Polymer Science News

Enzyme-targeted nanoparticles for delivery to ischemic skeletal muscle

RSC - Polym. Chem. latest articles - Wed, 09/13/2017 - 06:49

Polym. Chem., 2017, 8,5212-5219
DOI: 10.1039/C7PY00568G, PaperJ. L. Ungerleider, J. K. Kammeyer, R. L. Braden, K. L. Christman, N. C. Gianneschi
In this study, we show for the first time enzyme-directed assembly of intravenously (IV) delivered nanoparticles in ischemic skeletal muscle, which has applications for drug delivery to damaged muscle of the type prevalent in peripheral artery disease (PAD).
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Categories: Polymer Science News

Colorless polyimides derived from 2R, 5R, 7S, 10S-naphthanetetracarboxylic dianhydride

RSC - Polym. Chem. latest articles - Wed, 09/13/2017 - 05:48
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01048F, PaperXiaofan Hu, Jingling Yan, Yongxia Wang, Hongliang Mu, zikun wang, Haiyang Cheng, Fengyu Zhao, Zhen Wang
A novel alicyclic dianhydride, 2R,5R,7S,10S-naphthanetetracarboxylic dianhydride (HNTDA), was prepared through the hydrogenation of tetramethyl 1,4,5,8-naphthalenetetracarboxylate, followed by deprotection and dehydration reactions. Single crystal X-ray diffraction results revealed that HNTDA possessed...
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Synthesis of regioblock copolythiophene by Negishi catalyst-transfer polycondensation using tBu2Zn[middle dot]2LiCl

RSC - Polym. Chem. latest articles - Wed, 09/13/2017 - 05:48
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01416C, PaperEisuke Goto, Yuto Ochiai, Chen-tsyr Lo, Tomoyuki Koganezawa, Mitsuru Ueda, Tomoya Higashihara
Poly(3-hexylthiophene) with head-to-head/tail-to-tail regioregularity (HHTT-P3HT), controlled molecular weight and low molecular weight distribution was synthesized by Negishi catalyst-transfer polycondensation (NCTP) with tBu2Zn[middle dot]2LiCl. The conditions to achieve controlled polymerizations for HHTT-P3HT...
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Categories: Polymer Science News

Diverse approaches to star polymers via cationic and radical RAFT cross-linking reactions using mechanistic transformation

RSC - Polym. Chem. latest articles - Tue, 09/12/2017 - 08:31

Polym. Chem., 2017, Advance Article
DOI: 10.1039/C7PY01401E, PaperMineto Uchiyama, Kotaro Satoh, Thomas G. McKenzie, Qiang Fu, Greg. G. Qiao, Masami Kamigaito
Core cross-linked star polymers were synthesized via cationic RAFT polymerization and three different approaches in combination with a radical RAFT mechanism.
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Regulating sequence distribution of polyethers via ab initio kinetics control in anionic copolymerization

RSC - Polym. Chem. latest articles - Tue, 09/12/2017 - 06:29

Polym. Chem., 2017, Advance Article
DOI: 10.1039/C7PY01073G, PaperZhichao Wu, Pei Liu, Yu Liu, Wei Wei, Xinlin Zhang, Ping Wang, Zhenli Xu, Huiming Xiong
Design principles for regulating the sequence distribution of polyethers in anionic copolymerization have been provided through kinetics studies and numerical calculation.
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Correction: The effects of polymer topology and chain length on the antimicrobial activity and hemocompatibility of amphiphilic ternary copolymers

RSC - Polym. Chem. latest articles - Tue, 09/12/2017 - 05:28
Polym. Chem., 2018, Advance Article
DOI: 10.1039/C7PY90140B, Correction Open Access &nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Rashin Namivandi-Zangeneh, Rebecca J. Kwan, Thuy-Khanh Nguyen, Jonathan Yeow, Frances L. Byrne, Stefan H. Oehlers, Edgar H. H. Wong, Cyrille Boyer
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The effects of polymer topology and chain length on the antimicrobial activity and hemocompatibility of amphiphilic ternary copolymers

