Polymer Science News

Synthesis of pH-cleavable poly(trimethylene carbonate)-based block copolymers via ROP and RAFT polymerization

RSC - Polym. Chem. latest articles - 2 hours 28 min ago
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00606G, PaperJingjiang Sun, Stefan Fransen, Xiaoqian Yu, Dirk Kuckling
In this work, poly(dimethylacrylamide)-b-poly(trimethylene carbonate) (PDMAAm-b-PTMC) block copolymers containing a pH-sensitive imine linkage were successfully synthesized by combination of ring-opening polymerization (ROP) and reversible addition-fragmentation chain transfer (RAFT) polymerization. A...
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ipso-Arylative polymerization as a route to [small pi]-conjugated polymers: Synthesis of poly(3-hexylthiophene)

RSC - Polym. Chem. latest articles - Wed, 05/23/2018 - 13:43
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00605A, PaperFeng-Yang Shih, Sisi Tian, Nicholas Gallagher, Young Seok Park, Robert B. Bernard Grubbs
ipso-Arylative cross-coupling with two 3-hexylthiophene derivatives, 5-bromo-4-hexylthiophen-2-yl)diphenylmethanol and 2-(5-bromo-4-hexylthiophen-2-yl)propan-2-ol, has been used to prepare poly(3-hexylhiophene) (P3HT) as a model conjugated polymer. P3HT with number-average molecular weights ranging from 8-20 kg/mol...
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Synthesis of block copolymers using end-functionalized polyacetylenes as macroinitiators

RSC - Polym. Chem. latest articles - Wed, 05/23/2018 - 10:36
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00598B, PaperMasashi Shiotsuki, Kei Takahashi, Jesus Rodriguez Castanon, Fumio Sanda
Polyacetylenes substituted with phenyl, N-tert-butoxycarbonyl-ʟ-valine 4-anilide, and (S)-1-(acetoxy)ethyl groups with number-average molecular weights ranging from 3800 to 13500 were synthesized by the polymerization of the corresponding acetylene monomers using [{1,1'-bis(diphenylphosphino)ferrocene}PdBr(C6H4-o-CH2OH)]...
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Hyperbranched Polypeptides Synthesized from Phototriggered ROP of a Photocaged Nε-[1-(2-nitrophenyl)ethoxycarbonyl]-L-Lysine-N-Carboxyanhydride: Microstructures and Effects of Irradiation Intensity and Nitrogen Flow Rate

RSC - Polym. Chem. latest articles - Wed, 05/23/2018 - 07:33
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00641E, PaperPan Li, Yingying Song, Chang-Ming Dong
The controlled polymerization to synthesize the hyperbranched polypeptides with tunable degree of branching (DB) and molecular weight (MW) is still challenging in synthetic polypeptides and their biomaterials fields. A new...
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Poly(2-isopropenyl-2-oxazoline) as versatile platform towards thermoresponsive copolymers

RSC - Polym. Chem. latest articles - Wed, 05/23/2018 - 06:33
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00612A, PaperFlorica Adriana Jerca, Valentin Victor Jerca, Alina Anghelache, Dumitru Vuluga, Richard Hoogenboom
The present study describes the synthesis of thermoresponsive polymers with tailorable properties using a simple straightforward and robust polymer modification approach. Herein we first report a simple strategy to obtain...
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Coordinative chain transfer copolymerization of ethylene and styrene using an ansa-bis(fluorenyl) neodymium complex and a dialkylmagnesium

RSC - Polym. Chem. latest articles - Wed, 05/23/2018 - 06:33
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00712H, PaperWinnie Nzahou Ottou, Sebastien Norsic, Marie-Noelle Poradowski, Lionel Perrin, Franck D'Agosto, Christophe Boisson
Coordinative chain transfer copolymerization of ethylene and styrene was successfully achieved using an ansa-bisfluorenyl neodymium complex, a dialkylmagnesium as a chain agent transfer and di-n-butylether (Bu2O) as co-solvent. Under these...
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Closer to Polydopamine structure: new insights from a combined 13C/1H/2H solid-state NMR study on deuterated samples

