6][7][8][9][10][11][12][13][14][15]. brushes could be modified with appropriate counter-ions [12][13][14][15] using poly(2-methacryl poly oxyethyl trimethylammonium chloride) (PMETAC) and poly(2-dimethylaminoethyl methacrylate chloride) (PDMAEMAC).…”

Section: Ion Exchangementioning

confidence: 99%

Switchable and Reversible Superhydrophobic Surfaces: Part Two

Taleb¹,

Darmanin²,

Guittard³

2018

Interdisciplinary Expansions in Engineering and Design With the Power of Biomimicry

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In this book chapter, most of the methods used in the literature to prepare switchable and reversible superhydrophobic surfaces are described. Inspired by Nature, it is possible to induce the Cassie-Baxter-Wenzel transition using different external stimuli such as light, temperature, pH, ion exchange, voltage, magnetic field, mechanic stress, plasma, ultrasonication, solvent, gas or guest. Such properties are extremely important for various applications but especially for controllable oil/water separation membranes, oil-absorbing materials, and water harvesting systems.Keywords: superhydrophobic, reversible, switchable, bioinspiration, biomimetism Reversible superhydrophobic surfaces: Part twoThis section provides continuation of the description of the stimuli used in the literature to induce reversible changes in surface wettability. Ion exchangeSince 2004, the researchers have shown that the presence of charged species such as quaternary ammonium groups are sensitive to ion exchange and lead to different surface wettabilities. In 2004, Choi et al. prepared self-assembled monolayers (SAM) with imidazolium groups on smooth Au and Si/SiO 2 substrates [1][2][3]. They studied the effect of a series of anions as shown in Figure 1 and In order to elaborate reversible superhydrophobic properties by ion exchange, gold micro and nanostructured substrates were performed by electroless etching process by immersing silicon substrates in aqueous solution of HAuCl 4 and HF (Figure 2). The surface was then modified by SAM using a thiol terminated by a quaternary ammonium. Then, the surface wettability could be reversely changed from superhydrophilic to superhydrophobic after [20]. Here, the presence of TSPM (sol-gel precursor) was used not only to form a polymer network via intramolecular interactions but also to anchor substrates (Figure 3). The membranes could reversely change from superhydrophobic/highly oleophobic to superhydrophilic/superoleophobic after exchanging Cl − ions by heptadecafluorooctanesulfonic acid (C 8 F 17 SO 3 − or HPS − ) ions. Moreover, the membranes were also highly efficient filter medium for removing multiple contaminants such as SO 2 form waster gas streams. A nother strategy was to deposit polyelectrolyte multilayers poly(diallyldimethylammonium chloride (PDDA) and poly(sodium 4-styrenesulfonate) (PSS) on gold micro and nanostructured substrates [21]. The authors studied the influence of the exchanged ions and the highest properties were obtained by exchanging Cl − (θ w < 5°) ions by PFO − (θ w = 164°). The authors also deposited polyelectrolyte multilayers on micro and nanostructured aluminum substrates obtained by etching in HCl and immersion in boiling water [22,23]. Using PFO − ions, the substrates were superhydrophobic and superoleophobic. When the substrates were immersed in seawater, the PFO − ions were exchanged by hydrophilic Cl − or SO 4 2− making the substrates underwater superoleophobic. Magnetic fieldEnvironment protection against oil leakage during oil tankers sinking is ...

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Preparation, Characterization, and Tunable Wettability of Poly(ionic liquid) Brushes via Surface-Initiated Atom Transfer Radical Polymerization

Cited by 119 publications

References 39 publications

Protein Immobilization onto Poly(acrylic acid) Functional Macroporous PolyHIPE Obtained by Surface-Initiated ARGET ATRP

Protein Immobilization onto Poly(acrylic acid) Functional Macroporous PolyHIPE Obtained by Surface-Initiated ARGET ATRP

Dynamic Covalent Chemistry on Surfaces Employing Highly Reactive Cyclopentadienyl Moieties

Switchable and Reversible Superhydrophobic Surfaces: Part Two

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