RSC - Polym. Chem. latest articles - Tue, 09/12/2017 - 05:28

Polym. Chem., 2018, Advance Article
DOI: 10.1039/C7PY01069A, PaperRashin Namivandi-Zangeneh, Rebecca J. Kwan, Thuy-Khanh Nguyen, Jonathan Yeow, Frances L. Byrne, Stefan H. Oehlers, Edgar H. H. Wong, Cyrille Boyer
Hyperbranched random copolymers that consist of ethylhexyl hydrophobic groups have the best selectivity compared to linear random and block copolymers.
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Pure hydrophilic block copolymer vesicles with redox- and pH-cleavable crosslinks

RSC - Polym. Chem. latest articles - Tue, 09/12/2017 - 05:28

Polym. Chem., 2018, Advance Article
DOI: 10.1039/C7PY01214D, Paper Open Access &nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Jochen Willersinn, Bernhard V. K. J. Schmidt
The formation and stimuli cleavable crosslinking of completely water drained double hydrophilic block copolymer vesicles is presented.
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Photo, pH and redox multi-responsive nanogels for drug delivery and fluorescence cell imaging

RSC - Polym. Chem. latest articles - Tue, 09/12/2017 - 01:22
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01424D, PaperShuo Chen, Qing Bian, Panjun Wang, Xuewei Zheng, Le Lv, Zhimin Dang, Guojie Wang
Here a novel photo, pH, and redox triple-responsive nanogel of poly(acrylic acid-co-spiropyran methacrylate) crosslinked by disulfide-containing N,N-bis(acryloyl)cystamine was prepared. Upon UV light irradiation or at low pH, the hydrophobic spiropyran...
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Microwave-assisted synthesis of glycopolymers by ring-opening metathesis polymerization (ROMP) in an emulsion system

RSC - Polym. Chem. latest articles - Tue, 09/12/2017 - 01:22
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01415E, PaperFei Fan, Chao Cai, Lei Gao, Jun Li, Ping Zhang, Guoyun Li, Chunxia Li, Guangli Yu
The protecting-group-free synthesis of versatile glycopolymers accelerated by microwave irradiation in an emulsion system is presented herein. Copper-catalyzed azide-alkyne cycloaddition (CuAAC) was employed to prepare a wide range of glycosylated...
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Categories: Polymer Science News

Lysozyme-Catalyzed Formation of a Conjugated Polyacetylene

RSC - Polym. Chem. latest articles - Tue, 09/12/2017 - 01:22
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01250K, CommunicationDaniel L. Morris, Anthony P. Zampino, Alexandra Taraboletti, Leah P Shriver, Thomas C Leeper, Christopher Ziegler
Hen egg white lysozyme catalyzes the polymerization of 2-ethynylpyridine in water as the singular protein catalyst. Inhibition and NMR spectroscopy studies support the hypothesis that polymerization takes place in the...
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Categories: Polymer Science News

Sequence-controlled molecular layers on surfaces by thiol-ene chemistry: synthesis and multitechnique characterization

RSC - Polym. Chem. latest articles - Mon, 09/11/2017 - 11:06
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01515A, CommunicationAudrey Llevot, Sven Ole Steinmueller, Benjamin Bitterer, Barbara Ridder, Jonathan Berson, Stefan Walheim, Thomas Schimmel, Stefan Braese, Frieder Scheiba, Michael A. R. Meier
Silicon surfaces were functionalized by thiol-ene chemistry using sequential reactions of different [small alpha],[small omega]-dienes and [small alpha],[small omega]-dithiols bearing marker moieties. A system of six individual layers was achieved and exhaustively characterized by...
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Categories: Polymer Science News

Synthesis of Microporous Organic Polymer via Radical Polymerization of Fumaronitrile with Divinylbenzene

RSC - Polym. Chem. latest articles - Mon, 09/11/2017 - 08:03
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01240C, PaperFeifei Xie, Wei Hu, Lei Ding, Ke Tian, Zhengchen Wu, Lei Li
To circumvent the intractable disadvantages of hyper-cross-linked strategy based on Friedel-Crafts reaction, a new type of micporous organic polymers (MOPs) has been successfully prepared using fumaronitrile and divinylbenzene via alternating...
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Categories: Polymer Science News

