Polymer Science News

Facile Synthesis of Oligo(3-hexylthiophene)s Conductive Wires with Charge-Transfer Functions

RSC - Polym. Chem. latest articles - Fri, 03/31/2017 - 10:09
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00428A, PaperGozde Oktem, Karin Sahre, Brigitte Voit, Rainer Jordan, Anton Kiriy
A series of fully conjugated oligo(3-hexylthiophene)s bearing different starting- and end-groups were synthesized by means of externally initiated Kumada catalyst-transfer polymerization (KCTP) and Grignard Metathesis Polymerization (GRIM). The kind of...
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Categories: Polymer Science News

Selective monophosphorylation of chitosan via phosphorus oxychloride

RSC - Polym. Chem. latest articles - Fri, 03/31/2017 - 10:09
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00123A, PaperDakota Suchyta, Robert Soto, Mark Schoenfisch
Chitosan was selectively monophosphorylated via reaction with phosphorus oxychloride (POCl3) to enhance water solubility while avoiding polyphosphate formation. The use of POCl3 resulted in negligible product degradation (i.e., breakdown of...
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Categories: Polymer Science News

End-chain fluorination of polyesters favors perfluorooctyl bromide encapsulation into echogenic PEGylated nanocapsules

RSC - Polym. Chem. latest articles - Fri, 03/31/2017 - 08:09
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00400A, PaperSophie Houvenagel, Guilherme Fadel Picheth, Camille Dejean, Annie Brulet, Alexis Chenneviere, Olivier Couture, Nicolas Huang, Laurence Moine, Nicolas Tsapis
Perfluorinated end-capped polylactides (PLAs) with various perfluorinated chain lengths from C3F7 to C13F27 were synthesized and formulated into PEGylated nanocapsules of perfluorooctyl bromide (PFOB) to be used as ultrasound contrast...
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Categories: Polymer Science News

Self-Healable Hydrogels with Cross-Linking Induced Thermo-Responsiveness and Multi-Triggered Gel-Sol-Gel Transition

RSC - Polym. Chem. latest articles - Fri, 03/31/2017 - 08:09
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00445A, PaperXuemeng Wang, Gang Bian, Miao Zhang, Limin Chang, Zhiwei Li, Xu Li, Heng An, Jianglei Qin, Ruixue Chang, Haijun Wang
Self-healable hydrogels with regulated cross-linking induced thermo-responsiveness (CIT) were prepared from P(N,N-dimethylacrylamide-stat-diacetone acrylamide) P(DMA-stat-DAA), which was synthesized though RAFT copolymerization. The copolymer of P(DMA-stat-DAA) with various compositions were cross-linked by...
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Categories: Polymer Science News

1,2,3-Triazolium-based linear ionic polyurethanes

RSC - Polym. Chem. latest articles - Fri, 03/31/2017 - 08:09
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00406K, PaperAntoine Jourdain, Iurii Antoniuk, anatoli serghei, Eliane ESPUCHE, Eric Drockenmuller
We report the synthesis of a series of ionic polyurethanes (PUs) issued from the polyaddition of a 1,2,3-triazolium-functionalized diol monomer having a bis(trifluromethylsulfonyl)imide (TFSI) counter-anion with four aliphatic, cycloaliphatic or...
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Categories: Polymer Science News

Molecular Design through the Computational Simulation on the Benzo[2,1-b;3,4-b']dithiophene-Based Highly Ordered Donor Material for Efficient Polymer Solar Cells

RSC - Polym. Chem. latest articles - Fri, 03/31/2017 - 08:09
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00292K, PaperSung Jae Jeon, Seung Jun Nam, Yong Woon Han, Tae-Ho Lee, Doo Kyung Moon
Donor-acceptor (D-A) copolymer has been proved to be excellent candidates for efficient polymer solar cells (PSCs). An easy and powerful strategy of D-A copolymer design to enhance performance of PSCs...
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Categories: Polymer Science News

A Comprehensive Kinetic Study of the Conventional Free-Radical Polymerization of Seven-Membered Cyclic Ketene Acetals

