Micro-patterned polymer brushes by a combination of photolithography and interface-mediated RAFT polymerization for DNA hybridization

2015 ◽  
Vol 6 (38) ◽  
pp. 6812-6818 ◽  
Author(s):  
Dilek Cimen ◽  
Tuncer Caykara
Keyword(s):  
Dna Hybridization ◽  
Polymer Brushes ◽  
Raft Polymerization ◽  
Polymer Brush

A novel micro-patterned poly(AHMA) brush was prepared by a combination of photolithography and interface mediated RAFT polymerization for DNA hybridization. By this method, highly resolved micro-patterned polymer brush structures down to ∼2.0 μm lines were obtained.

scholarly journals P4VP Modified Zwitterionic Polymer for the Preparation of Antifouling Functionalized Surfaces

Nanomaterials ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 706 ◽  
Author(s):  
Chaoqun Wu ◽  
Yudan Zhou ◽  
Haitao Wang ◽  
Jianhua Hu
Keyword(s):  
Photoelectron Spectroscopy ◽  
Cell Attachment ◽  
Raft Polymerization ◽  
Polymer Brush ◽  
Contact Angles ◽  
Polymerization Process ◽  
Water Contact ◽  
Zwitterionic Polymers ◽  
Ito Glass ◽  
Zwitterionic Polymer

Zwitterionic polymers are suitable for replacing poly(ethylene glycol) (PEG) polymers because of their better antifouling properties, but zwitterionic polymers have poor mechanical properties, strong water absorption, and their homopolymers should not be used directly. To solve these problems, a reversible-addition fragmentation chain transfer (RAFT) polymerization process was used to prepare copolymers comprised of zwitterionic side chains that were attached to an ITO glass substrate using spin-casting. The presence of 4-vinylpyridine (4VP) and zwitterion chains on these polymer-coated ITO surfaces was confirmed using 1H NMR, FTIR, and GPC analyses, with successful surface functionalization confirmed using water contact angle, X-ray photoelectron spectroscopy (XPS), and atomic force microscopy (AFM) studies. Changes in water contact angles and C/O ratios (XPS) analysis demonstrated that the functionalization of these polymers with β-propiolactone resulted in hydrophilic mixed 4VP/zwitterionic polymers. Protein adsorption and cell attachment assays were used to optimize the ratio of the zwitterionic component to maximize the antifouling properties of the polymer brush surface. This work demonstrated that the antifouling surface coatings could be readily prepared using a “P4VP-modified” method, that is, the functionality of P4VP to modify the prepared zwitterionic polymer. We believe these materials are likely to be useful for the preparation of biomaterials for biosensing and diagnostic applications.

Polymer Brushes: High-Resolution, Large-Area, Serial Fabrication of 3D Polymer Brush Structures by Parallel Dip-Pen Nanodisplacement Lithography (Small 23/2012)

Small ◽  
2012 ◽  
Vol 8 (23) ◽  
pp. 3567-3567 ◽  
Author(s):  
Xuechang Zhou ◽  
Zhilu Liu ◽  
Zhuang Xie ◽  
Xuqing Liu ◽  
Zijian Zheng
Keyword(s):  
High Resolution ◽  
Polymer Brushes ◽  
Polymer Brush ◽  
Large Area

scholarly journals Theory of Lubrication due to Poly-Electrolyte Polymer Brushes

2007 ◽  
Vol 1049 ◽  
Author(s):  
Jeffrey B. Sokoloff
Keyword(s):  
Field Theory ◽  
Osmotic Pressure ◽  
Dry Friction ◽  
Polymer Brushes ◽  
Mean Field Theory ◽  
Polymer Brush ◽  
Mean Field ◽  
The Mean ◽  
Coated Surfaces

AbstractIt is shown using a method based on the mean field theory of Miklavic Marcelja that it should be possible for osmotic pressure due to the counterions associated with the two polyelectrolyte polymer brush coated surfaces to support a reasonable load (i.e., about 105 Pa) with the brushes held sufficiently far apart to prevent entanglement of polymers belonging to the two brushes, thus avoiding what is likely to be the dominant mechanisms for static and dry friction.