RSC - Polym. Chem. latest articles - Wed, 05/23/2018 - 05:33
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00633D, PaperMonica Circu, Claudiu Filip
Despite the large number of applications reported for polydopamine (PDA), there is still a fundamental challenge remained in the field: no complete structure elucidation of PDA is available to date....
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Dispersity control in atom transfer radical polymerizations through addition of phenylhydrazine

RSC - Polym. Chem. latest articles - Tue, 05/22/2018 - 06:48

Polym. Chem., 2018, Advance Article
DOI: 10.1039/C8PY00033F, PaperVivek Yadav, Nairah Hashmi, Wenyue Ding, Tzu-Han Li, Mahesh K. Mahanthappa, Jacinta C. Conrad, Megan L. Robertson
Phenylhydrazine is an effective modifier for conventional ATRP syntheses, providing systematic control over the dispersity of polymers with unimodal molecular weight distributions.
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New Effort to Synthesize Star Isotactic Polypropylene

RSC - Polym. Chem. latest articles - Tue, 05/22/2018 - 05:43
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00318A, CommunicationXinzhi Liu, Hui Niu, Yang Li, Jin-Yong Dong
This study demonstrates an efficient arm-first approach for the synthesis of star isotactic polypropylene (iPP) via two steps: in the first step iPP "arm" containing a methoxysilane-terminal end was prepared...
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Controlled Synthesis of Diverse Single-Chain Polymeric Nanoparticles Using Polymer Bearing Furan-Protected Maleimide Moieties

RSC - Polym. Chem. latest articles - Tue, 05/22/2018 - 04:42
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00481A, PaperYu Zhou, Yangcui Qu, Qian Yu, Hong Chen, Zhengbiao Zhang, Xiulin Zhu
Facile fabrication of well-defined single-chain polymeric nanoparticles (SCNPs) with variable sizes was realized using polymers with furan-protected maleimide moieties (FMI) as a synthetic platform. Well-defined linear polymer chains bearing FMI...
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Solution self-assembly of poly(3-hexylthiophene)-poly(lactide) brush copolymers: impact of side chain arrangement

RSC - Polym. Chem. latest articles - Mon, 05/21/2018 - 09:23
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00627J, PaperSuk-kyun Ahn, JINWOO NAM, Jiahua Zhu, Eunji Lee, S. Michael Kilbey
We exploit the crowded intramolecular environment of brush copolymers and [small pi]-[small pi] interactions of poly(3-hexylthiophene) (P3HT) side chains to produce tailorable nanostructures by self-assembly in solution. A series of brush copolymers...
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Modification of a conventional polyurethane composition provides significant anti-biofilm activity against Escherichia coli

RSC - Polym. Chem. latest articles - Mon, 05/21/2018 - 09:23
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00492G, CommunicationChao Peng, Apoorva Vishwakarma, Zhuoran Li, Toshikazu Miyoshi, Hazel Barton, Abraham Joy
Catheter-associated urinary tract infections, caused by a build-up of biofilm on the catheter surface, are one of the most common nosocomial infections. For this work, we prepared a compositional variant...
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Potassium-sensitive poly(N-isopropylacrylamide)-based hydrogels for sensor applications

RSC - Polym. Chem. latest articles - Mon, 05/21/2018 - 08:22
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00490K, PaperDominic Buning, Franka Ennen, Sarah Walter, Tobias Hennecke, Mathias Ulbricht
Host-guest interactions for sensor applications have been widely applied to various platforms ranging from hard to soft nanoparticles or bulk materials. Their combination with stimuli-responsive polymers such as thermosensitive polymeric...
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Highly porous, emulsion-templated, zwitterionic hydrogels: amplified and accelerated uptakes with enhanced environmental sensitivity