RSC - Polym. Chem. latest articles - Thu, 03/30/2017 - 05:01
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00337D, PaperAntoine Tardy, Jean-Claude Honore, Didier Siri, Julien Nicolas, Didier Gigmes, Catherine Lefay, Yohann Guillaneuf
The current study reports on the kinetic analysis of the free-radical polymerization of several seven-membered cyclic ketene acetal monomers and in particular 2-methylene-1,3-dioxepane (MDO) and 5,6-benzo-2-methylene-1,3-dioxepane (BMDO). Such monomers are...
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Categories: Polymer Science News

Nanoimprinting-induced molecular orientation in poly(3-hexylthiophene) nanogratings and its miraculous eternal after thermal annealing

RSC - Polym. Chem. latest articles - Tue, 03/28/2017 - 11:37
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00378A, PaperGuangzhu Ding, Kaixuan Wang, xiaohui Li, chao Wang, Zhijun Hu, Jieping Liu
Nanoimprinting has been well explored not only to fabricate topographical nanostructures simply, but also to induce the preferential molecule orientation of conjugated polymer film. We demonstrate here that the nanograting...
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Categories: Polymer Science News

Fluorescence fiber-optic turn-on detection of trace hydrazine vapor with dicyanovinyl-functionalized triazatruxene-based hyperbranched conjugated polymer nanoparticles

RSC - Polym. Chem. latest articles - Tue, 03/28/2017 - 11:37
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00015D, PaperYuxiang Xu, Hua Li, Xiaofu Wu, Yonghong Chen, Hao Hang, Hui Tong, Lixiang Wang
A solution-dispersible hyperbranched conjugated polymer nanoparticle based on triazatruxene, TATHBP-DCV, was readily prepared through Suzuki coupling polymerization in miniemulsion, followed by post-functionalization of its numerous terminal aldehyde groups into dicyanovinyl...
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Categories: Polymer Science News

A Dendrimer-Hydrophobic Interaction Synergy Improves the Stability of Polyion Complex Micelles

RSC - Polym. Chem. latest articles - Tue, 03/28/2017 - 10:36
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00304H, PaperMarcos Fernandez-Villamarin, Ana Sousa-Herves, Silvia Porto, Noelia Guldris, Jose Martinez-Costas, Ricardo Riguera, Eduardo Fernandez-Megia
Polyion complex (PIC) micelles incorporating PEG-dendritic copolymers display an unprecedented stability towards ionic strength that is amplified via hydrophobic interactions. The tridimensional orientation of peripheral hydrophobic linkers between charged groups...
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Categories: Polymer Science News

Highly Porous Photoluminescent Diazaborole-Linked Polymers: Synthesis, Characterization, and Application to Selective Gas Adsorption

RSC - Polym. Chem. latest articles - Tue, 03/28/2017 - 10:36
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C6PY02156E, PaperZafer Kahveci, Ali Kemal Sekizkardes, Ravi K K. Arvapally, Logan Wilder, Hani M. El-Kaderi
The formation of boron-nitrogen (B-N) bonds has been widely explored for the synthesis of small molecules, oligomers, or linear polymers; however, its use in constructing porous organic frameworks remains very...
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Categories: Polymer Science News

Polyamino acid-based gemcitabine nanocarriers for targeted intracellular drug delivery

RSC - Polym. Chem. latest articles - Tue, 03/28/2017 - 10:36
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00443E, PaperWenzhuo Teng, Fan Jia, Haijie Han, Zhihui Qin, Qiao Jin, Jian Ji
In the present study, we have successfully fabricated a biocompatible polyamino acid-based nanocarrier with reduction-sensitivity and targeting ability for gemcitabine (GEM) delivery. The GEM-conjugated polyamino acid Biotin-poly(ethylene glycol)-block-poly[(L-lysine-co-L-leucine)-graft-(GEM-co-rhodamine B)] (Biotin-PEG-b-P[(Lys-co-Leu)-graft-(GEM-co-Rho...
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Categories: Polymer Science News

Polyurethane based organic macromolecular contrast agent (PU-ORCA) for magnetic resonance imaging

