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Related publications (32)

Development of functionalized alginate-based hydrogels to reduce fibrosis in the transplantation of microencapsulated cells

François Rémi Pierre Noverraz

Nowadays, the development of cell therapy relies mainly on the advances made toward cell microencapsulation which allows to evade the need for immunosuppression during cell transplantation. Among the materials considered for cell encapsulation, hydrogels d ...

EPFL2018

Cellulose Nanocrystals with Tethered Polymer Chains: Chemically Patchy versus Uniform Decoration

Harm-Anton Klok, Alke Fink, Justin Orazio Zoppe, Théo Gaston Gérard Lachat, Alix Vaimiti Marie Dupire

The site-specific surface modification of colloidal substrates, yielding "patchy" nanoparticles, is a rapidly expanding area of research as a result of the new complex structural hierarchies that are becoming accessible to chemists and materials scientists ...

2017

Surface-Initiated Controlled Radical Polymerization: State-of-the-Art, Opportunities, and Challenges in Surface and Interface Engineering with Polymer Brushes

Harm-Anton Klok, Jian Wang, Piotr Mocny, John Moraes, Justin Orazio Zoppe, Nariye Cavusoglu Ataman

The generation of polymer brushes by surface-initiated controlled radical polymerization (SI-CRP) techniques has become a powerful approach to tailor the chemical and physical properties of interfaces and has given rise to great advances in surface and int ...

2017

Mechanochemically Responsive Surfaces and Soft Tissue Adhesive Interfaces Generated via Controlled Radical Polymerization

Nariye Cavusoglu Ataman

Thin coatings applied to surfaces dramatically improve the properties of materials. Thus, they have found application in a broad variety of areas including biomedicine, nanotechnology, bioelectronics and optics, amongst others. Polymer brushes prepared via ...

EPFL2016

Functionalized Ionic (Poly)Styrenes and their Application as Catalysts in the Cycloaddition of CO2 to Epoxides

Paul Joseph Dyson, Rosario Scopelliti, Zhaofu Fei, Felix Daniel Bobbink, Shoubhik Das

Valorization of CO2, an abundant C(1) synthon, into platform chemicals is of growing interest. In this context, a key reaction is the cycloaddition of CO2 to epoxides to form carbonates (CCE). A series of organocatalysts for this reaction, based on imidazo ...

Wiley-Blackwell2016

Degrafting of Poly(poly(ethylene glycol) methacrylate) Brushes from Planar and Spherical Silicon Substrates

Harm-Anton Klok, Nariye Cavusoglu Ataman

Densely grafted, hydrophilic polymer brushes produced via surface-initiated controlled radical polymerization have been shown to undergo degrafting upon exposure to aqueous media. This degrafting process has been proposed to involve swelling-induced, mecha ...

American Chemical Society2016

Hydrophobization of silver nanoparticles through surface-initiated atom transfer radical polymerization

Heinrich Hofmann, Frank Nüesch, Jose Enrico Quijano Quinsaat

This work describes the synthesis of poly(methyl methacrylate) (PMMA)-coated Ag@SiO2 core-shell particles by conducting a Surface-Initiated Atom Transfer Radical Polymerization (SI-ATRP). Silver nanoparticles (AgNPs) were first prepared by the polyol synth ...

RSC Publishing2016

Synthesis of cyclic peptide disulfide-PHPMA conjugates via sequential active ester aminolysis and CuAAC coupling

Harm-Anton Klok

Cyclic peptide disulfides (CXC) are an important class of biomolecules. The conjugation of cyclic peptide disulfides to synthetic polymers, however, is often difficult due to the presence of the disulfide bond combined with other potentially reactive side ...

Royal Society of Chemistry2016

A Versatile Synthetic Path to Thiol Containing Polysiloxanes

A synthetic strategy to polydimethylsiloxanes and polymethylsiloxanes containing thiol functions as end- or side-groups, respectively, is presented. Such polymers are important starting materials for elastomeric networks and postpolymerization modification ...

Wiley-Blackwell2016

Surface-initiated controlled radical polymerization enhanced DNA biosensing

Harm-Anton Klok, Tugba Bilgiç Tune

The surface chemistry at the DNA recognition and binding interface plays an important role in determining the performance of DNA microarrays and DNA biosensors. Surface-initiated controlled radical polymerization (SI-CRP) reactions represent a powerful too ...

2015

Polymer Brushes - Engineered Model Interfaces and Functional Surface Coatings for DNA Biosensing and Electrocatalysis

Tugba Bilgiç Tune

Surface modification by functional coatings has become very attractive to develop and produce platforms with improved chemical and physical properties for various applications. The preparation of functional surface coatings in a well-controlled fashion pla ...

EPFL2015

Expanding the Polymer Mechanochemistry Toolbox through Surface-Initiated Polymerization

Harm-Anton Klok

Surface-initiated polymerizations represent a versatile toolbox to generate densely grafted assemblies of chain end-tethered polymers. At sufficiently short interchain distances, surface-grafted polymers are forced into an extended chain conformation, whic ...

Amer Chemical Soc2015

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