Conjugated phenothiazine oxime esters as free radical photoinitiators

RSC - Polym. Chem. latest articles - Mon, 09/11/2017 - 08:03
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00797C, PaperXiaoyu Ma, Renquan Gu, Liujian Yu, Weixiang Han, Jie Li, Xiuyan Li, Tao Wang
Three novel phenothiazine-substituted oxime esters (Ph-PTZ-OXE, TPA-PTZ-OXE and CZ-PTZ-OXE) applicable to visible laser diodes (405 nm and 455 nm) were successfully designed and synthesised. The introduction of phenothiazine groups in...
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Biocompatible polythiophene-g-polycaprolactone copolymer as efficient dopamine sensor platform

RSC - Polym. Chem. latest articles - Mon, 09/11/2017 - 07:03
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01326D, PaperBrenda G. Molina, Anca-Dana Bendrea, Luminita Cianga, Elaine Armelin, Luis J del Valle, Ioan Cianga, Carlos Aleman
Amphiphilic copolymers consisting of an all conjugated polythiophene backbone and sparsely attached oligo-ε-caprolactone side chains have been prepared by anodic electropolymerization of hydroxymethyl-3,4-ethylenedioxythiophene (HMeEDOT) with a thiophene-ended oligo-ε-caprolactone macromonomer (Th-PCL),...
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Categories: Polymer Science News

Correction: The effects of polymer topology and chain length on the antimicrobial activity and hemocompatibility of amphiphilic ternary copolymers

RSC - Polym. Chem. latest articles - Mon, 09/11/2017 - 07:03
Polym. Chem., 2017, Advance Article
DOI: 10.1039/C7PY90140B, Correction Open Access &nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Rashin Namivandi-Zangeneh, Rebecca J. Kwan, Thuy-Khanh Nguyen, Jonathan Yeow, Frances L. Byrne, Stefan H. Oehlers, Edgar H. H. Wong, Cyrille Boyer
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Modular photo-induced RAFT polymerised hydrogel via thiol-ene click chemistry for 3D cell culturing

RSC - Polym. Chem. latest articles - Fri, 09/08/2017 - 06:20
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01038A, PaperVincent Tan, Duyen Nguyen, Robert Utama, Mohaddeseh Kahram, Francesca Ercole, John F Quinn, Michael R Whittaker, Thomas P. Davis, John Justin Gooding
Cell behaviour changes as a result of the local environment, particularly when transitioning from two dimensional (2D) to three dimensional (3D) environments. It has been acknowledged there is a need...
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Categories: Polymer Science News

Hexamethylphosphoramide as a Highly Reactive Catalyst for Reversible-Deactivation Radical Polymerization of MMA with in-situ Formed Alkyl Iodide Initiator

RSC - Polym. Chem. latest articles - Fri, 09/08/2017 - 05:20
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01186E, PaperYan-an Wang, Yan Shi, Zhi-Feng Fu, Wantai Yang
Hexamethylphosphoramide (HMPA) was found to be a novel and highly efficient organic catalyst for reversible-deactivation radical polymerization (RDRP) of methyl methacrylate (MMA) with in situ formed alkyl iodide initiator. The...
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Categories: Polymer Science News

Grafting well-defined CO2-responsive polymers to cellulose nanocrystals via nitroxide-mediated polymerisation: effect of graft density and molecular weight on dispersion behaviour

RSC - Polym. Chem. latest articles - Fri, 09/08/2017 - 05:20
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01258F, PaperJoe Glasing, Jean Bouchard, Philip Jessop, Pascale Champagne, Michael F. Cunningham
A grafting to approach on a cellulose derivative using reversible deactivation radical polymerisation (RDRP) is reported for the first time. SG1-capped poly(N,N-(diethylamino)ethyl methacrylate) (PDEAEMA) and poly(N-3-(dimethylamino) propyl methacrylamide) (PDMAPMAm) macroalkoxyamines...
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Multivalent Polyrotaxane Vectors as Adaptive Cargo Complexes for Gene Therapy

RSC - Polym. Chem. latest articles - Thu, 09/07/2017 - 06:02
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01256J, PaperArdeleanu Rodinel, Andrei Dascalu, Andrei Neamtu, Dragos Peptanariu, Cristina M. Uritu, Stelian Maier, Alina Nicolescu, Bogdan Simionescu, Mihai Barboiu, Mariana Pinteala
The paper describes the philosophy to design, and a procedure to construct polyrotaxane-type gene carriers, together with the proof of their ability to conjunctively cooperate in order to generate cargo-complexes...
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Categories: Polymer Science News

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