The structure of polymer brushes near the transition from dilute to dense systems. A computer simulation study

Soft Matter ◽  
2021 ◽  
Author(s):  
Piotr Polanowski ◽  
Andrzej Sikorski
Keyword(s):  
Computer Simulation ◽  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Simulation Study ◽  
Polymer Brushes ◽  
Polymer Brush ◽  
Coarse Grained ◽  
Computer Simulation Study ◽  
Coarse Grained Model ◽  
Cooperative Motion

Monodisperse polymer brushes were studied by means of Monte Carlo simulations. A coarse-grained model of a polymer brush was designed in order and the Cooperative Motion Algorithm was employed to...

Evolution and Applications of Polymer Brush Hypersurface Photolithography

2021 ◽  
Author(s):  
Daniel Valles ◽  
Yerzhan Zholdassov ◽  
Adam Braunschweig
Keyword(s):  
Polymer Brushes ◽  
Polymer Brush ◽  
Printing Method

Hypersurface Photolithography (HP) is a printing method for fabricating structures and patterns composed of polymer brushes, and can be used to create patterns with complex topologies or for rapidly accelerating...

scholarly journals Anionic Polymer Brushes for Biomimetic Calcium Phosphate Mineralization—A Surface with Application Potential in Biomaterials

Polymers ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 1165 ◽  
Author(s):  
Tobias Mai ◽  
Karol Wolski ◽  
Agnieszka Puciul-Malinowska ◽  
Alexey Kopyshev ◽  
Ralph Gräf ◽  
...  
Keyword(s):  
Calcium Phosphate ◽  
Polymer Brushes ◽  
Polymer Brush ◽  
Inorganic Component ◽  
Hybrid Films ◽  
Anionic Polymer ◽  
Phosphate Mineralization ◽  
Application Potential ◽  
Good Biocompatibility ◽  
Growth Experiments

This article describes the synthesis of anionic polymer brushes and their mineralization with calcium phosphate. The brushes are based on poly(3-sulfopropyl methacrylate potassium salt) providing a highly charged polymer brush surface. Homogeneous brushes with reproducible thicknesses are obtained via surface-initiated atom transfer radical polymerization. Mineralization with doubly concentrated simulated body fluid yields polymer/inorganic hybrid films containing AB-Type carbonated hydroxyapatite (CHAP), a material resembling the inorganic component of bone. Moreover, growth experiments using Dictyostelium discoideum amoebae demonstrate that the mineral-free and the mineral-containing polymer brushes have a good biocompatibility suggesting their use as biocompatible surfaces in implantology or related fields.

Preparation of Polymer Brushes by Surface-Initiated ARGET ATRP

2013 ◽  
Vol 791-793 ◽  
pp. 208-211 ◽  
Author(s):  
Xiao Meng Chu ◽  
Shao Jie Liu ◽  
Hui Jiao Yang ◽  
Feng Qing Zhao
Keyword(s):  
Molecular Weight ◽  
Silicon Dioxide ◽  
Polymer Brushes ◽  
Polymer Brush ◽  
Surface Modifications ◽  
Organic Substrate ◽  
Research Progress ◽  
Grafting Density ◽  
Arget Atrp ◽  
Inorganic Substrate

This paper firstly summarized the latest research progress on the polymer brushes preparation by surface-initiated ARGET ATRP polymerization. It mainly includes the surface modifications of inorganic substrate (silicon dioxide and carbon nanotubes), and the organic substrate (cellulose and polymer microspheres). This method needs less catalyst and operates more easily, compared to the classical ATRP. Besides, it also has good polymerization controllability, and the polymer brushes have higher grafting density and molecular weight. Therefore, surface-initiated ARGET ATRP polymerization has become an effective method for modifying the surface of materials. Then, we prepared the polymer brush supported TEMPO by the surface-initiated ARGET ATRP and characterized.

A CTA-shuttled R-group approach: a versatile synthetic tool towards well-defined functional cylindrical polymer brushes via RAFT polymerization

2017 ◽  
Vol 8 (17) ◽  
pp. 2659-2665 ◽  
Author(s):  
Yifei Wang ◽  
Zhicheng Zheng ◽  
Zhengdong Huang ◽  
Jun Ling
Keyword(s):  
Polymer Brushes ◽  
Raft Polymerization ◽  
Group Approach

We report a novel three-step strategy toward polyCTA for the synthesis of cylindrical polymer brushes via “CTA-shuttled” RAFT R-approach polymerization. Post functionalizations on the CTA residue are also discussed.

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