RSC - Polym. Chem. latest articles - Tue, 03/28/2017 - 10:36
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00166E, PaperHaritz Sardon, Sofiem Garmendia, Daniele Mantione, Silvia Alonso-de Castro, Coralie Jehanno, Luis Lezama, James Hedrick, David Mecerreyes, Luca Salassa
Magnetic resonance imaging (MRI) is one of the leading imaging modalities because of the combination of convenient non-invasive application, high spatial resolution, and tomographic capability. MRI is not as sensitive...
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Categories: Polymer Science News

A Mechanistic Investigation of Pickering Emulsion Polymerization

RSC - Polym. Chem. latest articles - Tue, 03/28/2017 - 10:36
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00308K, PaperAndrea Lotierzo, Stefan A. F. Bon
Pickering emulsion polymerization offers a versatile way of synthetising hybrid core-shell latexes where a polymer core is surrounded by an armour of inorganic nanoparticles. A mechanistic understanding of the polymerization...
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Categories: Polymer Science News

RAFT/MADIX polymerization of N-vinylcaprolactam in water-ethanol solvent mixtures

RSC - Polym. Chem. latest articles - Tue, 03/28/2017 - 10:36
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C6PY02224C, CommunicationIne Van Nieuwenhove, Samarendra Maji, Mamoni Dash, Sandra Van Vlierberghe, Richard Hoogenboom, Peter Dubruel
The present paper demonstrates the successful RAFT/MADIX polymerization of N-vinylcaprolactam at ambient temperature in water-ethanol mixtures. It was observed that the monomer conversion increased with increasing v% of water present...
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Categories: Polymer Science News

Exploring structural effects in single-chain "folding" mediated by intramolecular thermal Diels-Alder chemistry

RSC - Polym. Chem. latest articles - Mon, 03/27/2017 - 14:27
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00320J, PaperAshley Hanlon, Ian Martin, Elizabeth Bright, Jennifer Chouinard, Kyle Rodriguez, Gabriel Patenotte, Erik B Berda
We describe a method to fold single polymer chains into nanoparticles using simple thermal Diels-Alder (DA) chemistry. Two different folding strategies are explored, one employing "chain-internal folding" and the other...
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Categories: Polymer Science News

Preparation of polythiophene microrods with ordered chain alignment using nanoporous coordination template

RSC - Polym. Chem. latest articles - Mon, 03/27/2017 - 13:27
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00309A, PaperTakashi Kitao, Michael MacLean, Benjamin Le Ouay, Yotaro Sasaki, Masahiko Tsujimoto, Susumu Kitagawa, Takashi Uemura
The properties of polymeric materials can be amplified by macromolecular alignment. The highly ordered chain alignment of unsubstituted polythiophene, an unprocessable polymer, has been achieved using a porous coordination polymer...
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Categories: Polymer Science News

Alternating and random-sequence polyesters with distinct physical properties

RSC - Polym. Chem. latest articles - Mon, 03/27/2017 - 13:27
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00165G, PaperChao Peng, Abraham Joy
Polymers with controlled sequence can exhibit unique properties and functions when compared to their random counterparts. While many methodologies have been utilized to synthesize sequence-controlled polymers, there is still a...
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Categories: Polymer Science News

Bioinspired ultrasound-responsive fluorescent metal-ligand crosslinked polymer assemblies

RSC - Polym. Chem. latest articles - Mon, 03/27/2017 - 13:27
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00256D, Communicationzhenhua wang, Zhanhua Wang, Hesheng Xia
Inspired by the on-off switchable fluorescence function during the jellyfish breathing, we developed a novel strategy to construct an ultrasound-responsive fluorescent polymer assemblies. Upon exposed to ultrasound, the assemblies underwent...
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Categories: Polymer Science News

Ethylene Polymerization Catalyzed by Dinickel Complex with a Double-Decker Structure

RSC - Polym. Chem. latest articles - Mon, 03/27/2017 - 13:27
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00333A, PaperDaisuke Takeuchi, Yuriko Chiba, Shigenaga Takano, Hideo Kurihara, Minoru Kobayashi, Kohtaro Oskada
Double-decker dinickel complexes with a macrocyclic ligand containing two salicylaldimine groups are employed as the catalysts for ethylene polymerization. The ligand, whose two imine nitrogens are connected by a 2,3,6,7,9,9-hexamethylxanthene-4,5-diyl...
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Categories: Polymer Science News

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