Novel hybrid polymer brushes with alternating dendritic wedges and linear side chains

Novel hybrid polymer brushes with alternating dendritic wedge and linear chain as side chains were reported in this paper. Firstly, dendronized polymer initiators of generation one to three, GnMIBr (n=1, 2, 3), were synthesized through the alternating copolymerization of styryl dendrons and maleimide derivative initiated by AIBN. The linear side chains were then generated through grafting-from approach using ATRP of tBA initiated with the above-mentioned macroinitiators. By combining such macromonomers and grafting-from approach, a new kind of polymer brushes with alternating dendron and linear chain as side chains, GnMI-g-PtBA, were thus synthesized and characterized with 'H NMR, SEC, AFM, etc. Morphology studies made by AFM indicate the polymer brushes display a uniform worm-like structure with a very long contour length. After the hydrolysis of PtBA branches under acidic conditions, amphiphilic dendronized polymer brushes with hydrophilic linear PAA side chains and hydrophobic dendritic side chains of three generations have been prepared.

[1]  A. Müller,et al.  Cylindrical polymer brushes , 2005 .

[2]  Yanhong Zhang,et al.  Reactive Dendronized Copolymer of Styryl Dendron and Maleic Anhydride: A Single Molecular Scaffold , 2005 .

[3]  Todd Emrick,et al.  PEG- and peptide-grafted aliphatic polyesters by click chemistry. , 2005, Journal of the American Chemical Society.

[4]  Holger Frauenrath,et al.  Dendronized polymers—building a new bridge from molecules to nanoscopic objects , 2005 .

[5]  K. Matyjaszewski,et al.  Initiation efficiency in the synthesis of molecular brushes by Grafting from via atom transfer radical polymerization , 2005 .

[6]  K. Matyjaszewski,et al.  How dense are cylindrical brushes grafted from a multifunctional macroinitiator , 2004 .

[7]  C. Hawker,et al.  Dendronized linear polymers via "click chemistry". , 2004, Journal of the American Chemical Society.

[8]  Afang Zhang,et al.  A covalent-chemistry approach to giant macromolecules and their wetting behavior on solid substrates. , 2004, Angewandte Chemie.

[9]  A. Müller,et al.  Superparamagnetic Hybrid Nanocylinders , 2004 .

[10]  Yongming Chen,et al.  Preparation of novel macromonomers and study of their polymerization , 2004 .

[11]  K. Ishizu,et al.  Architecture and solution properties of AB-type brush-block-brush amphiphilic copolymers via ATRP techniques. , 2004, Journal of colloid and interface science.

[12]  K. Matyjaszewski,et al.  Tadpole Conformation of Gradient Polymer Brushes , 2004 .

[13]  A. Müller,et al.  Template-Controlled Synthesis of Wire-Like Cadmium Sulfide Nanoparticle Assemblies within Core−Shell Cylindrical Polymer Brushes , 2004 .

[14]  Yongming Chen,et al.  A Novel Way To Synthesize Star Polymers in One Pot by ATRP of N-[2-(2-Bromoisobutyryloxy)ethyl]maleimide and Styrene , 2004 .

[15]  Manfred Schmidt,et al.  Efficient synthesis of high molar mass, first- to fourth-generation distributed dendronized polymers by the macromonomer approach. , 2003, Chemistry.

[16]  Axel H. E. Müller,et al.  New polymeric architectures with (meth)acrylic acid segments , 2003 .

[17]  A. Schlüter,et al.  Synthesis of amphiphilic poly (para-phenylene)s by Suzuki polycondensation , 2003 .

[18]  A. Müller,et al.  Amphiphilic cylindrical brushes with poly(acrylic acid) core and poly(n-butyl acrylate) shell and narrow length distribution , 2003 .

[19]  Zhishan Bo,et al.  Dendronized Polymers: Recent Progress in Synthesis , 2003 .

[20]  K. Matyjaszewski,et al.  Synthesis and Visualization of Densely Grafted Molecular Brushes with Crystallizable Poly(octadecyl methacrylate) Block Segments , 2003 .

[21]  Manfred Schmidt,et al.  Shape Changes of Statistical Copolymacromonomers: From Wormlike Cylinders to Horseshoe- and Meanderlike Structures , 2002 .

[22]  Manfred Schmidt,et al.  Amphipolar Core−Shell Cylindrical Brushes as Templates for the Formation of Gold Clusters and Nanowires , 2002 .

[23]  K. Matyjaszewski,et al.  Synthesis of Molecular Brushes with Gradient in Grafting Density by Atom Transfer Polymerization , 2002 .

[24]  N. Severin,et al.  Extremely Long Dendronized Polymers: Synthesis, Quantification of Structure Perfection, Individualization, and SFM Manipulation This work was supported by the Deutsche Forschungsgemeinschaft (Sfb 448, TPs 1 and 5) and the Fonds der Chemischen Industrie; SFM=scanning force microscopy. , 2001, Angewandte Chemie.

[25]  K. Ishizu,et al.  Synthesis and solution properties of cylinder brushes derivated by internal domain locking of poly(diblock macromonomer)s , 2001 .

[26]  A. Müller,et al.  Amphiphilic Cylindrical Core−Shell Brushes via a “Grafting From” Process Using ATRP , 2001 .

[27]  K. Matyjaszewski,et al.  Synthesis of Molecular Brushes with Block Copolymer Side Chains Using Atom Transfer Radical Polymerization , 2001 .

[28]  Andreas Schäfer,et al.  Dendronized Polymers: Increasing of Dendron Generation by the Attach-to Approach , 2000 .

[29]  Ian D. Rees,et al.  Hybrid dendritic–linear graft copolymers: Steric considerations in “coupling to” approach , 2000 .

[30]  Zhishan Bo,et al.  Synthesis of Amphiphilic Poly(p-phenylene)s with Pendant Dendrons and Linear Chains , 2000 .

[31]  X. Shen,et al.  Radical copolymerization reactivity of methacryloyl-terminated poly(ethylene glycol methylether) with vinylbenzyl-terminated polystyrene macromonomers , 2000 .

[32]  Jun-gang Gao,et al.  Poly(methacrylates) bearing dendritic blocks , 1999 .

[33]  Rabe,et al.  A Poly(para-phenylene) with Hydrophobic and Hydrophilic Dendrons: Prototype of an Amphiphilic Cylinder with the Potential to Segregate Lengthwise. , 1999, Angewandte Chemie.

[34]  K. Fischer,et al.  Amphipolar core-shell cylindrical brushes , 1999 .

[35]  K. Ishizu,et al.  Radical copolymerization reactivity of maleate-terminated poly(ethylene glycol) with vinylbenzyl-terminated polystyrene macromonomers , 1999 .

[36]  N. Ha.  Determination of triad sequence distribution of copolymers of maleic anhydride and its derivates with donor monomers by 13C n.m.r. spectroscopy , 1999 .

[37]  T. Fukuda,et al.  Atom Transfer Radical Polymerization of Poly(vinyl ether) Macromonomers , 1999 .

[38]  Krzysztof Matyjaszewski,et al.  The Synthesis of Densely Grafted Copolymers by Atom Transfer Radical Polymerization , 1998 .

[39]  A. Schlüter,et al.  Ordered Dendritic Nanorods with a Poly(p-phenylene) Backbone , 1998 .

[40]  A. Schlüter,et al.  Functionalized rod-like polymers: one-dimensional rigid matrices , 1994 .

[41]  K. Hayashi,et al.  Synthesis and Polymerization of Unsaturated Dibasic Acid Derivatives. IV , 1965 .