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Empowering mechanochemistry with multi-mechanophore polymer architectures

Mon, 06/11/2018 - 14:07
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00720A, MinireviewBrandon Bowser, Stephen L Craig
The development of multi-mechanophore polymers (MMPs) has empowered new methodologies for observing, quantifying, and exploiting mechanochemical transformations. For example, techniques such as single molecule force spectroscopy and pulsed ultrasound can...
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Categories: Polymer Science News

Light- and pH-dually responsive dendrimer-star copolymer containing spiropyran groups: synthesis, self-assembly and controlled drug release

Mon, 06/11/2018 - 11:06
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00721G, PaperWeizhong Yuan, Xueyuan Gao, Erli Pei, Zhihong Li
Amphiphilic dendrimer-star copolymer poly(ε-caprolactone)-block-poly(methacrylic acid-co-spiropyran methacrylate) (DPCL-b-P(MAA-co-SPMA)) was synthesized by the combination of ring-opening polymerization (ROP), atom transfer radical polymerization (ATRP), acidolysis and DCC reactions. The copolymer could self-assemble into...
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Categories: Polymer Science News

Swelling-Induced Pore Generation in Fluorinated Polynorbornene Block Copolymer Films

Mon, 06/11/2018 - 09:01
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00646F, PaperYunshik Cho, Youngjin Kim, Tae-Lim Choi, Jeewoo Lim, Kookheon Char
Selective swelling of block copolymer (BCP) films is an emerging method for preparing mesoporous polymer films. Materials used in this simple and mild pore-generation strategy, however, have been limited to...
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Categories: Polymer Science News

A Tunable One-Pot Three-Component Synthesis of an 125I and Gd-Labelled Star Polymer Nanoparticle for Hybrid Imaging with MRI and Nuclear Medicine

Mon, 06/11/2018 - 04:00
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00621K, PaperLars Esser, Nigel Lengkeek, Bradford A Moffat, Mai Vu, Ivan Greguric, John F Quinn, Thomas P. Davis, Michael R Whittaker
The successful treatment of a disease via individualized treatment protocols relies on an early and accurate diagnosis. Advances to imaging hardware, such as hybrid PET/MRI scanners, have overcome the inherit...
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Categories: Polymer Science News

Convenient Synthesis of Versatile Syndiotactic Polystyrene Material Containing Pendant Alkenyl Groups with Scandium Catalyst System

Mon, 06/11/2018 - 03:00
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00607E, CommunicationKe Yang, Hui Niu, Zhenghai Shi, Rui Tan, Tingting Li, Kaihua Shen, Yang Li
The syndioselective copolymerization of styrene (St) with five alkenyl functionalized styrenic monomers by the use of [(C5Me4SiMe3)Sc(CH2C6H4NMe2-o)2]/[Ph3C][B(C6F5)4] produce a new family of versatile syndiotactic polystyrene materials (sPS) with pendant vinyl...
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Categories: Polymer Science News

Cyano-Substituted Benzochalcogenadiazole-Based Polymer Semiconductors for Balanced Ambipolar Organic Thin-Film Transistors

Mon, 06/11/2018 - 02:00
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00540K, PaperShengbin Shi, Hang Wang, Peng Chen, Mohammad Afsar Uddin, Yuxi Wang, Yumin Tang, Han Guo, Xing Cheng, Shiming Zhang, Han Young Woo, Xugang Guo
Due to their high-lying lowest unoccupied molecular orbitals (LUMOs), -conjugated polymers based on benzothiadiazole and its derivatives typically are p-type. We report here the successful development of two narrow bandgap,...
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Categories: Polymer Science News

Dual stimuli- responsive viologen-containing poly(2-isopropyl-2-oxazoline) and its multi-modal electrochromic phase transition

