Journal ArticleDOI
Polymers at interfaces : Using atom transfer radical polymerization in the controlled growth of homopolymers and block copolymers from silicon surfaces in the absence of untethered sacrificial initiator
Krzysztof Matyjaszewski,Peter J. Miller,Nisha Shukla,Boonchuan Immaraporn,Andrew Gelman,Barry B. Luokala,Tiberiu Mircea Siclovan,Guido Kickelbick,Thomas Vallant,Helmuth Hoffmann,Tadeusz Pakula +10 more
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The atom transfer radical polymerization (ATRP) of styrene and acrylates from silicon wafers modified with an initiator layer composed of 2-bromoisobutyrate fragments is described in this paper.Abstract:
The atom transfer radical polymerization (ATRP) of styrene and acrylates from silicon wafers modified with an initiator layer composed of 2-bromoisobutyrate fragments is described. In the presence of the proper ratio of activating and deactivating transition-metal species, controlled radical polymerizations of styrene were observed such that the thickness of the layer consisting of chains grown from the surface increased linearly with the molecular weight of chains polymerized in solution in identical, yet separate, experiments. The layer thickness increased linearly with reaction time for ATRP of styrene and methyl acrylate due to both the extremely low initiator concentration relative to monomer and the low monomer conversion. Further evidence for control was observed by the polymerization of blocks of either methyl or tert-butyl acrylate from the polystyrene layer. Modification of the hydrophilicity of the surface layer was achieved by hydrolysis of the poly(styrene-b-tert-butyl acrylate) to poly(styre...read more
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Journal ArticleDOI
Atom Transfer Radical Polymerization (ATRP): Current Status and Future Perspectives
TL;DR: The current status and future perspectives in atom transfer radical polymerization (ATRP) are presented in this paper, with a special emphasis on mechanistic understanding of ATRP, recent synthetic and process development, and new controlled polymer architectures enabled by ATRP.
Journal ArticleDOI
Polymer Brushes via Surface-Initiated Controlled Radical Polymerization: Synthesis, Characterization, Properties, and Applications
Raphael Barbey,Laurent Lavanant,Dusko Paripovic,Nicolas Schüwer,Caroline Sugnaux,Stefano Tugulu,Harm-Anton Klok +6 more
TL;DR: This data indicates that self-Assembled Monolayers and Walled Carbon Nanotubes with high adhesion to Nitroxide-Mediated Polymerization have potential in the well-Defined Polymer Age.
Journal ArticleDOI
Polymer brushes: surface-immobilized macromolecules
Bin Zhao,William J. Brittain +1 more
TL;DR: In this article, a review of recent literature on polymer brushes with an emphasis on linear polymer brushes attached to solid substrate surfaces is presented. The following topics are included: (i) theoretical and experimental studies of homopolymer brush structure; (ii) theoretical investigations of diblock copolymer brushes; (iii) preparation of hompolymer brushes by physisorption, grafting to and grafting from methods.
Journal ArticleDOI
Design and Preparation of Porous Polymers
TL;DR: This work presents a new mesoporous composite material suitable for high-performance liquid chromatography and shows good chiral recognition ability and high uniformity in various racemates.
References
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Formation and Structure of Self-Assembled Monolayers.
TL;DR: Monolayers of alkanethiolates on gold are probably the most studied SAMs to date and offer the needed design flexibility, both at the individual molecular and at the material levels, and offer a vehicle for investigation of specific interactions at interfaces, and of the effect of increasing molecular complexity on the structure and stability of two-dimensional assemblies.
Journal ArticleDOI
Structure and reactivity of alkylsiloxane monolayers formed by reaction of alkyltrichlorosilanes on silicon substrates
TL;DR: In this article, the authors characterized the properties of ordered alkylsiloxane monolayer films and showed that they were stable in common organic solvents, water, and acid, but were destroyed by prolonged exposure to base.
Book ChapterDOI
Tethered chains in polymer microstructures
TL;DR: This review brings out the common features of seemingly widely disparate microstructures containing tethered chains, which can be reversible or irreversible and is frequently sufficiently dense that the chains are crowded.
Journal ArticleDOI
Controlled Synthesis of Polymer Brushes by “Living” Free Radical Polymerization Techniques
Marc Husseman,Eva Malmström,Molly McNamara,Mathew Mate,David Mecerreyes,Didier Benoit,James L. Hedrick,Paul Mansky,Elbert E. Huang,Thomas P. Russell,Craig J. Hawker +10 more
TL;DR: In this article, a wide variety of unique polymer brush structures can be accomplished by "living" free radical polymerization of vinyl monomers from surface-tethered alkoxyamines or from tethered α-halo esters in the presence of (PPh3)2NiBr2.
Journal ArticleDOI
Controlled/“Living” Radical Polymerization. Kinetics of the Homogeneous Atom Transfer Radical Polymerization of Styrene
TL;DR: The homogeneous atom transfer radical polymerization (ATRP) of styrene using solubilizing 4,4'dialkyl substituted 2,2'bipyridines yielded well-defined polymers with Mw/Mn ≤ 1.10 as mentioned in this paper.