RSC - Polym. Chem. latest articles - Mon, 05/21/2018 - 06:21
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00588E, PaperTao Zhang, Michael S. Silverstein
A series of highly porous zwitterionic hydrogel polyHIPEs (Z-HG-PHs) were synthesized within oil-in-water high internal phase emulsions (HIPEs) from N-(3-sulfopropyl)-N-(methacryloxyethyl)-N,N-dimethylammonium betaine and crosslinked with N,N'-methylenebisacrylamide. The Z-HG-PHs exhibited an anti-polyelectrolyte...
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Polymerization of Acrylates Based on n-Type Organic Semiconductors using Cu(0)-RDRP

RSC - Polym. Chem. latest articles - Fri, 05/18/2018 - 15:09
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00670A, PaperChristopher Tonge, Ethan Sauve, Nathan Paisley, Jordan Heyes, Zac Hudson
Three acrylic monomers have been prepared based on organic semiconductor motifs commonly used as n-type materials in organic light-emitting diodes (OLEDs) and organic thin-film transistors (OTFTs). Facile room-temperature polymerizations were...
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Enzyme-driven biodegradable nanomotor based on tubular-shaped polymeric vesicles

RSC - Polym. Chem. latest articles - Fri, 05/18/2018 - 06:56
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00559A, CommunicationB. Jelle Toebes, Loai Abdelmohsen, Daniela A. Wilson
Various nanomotors that can mimic the motion of natural systems have recently been proposed. Yet, most designs are metal based and not applicable in biological settings. We report the first...
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Coordination-induced assemblies of quantum dots in amphiphilic thermo-responsive block copolymer micelles: morphologies, optical properties and applications

RSC - Polym. Chem. latest articles - Thu, 05/17/2018 - 12:32
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00510A, PaperJianhua Lu, Bingxin Liu, Bingfeng Shi, Changli Lu
Nanostructured hybrid materials composed of functional block copolymers (BCP) and inorganic nanoparticles (NPs) have attracted growing interest. In this paper, the quantum dots/block copolymer (QDs)/BCP hybrid assemblies with precise control...
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Thin cyclomatrix polyphosphazene films: Interfacial polymerization of hexachlorocyclotriphosphazene with aromatic biphenols

RSC - Polym. Chem. latest articles - Thu, 05/17/2018 - 10:30
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00444G, PaperEvelien Maaskant, Hubert Gojzewski, Mark A. Hempenius, G. Julius Vancso, Nieck E. Benes
A series of thin cyclomatrix polyphosphazene films has been prepared by interfacial polymerization of hexachlorocyclotriphosphazene (HCCP) with an aromatic biphenol. The pKa values of the biphenol used strongly influence the...
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Combination of Preparative and Two-Dimensional Chromatographic Fractionation with Thermal Analysis for the Branching Analysis of Polyethylene.

RSC - Polym. Chem. latest articles - Thu, 05/17/2018 - 08:26
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00522B, PaperHarald Pasch, Paul Severin Eselem Bungu, Kristina Pflug
Low density polyethylene (LDPE) or, more generally, branched polyethylene exhibits excellent processing properties thanks to its complex molecular structure. The branches on the polymer backbone are distributed by location and...
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Elaboration of antimicrobial polymeric materials by dispersion of well-defined amphiphilic methacrylic SG1-based copolymers

RSC - Polym. Chem. latest articles - Wed, 05/16/2018 - 05:46
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00523K, PaperTarek Benkhaled, Slim Hadiouch, Hamza Olleik, Josette Perrier, Cedric Ysacco, Didier Gigmes, Yohann Guillaneuf, Marc Maresca, Catherine Lefay
The bacterial resistance to antibiotics is a major public health problem and it is urgent to find new antimicrobial materials to circumvent the development of resistant pathogens. The aim of...
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