Mon, 06/11/2018 - 00:59
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00591E, PaperJaehyuk Nam, Yongseok Jung, Jung Ho Joe, Woo-Dong Jang
A viologen-containing thermo-responsive poly(2-isopropyl-2-oxazoline) (PiPOx-V) was synthesized by simple one-pot reaction. During the cationic ring opening polymerization of 2-isopropyl-2-oxazoline, living catinioc polymer chains were reacted with 4,4-bipyridyl to produce dual...
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Categories: Polymer Science News

Photo-crosslinkable second-order nonlinear optical polymer: facile synthesis and enhanced NLO thermostability

Sat, 06/09/2018 - 12:15
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00686E, PaperZiyao Cheng, Runli Tang, Ruifang Wang, Yujun Xie, Pengyu Chen, Guangchao Liu, Zhen Li
A new photo-crosslinkable second-order nonlinear optical (NLO) linear polymer was designed and successfully prepared by the azido-alkyne click reaction, in which, the azo-benzene moieties acted as the chromophore. The latent...
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Categories: Polymer Science News

Aspect-ratio-dependent interaction of molecular polymer brushes and multicellular tumour spheroids

Fri, 06/08/2018 - 18:51
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00703A, CommunicationMarkus Muellner, Kylie Yang, Amandeep Kaur, Elizabeth J New
Polymer nanoparticles based on molecular polymer brushes allow precise and independent tailoring of nanoparticle characteristics. This enables the synthesis of soft hydrophilic polymer particles with matching composition and surface chemistry...
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Categories: Polymer Science News

Balancing steric and electronic effects of bidentate, mixed P,N ligands to control Kumada catalyst transfer polycondensation of a sterically hindered thiophene

Fri, 06/08/2018 - 09:40

Polym. Chem., 2018, Advance Article
DOI: 10.1039/C8PY00452H, PaperS. Hameury, C. Gourlaouen, M. Sommer
Screening various P,N ligands to control KCTP of a sterically hindered thiophene reveals an oxazoline-based ligand most effective.
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Categories: Polymer Science News

Cyclodextrin-Based Host-Guest Supramolecular Hydrogel and Its Application in Biomedical Fields

Fri, 06/08/2018 - 03:24
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00730F, Review ArticleGuiting Liu, Qi-Juan Yuan, Geoffrey Hollett, Wei Zhao, Yang Kang, Jun Wu
The cyclodextrins (CDs) based host-guest inclusion complexation between cyclodextrins (CDs) and guest moieties has inspired the fabrication of novel supramolecular hydrogels for biomedical applications. From a topology of view, this...
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Categories: Polymer Science News

Enhancement of Microphase Ordering and Mechanical Properties of Supramolecular Hydrogen-Bonded Polyurethane Networks

Thu, 06/07/2018 - 08:01
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00604K, PaperDaniel Hermida Merino, Benjamin ODriscoll, Lewis R. Hart, Peter Harris, Howard M. Colquhoun, Andrew Slark, Cristina Prisacariu, Ian Hamley, Wayne Hayes
The improvement of the mechanical properties of supramolecular polymer networks is currently receiving significant interest both within academic and industrial circles in order to enable the application of these desirable...
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Categories: Polymer Science News

Correction: pH and reduction-activated polymeric prodrug nanoparticles based on a 6-thioguanine-dialdehyde sodium alginate conjugate for enhanced intracellular drug release in leukemia

Wed, 06/06/2018 - 07:42
Polym. Chem., 2018, Advance Article
DOI: 10.1039/C8PY90089B, Correction Open Access &nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Yanming Wan, Ying Bu, Jiaming Liu, Jia Yang, Weiquan Cai, Yihua Yin, Wenjin Xu, Peihu Xu, Jingli Zhang, Meng He
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Categories: Polymer Science News

Tumor pH and Intracellular Reduction Responsive Polypeptide Nanomedicine with Sheddable PEG Corona and Disulfide-Cross-Linked Core

