Tunable Hydrophilic or Amphiphilic Coatings: A “Reactive Layer Stack” Approach

Frenzel, Ralf; Höhne, Susanne; Hanzelmann, Christian; Schmidt, Thomas; Winkler, René; Drechsler, Astrid; Bittrich, Eva; Eichhorn, Klaus‐Jochen; Uhlmann, Petra

doi:10.1021/am507403t

Cited by 6 publications

(4 citation statements)

References 38 publications

(74 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This calculation is prone to error if a component is present in a very small proportion or solvent residues interfere with the integration of the signals, but was carried out equally for all polymers and therefore allows comparisons to be made. The procedure established for acidolysis of PtBA layers with MSS [ 50 ] could only be transferred to acidolysis in solution to a limited extent. The reaction with copolymer S1 led to an almost completely acidolysed polymer (≈97 % from the 1 H NMR evaluation) but the product was not easy to work up.…”

Section: Resultsmentioning

confidence: 99%

Polyacrylic Acid Copolymers as Adhesion‐Adapted Model Materials for Cleaning Tests

Höhne

Böhm

Eisenrauch

et al. 2022

Macro Chemistry & Physics

Self Cite

View full text Add to dashboard Cite

For cleaning tests, which are important in many industrial processes, there are no test contaminations with which geometry‐independent homogeneous films can be produced. Polymer films can fill this gap when they are able to mimic the properties of reference contaminants. For this purpose, acrylic acid (AA) copolymers are prepared by conventional atom transfer radical copolymerization and subsequent acidolysis of the tert‐butyl acrylate (tBA) prepolymers. In this way polarity and adhesion can be adjusted by the amount of carboxy groups in the polymer. Dynamic contact angle measurements show that the advancing contact angle of acrylic acid/methyl(meth)acrylate statistical copolymer layers increase with decreasing carboxy group content. Cleaning experiments show accordingly that the amount of residual polymer of coatings made from these polymers is dependent on the absolute number of adhesive carboxy groups in the polymer. Therefore, for an adaption of the polymer layers to hydrophilic reference contaminants it is necessary to incorporate additional hydrophilic monomer components into the polymers, which lead to lower contact angles but also stronger adhesion of the layers. Hence, it is shown that the chosen polymer concept is delivering the leverages to adjust the properties of appropriate test contaminants.

show abstract

Section: Resultsmentioning

confidence: 99%

Polyacrylic Acid Copolymers as Adhesion‐Adapted Model Materials for Cleaning Tests

Höhne

Böhm

Eisenrauch

et al. 2022

Macro Chemistry & Physics

Self Cite

View full text Add to dashboard Cite

show abstract

“…The influence of the surrounding media on the wettability is mainly reflected in the sensitivity of the smart surface to the solvent [119][120][121][122] . Among the reported solvent-responsive polymers, the reason for the transition in switchable wettability is caused by the change of interfacial free energy owing to the configurational changes in polymer chains [123,124] .…”

Section: Solventmentioning

confidence: 99%

Smart Bionic Surfaces with Switchable Wettability and Applications

Fan

Liu

et al. 2021

J Bionic Eng

View full text Add to dashboard Cite

In order to satisfy the needs of different applications and more complex intelligent devices, smart control of surface wettability will be necessary and desirable, which gradually become a hot spot and focus in the field of interface wetting. Herein, we review interfacial wetting states related to switchable wettability on superwettable materials, including several classical wetting models and liquid adhesive behaviors based on the surface of natural creatures with special wettability. This review mainly focuses on the recent developments of the smart surfaces with switchable wettability and the corresponding regulatory mechanisms under external stimuli, which is mainly governed by the transformation of surface chemical composition and geometrical structures. Among that, various external stimuli such as physical stimulation (temperature, light, electric, magnetic, mechanical stress), chemical stimulation (pH, ion, solvent) and dual or multi-triggered stimulation have been sought out to realize the regulation of surface wettability. Moreover, we also summarize the applications of smart surfaces in different fields, such as oil/water separation, programmable transportation, anti-biofouling, detection and delivery, smart soft robotic etc. Furthermore, current limitations and future perspective in the development of smart wetting surfaces are also given. This review aims to offer deep insights into the recent developments and responsive mechanisms in smart biomimetic surfaces with switchable wettability under external various stimuli, so as to provide a guidance for the design of smart surfaces and expand the scope of both fundamental research and practical applications.

show abstract

“…Self-assembled monolayers (SAMs) [10][11][12][13][14][15][16] and polymer brushes 10, [17][18][19][20][21][22][23][24][25][26][27][28][29] are perhaps the most commonly used surface modification materials. They have driven many of the recent advances in biosensing and (opto)bioelectronic devices.…”

Section: Introductionmentioning

confidence: 99%

Nanopatterned Monolayers of Bioinspired, Sequence-Defined Polypeptoid Brushes for Semiconductor/Bio Interfaces

Yu,

Chang,

Loo

et al. 2023

Preprint

View full text Add to dashboard Cite

The ability to control and manipulate semiconductor/bio interfaces is key to enable biological nanofabrication pathways and new bioelectronic devices. Conventional surface functionalization strategies like self-assembled monolayers (SAMs) provide a limited level of customization for such interfaces. Polymer brushes offer a wider range of chemistries, but choices that maintain compatibility with both lithographic patterning and biological systems are limited. Here we developed a class of bioinspired, sequence-defined polymers, polypeptoids, as tailored polymer brushes for surface modification of semiconductor substrates. Polypeptoids with a terminal hydroxyl (–OH) group are designed and synthesized to enable efficient melt grafting onto the native oxide layer of Si substrates, forming ~1 nm thick monolayers. By programming monomer chemistry, the polypeptoid brush platform enables efficient and versatile surface modification in surface energy, passivation to preferential attachment of biomolecules, and specific binding of biomolecules. The polypeptoid brush monolayers are compatible with electron-beam lithographic patterning and maintain their chemical characteristics after exposure to the harsh conditions of the lithographic patterning workflow. Highly precise, well-defined chemical contrast nanopatterns consisting of two polymer brushes are designed and generated with a passivation background and active binding regions to achieve selective immobilization of biomacromolecules including DNA origami and streptavidin at length scales defined by electron-beam lithography. This surface modification strategy with bioinspired, sequence-defined polypeptoid brushes enables monomer- level control over surface properties with a large parameter space of monomer chemistry and sequence, and therefore is a highly versatile platform to precisely engineer semiconductor/bio interfaces for bioelectronics applications.

show abstract

Tunable Hydrophilic or Amphiphilic Coatings: A “Reactive Layer Stack” Approach

Cited by 6 publications

References 38 publications

Polyacrylic Acid Copolymers as Adhesion‐Adapted Model Materials for Cleaning Tests

Polyacrylic Acid Copolymers as Adhesion‐Adapted Model Materials for Cleaning Tests

Smart Bionic Surfaces with Switchable Wettability and Applications

Nanopatterned Monolayers of Bioinspired, Sequence-Defined Polypeptoid Brushes for Semiconductor/Bio Interfaces

Contact Info

Product

Resources

About