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Synthesis and stability of BODIPY‐based fluorescent polymer brushes at different pHs

11-10-2014 | Dilek Cimen, Talya Tugana Kursun, Tuncer Caykara, Journal of Polymer Science Part A: Polymer Chemistry, 2014

ABSTRACT We report a simple strategy for the grafting of poly(methacrylic acid) [poly(MAA)] brushes from silicon substrate by surface‐initiated RAFT polymerization and the subsequent coupling of BODIPY to these brushes to render them fluorescent. The poly(MAA) brushes were first generated by ...

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Amphiphilic dendritic copolymers of tert‐butyl‐glycidylether and glycidol as a nanocontainer for an anticancer ruthenium complex

08-10-2014 | Marcin Libera, Petr Formanek, Leonard Schellkopf, Barbara Trzebicka, Andrzej Dworak, Manfred Stamm, Journal of Polymer Science Part A: Polymer Chemistry, 2014

ABSTRACT Dendritic copolymers comprising a hydrophobic core and hydrophilic shell with nearly equal numbers of hydroxyl groups in the shell and different densities in the core were prepared by a multi‐step process based on anionic ring‐opening polymerization. The diversity in the core density ...

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Ionic liquids as reactive additives for the preparation and modification of epoxy networks

07-10-2014 | Thi Khan Ly Nguyen, Sébastien Livi, Sébastien Pruvost, Bluma G. Soares, Jannick Duchet‐Rumeau, Journal of Polymer Science Part A: Polymer Chemistry, 2014

ABSTRACT In this study, epoxy‐networked polymeric materials containing tributyl (ethyl) phosphonium diethyl phosphate (CYPHOS®IL169) and trihexyl (tetradecyl) phosphonium bis 2,4,4‐(trimethyl pentyl)‐phosphinate (CYPHOS®IL104) were developed from a mixture of epoxy prepolymer (DGEBA) and ...

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Pyrrolo[3,4‐c]pyrrole‐1,3‐dione‐based large band gap polymers containing benzodithiophene derivatives for highly efficient simple structured polymer solar cells

07-10-2014 | Vellaiappillai Tamilavan, Kyung Hwan Roh, Rajalingam Agneeswari, Dal Yong Lee, Shinuk Cho, Youngeup Jin, Sung Heum P ..., Journal of Polymer Science Part A: Polymer Chemistry, 2014

ABSTRACT Pyrrolo[3,4‐c]pyrrole‐1,3(2H,5H)‐dione (DPPD)‐based large band gap polymers, P(BDT‐TDPPDT) and P(BDTT‐TDPPDT), are prepared by copolymerizing electron‐rich 4,8‐bis(2‐ethylhexyloxy)benzo[1,2‐b:4,5‐b′]dithiophene (BDT) or ...

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Free radical photopolymerization initiated by UV and LED: Towards UV stabilized, tack free coatings

07-10-2014 | Feyza Karasu, Céline Croutxé‐Barghorn, Xavier Allonas, Leendert G.J. Ven, Journal of Polymer Science Part A: Polymer Chemistry, 2014

ABSTRACT UV stabilizers (UV absorbers and Hindered Amine Light Stabilizers‐HALS) are added to UV‐curable formulations to provide long‐term durability. The influence of HALS and the filtering effect of UV absorbers are investigated under UV and LED irradiation by using different photoinitiating ...

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Monomers for adhesive polymers. XV. Synthesis, photopolymerization, and adhesive properties of polymerizable β‐ketophosphonic acids

07-10-2014 | Yohann Catel, Thorsten Bock, Norbert Moszner, Journal of Polymer Science Part A: Polymer Chemistry, 2014

ABSTRACT The novel polymerizable β‐ketophosphonic acids 4, 8, 10, and 16 as well as the 9‐(methacryloyloxy)‐nonylphosphonic acid 20 were synthesized in four to eight steps. They were characterized by 1H NMR, 13C NMR, and 31P NMR spectroscopy and by high‐resolution mass spectra. The ...

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Effect of N‐methyl amide linkage on hydrogen bonding behavior and water transport properties of partially N‐methylated random aromatic copolyamides

03-10-2014 | Motohiro Aiba, Takahiro Tokuyama, Hidetoshi Matsumoto, Hiroki Tomioka, Tomoya Higashihara, Mitsuru Ueda, Journal of Polymer Science Part A: Polymer Chemistry, 2014

ABSTRACT The synthesis, conformational preferences, hydrogen bonding behaviors, and membrane properties of new partially N‐methylated random aromatic copolyamides were reported. These copolyamides were prepared by the low temperature polycondensations of isophthaloyl chloride with ...

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Rigid triol and diol with adamantane‐like core derived from naturally occurring myo‐inositol and their polyaddition with diisocyanates

03-10-2014 | Shusuke Okamoto, Shohei Onoue, Masakazu Kobayashi, Atsushi Sudo, Journal of Polymer Science Part A: Polymer Chemistry, 2014

ABSTRACT Two orthoester derivatives 1 and 2 that are easily accessible from naturally occurring myo‐inositol were exploited as new triol‐ and diol‐type monomers bearing a rigid adamantane‐like structure to polyaddition with diisocyanates that gave the corresponding networked and linear ...

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From fatty acid and lactone biobased monomers toward fully renewable polymer latexes

03-10-2014 | Mónica Moreno, Monika Goikoetxea, José C. Cal, María J. Barandiaran, Journal of Polymer Science Part A: Polymer Chemistry, 2014

ABSTRACT Novel waterborne polymeric materials based on renewable resource monomers have been prepared by the environmentally friendly miniemulsion polymerization of an oleic acid‐derivative monomer (MOA) and the α‐methylene‐γ‐butyrolactone (α‐MBL). The effect of the incorporation of different ...

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Linear low‐density polyethylene nanocomposites by in situ polymerization using a zirconium‐nickel tandem catalyst system

03-10-2014 | Adriana C. Pinheiro, Adriana C. A. Casagrande, Osvaldo L. Casagrande, Journal of Polymer Science Part A: Polymer Chemistry, 2014

ABSTRACT A series of linear low‐density polyethylene (LLDPE) nanocomposites containing different types of nanofiller (TiO2, MWCNT, expanded graphite, and boehmite) were prepared by in situ polymerization using a tandem catalyst system composed of {TpMs}NiCl (1) and Cp2ZrCl2 (2), and analyzed ...

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