Tue, 06/05/2018 - 03:25
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00579F, PaperYue Ding, Chang Du, Jiwen Qian, Linzhu Zhu, Yue Su, Rong Zhang, Chang-Ming Dong
Abstract: To overcome the tumor and cellular barriers in cancer chemotherapy, constructing biodegradable polymeric nanomedicine with pathological stimuli-responsivity is still challenging. In this work, a new class of polypeptide copolymer...
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Categories: Polymer Science News

Synthesis of Copolymers with Exact Alternating Sequence Using Cationic Polymerization of Pre-Sequenced Monomers

Tue, 06/05/2018 - 03:25
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00626A, CommunicationChengke Qu, Zhen Hua Li, Junpo He
Alternating copolymers composed of styrenic/methyl vinyl ether derived repeating unit and styrenic/vinyl alcohol based repeating unit were synthesized through cationic RAFT polymerization of 1,3-butadiene derivatives and subsequent hydrogenation reaction. The...
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Categories: Polymer Science News

Polymer-based nanocomposites for heavy metal ions removal from aqueous solution: a review

Tue, 06/05/2018 - 02:24
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00484F, Review ArticleGuixia Zhao, Xiubing Huang, Zhenwu Tang, Qifei Huang, Fenglei Niu, Xiang-Ke Wang
Water pollutant treatment has becoming a critical issue in shaping the current environmental engineering and protection. Adsorption technique via solid adsorbents has been widely applied for the efficient removal of...
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Categories: Polymer Science News

Crosslinked casein-based micelles as a dually responsive drug delivery system

Mon, 06/04/2018 - 12:16
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00600H, PaperMatias Luis Picchio, Julio Cesar Cuggino, Gregor Nagel, Stefanie Wedepohl, Roque J Minari, Cecilia Ines Alvarez Igarzabal, Luis Marcelino Gugliotta, Marcelo Calderon
New types of biodegradable nanocarriers for drug delivery were prepared using casein (CAS) micelles as particle templates and glyceraldehyde (GAL) as a crosslinking agent. We found that highly crosslinked casein...
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Categories: Polymer Science News

Facile One-Step Fabrication of Sulfonated Polyhedral Oligomeric Silsesquioxane Cross-linked Poly(ether ether ketone) for Proton Exchange Membrane

Mon, 06/04/2018 - 02:11
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00650D, PaperChang Liu, ZhongYing Wu, Yixuan Xu, ShuJiang Zhang, Chenliang Gong, Yiyao Tang, Dewen Sun, Hua Wei, Chunhui Shen
A series of sulfonated polyhedral oligomeric silsesquioxane (POSS) cross-linked poly(ether ether ketone) hybrid membranes (C-PEEK-sPOSS) were facilely synthesized, in which the process of sulfonation and cross-linking were manufactured in one-step....
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Categories: Polymer Science News

Sulfur-rich Covalent Triazine Polymer Nanospheres for Environmental Mercury Removal and Detection

Fri, 06/01/2018 - 08:39
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00419F, PaperYu Fu, Wenguang Yu, Weijie Zhang, Qiao Huang, Jun Yan, Chunyue Pan, Guipeng Yu
We describe a facile one-step synthesis of porous covalent sulfide-bridged polytriazine nanospheres (NOP-28), which can be employed as high-efficient sorbents and the same time selectively sensitive sensors towards trace Hg2+....
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Categories: Polymer Science News

A translation of the structure of mussel byssus threads into synthetic materials by the utilization of histidine-rich block copolymers

Thu, 05/31/2018 - 08:01
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00663F, PaperUlrich Sigmar Schubert, Marcel Enke, Ranjita Bose, Stefan Zechel, Juergen Vitz, Robert Deubler, Felix Helmut Schacher, Santiago J. Garcia, Sybrand van der Zwaag, Martin D. Hager
Mussel byssal threads are well-known due to their self-healing ability after mechanical stress caused by waves. The pro¬posed mechanism demonstrates the importance of reversible histidine-metal interactions as well as the...
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Categories: Polymer Science News

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