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Dendrimer for Templating the Growth of Porous Catechol-Coordinated Titanium Dioxide Frameworks: Toward Hemocompatible Nanomaterials. Nadia Katir, Nathalie Marcotte, Sylwia Michlewska, Maksim Ionov, Nabil El Brahmi, Mosto Bousmina, Jean Pierre Majoral, Maria Bryszewska, Abdelkrim El Kadib.Thiol-Reactive Polymers for Titanium Interfaces: Fabrication of Antimicrobial Coatings. Tugce Nihal Gevrek, Kai Yu, Jayachandran N.Brushes, Graft Copolymers, or Bottlebrushes? The Effect of Polymer Architecture on the Nanotribological Properties of Grafted-from Assemblies. Bioinert and Lubricious Surfaces by Macromolecular Design. Dendron Brushes in Polymer Medium: Interpenetration and Depletion. Enhanced Adhesion Effect of Epoxy Resin on Metal Surfaces Using Polymer with Catechol and Epoxy Groups. Yucheng Zhang, Koichi Hasegawa, Sota Kamo, Kiyoka Takagi, Wei Ma, Atsushi Takahara.Functional Nanoassemblies of Cyclic Polymers Show Amplified Responsiveness and Enhanced Protein-Binding Ability. Lucca Trachsel, Matteo Romio, Benjamin Grob, Marcy Zenobi-Wong, Nicholas D.Topology and Molecular Architecture of Polyelectrolytes Determine Their pH-Responsiveness When Assembled on Surfaces. Molecularly Smooth and Conformal Nanocoating by Amine-Mediated Redox Modulation of Catechol. Hyunhong Kim, Hyeonjung Kim, Su Hwan Kim, Jong Mok Park, Yu Jin Jung, Sang Kyu Kwak, Jongnam Park.Theory of Microphase Segregation in ABA Triblock Comb-Shaped Copolymers: Lamellar Mesophase. Journal of the American Chemical Society 2021, 143 Dispersity within Brushes Plays a Major Role in Determining Their Interfacial Properties: The Case of Oligoxazoline-Based Graft Polymers. Ramakrishna, Francesca Niccolai, Elisa Guazzelli, Cristina Paradisi, Elisa Martinelli, Nicholas D. Matteo Romio, Benjamin Grob, Lucca Trachsel, Andrea Mattarei, Giulia Morgese, Shivaprakash N.Robust, Reusable, and Antioxidative Supramolecular Adhesive to Inorganic Surfaces Based on Water-Stimulated Hydrogen Bonding. Huie Zhu, Ali Demirci, Yida Liu, Jin Gong, Masaya Mitsuishi.Mapping out the Aqueous Surface Chemistry of Metal Oxide Nanocrystals: Carboxylate, Phosphonate, and Catecholate Ligands. Loren Deblock, Eline Goossens, Rohan Pokratath, Klaartje De Buysser, Jonathan De Roo.Versatile Coating Platform for Metal Oxide Nanoparticles: Applications to Materials and Biological Science. Theory of Mesophases of Triblock Comb-Shaped Copolymers: Effects of Dead Zones and Bridging. This article is cited by 165 publications. Although associated with higher synthesis costs, dendritic macromolecules are considered to be an attractive alternative to linear polymers for surface (bio)functionalization in view of their spontaneous formation of ultrathin, confluent, and nonfouling monolayers at room temperature and their outstanding ability to present functional ligands (coupled to the termini of the dendritic structure) at high surface densities.

Despite these differences, both types of polymer architectures at saturation coverage proved to be highly resistant toward protein adsorption.

Interestingly, in terms of mechanistic aspects of “nonfouling” surface properties, the dendron films were found to be much stiffer and considerably less hydrated in comparison to the linear PEG brush surface, closer in their physicochemical properties to oligo(ethylene glycol) alkanethiol self-assembled monolayers than to conventional brush surfaces. This is attributed to the comparatively smaller and more confined molecular volume of the dendritic macromolecules in solution, the improved presentation of the catechol anchor, and/or their much lower cloud-point in the chosen buffer (close to room temperature). The results of the adsorption study, performed in a high ionic strength (“cloud-point”) buffer at room temperature, demonstrate that the adsorption kinetics increase with increasing number of catechol binding moieties and exceed the values found for the linear PEG analogue. The expected compositions of the macromolecular films were verified by X-ray photoelectron spectroscopy (XPS). The adsorption kinetics as well as resulting surface coverages were monitored by ex situ spectroscopic ellipsometry (VASE), in situ optical waveguide lightmode spectroscopy (OWLS), and quartz crystal microbalance with dissipation (QCM-D) investigations. The results were compared to those of a linear poly(ethylene glycol) (PEG) analogue with the same molecular weight.

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This work covers the synthesis of second-generation, ethylene glycol dendrons covalently linked to a surface anchor that contains two, three, or four catechol groups, the molecular assembly in aqueous buffer on titanium oxide surfaces, and the evaluation of the resistance of the monomolecular adlayers against nonspecific protein adsorption in contact with full blood serum.

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