Polymer Science News

CO2-Responsive Fluorescent Hyperbranched Poly(ether amine)

RSC - Polym. Chem. latest articles - Mon, 06/19/2017 - 05:55
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00626H, PaperBing Yu, Yue Zhao
A series of anthracene-capped, hyperbranched poly(ether amine)s (hPEA-AN) with varying hydrophilicity were designed and synthesized. Their fluorescence emission intensity in aqueous solution increases after carbon dioxide (CO2) bubbling as a...
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Cell-penetrating poly(disulfide)s-based star polymer for simultaneous intracellular delivery of miRNAs and small molecule drugs

RSC - Polym. Chem. latest articles - Mon, 06/19/2017 - 05:55
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00666G, PaperWenhua Yang, Changmin Yu, Chunxian Wu, Shao Yao, Shuizhu Wu
MicroRNAs (miRNAs) are small regulatory noncoding RNAs that control a variety of biological processes. The regulation of many endogenous miRNAs is tightly associated with various diseases. Thus, the design of...
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Categories: Polymer Science News

PAA-g-PLA Amphiphilic Graft Copolymer: Synthesis, Self-Assembly, and Drug Loading Ability

RSC - Polym. Chem. latest articles - Mon, 06/19/2017 - 05:55
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00762K, PaperWenhao Qian, Tao Song, Mao Ye, Peicheng Xu, Guolin Lu, Xiaoyu Huang
A well-defined amphiphilic graft copolymer comprising hydrophilic poly(acrylic acid) (PAA) backbone and hydrophobic poly(lactic acid) side chains was synthesized by the combination of reversible addition-fragmentation chain transfer (RAFT) polymerization, ring...
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Grafting CO2-responsive polymers from cellulose nanocrystals via nitroxide-mediated polymerisation

RSC - Polym. Chem. latest articles - Mon, 06/19/2017 - 05:55
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00631D, PaperOmar Garcia-Valdez, Tiziana Brescacin, Joaquin Arredondo, Jean Bouchard, Philip Jessop, Pascale Champagne, Michael F. Cunningham
Cellulose nanocrystals (CNC) are a renewable resource possessing extraordinary physical, mechanical, and optical properties. CNC are readily dispersible only in hydrophilic environments, such as aqueous media and very polar solvents....
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Cross-Linkable Multi-Stimuli Responsive Hydrogel Inks for Direct-Write 3D Printing

RSC - Polym. Chem. latest articles - Mon, 06/19/2017 - 05:55
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00831G, PaperDylan Karis, Robert Ono, Musan Zhang, Ankit Vora, Duane Storti, Mark Ganter, Alshakim Nelson
Triple stimuli-responsive ABA triblock copolymer hydrogels composed of poly(allyl glycidyl ether)-stat-poly(alkyl glycidyl ether)-block-poly(ethylene glycol)-block-poly(allyl glycidyl ether)-stat-poly(alkyl glycidyl ether) were synthesized using controlled ring-opening polymerization of glycidyl ethers. These polymers form...
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Polymerization of Alkyl Diazoacetates Initiated with Amidinate/Pd System: Efficient Synthesis of High Molecular Weight Poly(alkoxycarbonylmethylene)s with Moderate Stereoregularity

RSC - Polym. Chem. latest articles - Mon, 06/19/2017 - 04:53
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00816C, PaperHiroaki Shimomoto, Junya Kawamata, Hirokazu Murakami, Kazuki Yamashita, Tomomichi Itoh, Eiji Ihara
Initiating ability of a new system, amidinate/Pd, for polymerization of diazoacetates is described. The system is effective in affording relatively high number-average molecular weight (Mn) polymers from ethyl diazoacetate (EDA,...
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Photo-reversible bonding and cleavage of amphiphilic block copolymers

RSC - Polym. Chem. latest articles - Fri, 06/16/2017 - 10:20
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00843K, PaperSiham Telitel, Eva Blasco, Lukas Bangert, Felix Helmut Schacher, Anja S. Goldmann, Christopher Barner-Kowollik
We introduce the photo-dimerization and - critically - reversible cleavage of amphiphilic block copolymers via reversible [4+4] anthracene cycloadditions at selected wavelengths ([small lambda]1= 350 nm, [small lambda]2 = 270 nm). The...
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Categories: Polymer Science News

Correction: Selenium borohydride reaction as a versatile platform for the straightforward preparation of selenide-containing topological polymers

RSC - Polym. Chem. latest articles - Thu, 06/15/2017 - 09:06
Polym. Chem., 2017, Advance Article
DOI: 10.1039/C7PY90093G, Correction Open Access &nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Chunlai Ding, Caiwei Fan, Xiangqiang Pan, Zhengbiao Zhang, Jian Zhu, Xiulin Zhu
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Categories: Polymer Science News

Design of well-defined shape memory networks with high homogeneity: towards advanced shape memory polymeric materials

RSC - Polym. Chem. latest articles - Thu, 06/15/2017 - 06:05
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00904F, CommunicationXingjian Li, Yi Pan, Jingjuan Lai, Ruiqing Wu, Zhaohui Zheng, Xiaobin Ding
Designing precisely defined network architecture that could integrate desired material properties into one single network is a great challenge for the development of advanced polymeric materials. For thermally induced shape...
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Categories: Polymer Science News

Nitroxide-mediated polymerization-induced self-assembly of amphiphilic block copolymers with a pH/temperature dual sensitive stabilizer block

RSC - Polym. Chem. latest articles - Wed, 06/14/2017 - 09:58
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00595D, PaperXiaoguang Qiao, Pierre-Yves Dugas, Bernadette Charleux, Muriel Lansalot, Elodie Bourgeat-Lami
Comb-like terpolymers with a polymethacrylate backbone, carrying short pendant poly(ethylene)oxide (PEO) side chains (Mn = 300 g mol-1, 5 EO units), carboxylic acid groups and a few styrene (S) units...
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Construction of Flexible and Stable Near-Infrared Absorbing Polymer Films Containing Nickel-Bis(dithiolene) Moieties via Ligand-Exchange Post-Polymerization Modification

RSC - Polym. Chem. latest articles - Wed, 06/14/2017 - 08:57
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00802C, PaperJianhua Han, Zhihuan Weng, Zuoqiang Wu, Jingwen Cai, Jinyan Wang, Xigao Jian
Flexible and stable near-infrared (NIR) absorbing polymer films were prepared from the corresponding poly(aryl ether) precursors through subsequent ligand-exchange post-polymerization modification. The additional ligand triggers the ligand-exchange reaction during the...
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Effect of Conjugation Length and Metal-Backbone Interactions on Charge Transport Properties of Conducting Metallopolymers

RSC - Polym. Chem. latest articles - Tue, 06/13/2017 - 09:46
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00673J, PaperMinh T Nguyen, Richard A Jones, Bradley Holliday
A systematic study on the effect of variation in length of the conjugated organic backbone, and therefore the redox interactions between metal centers and the polymer backbones, of thiophene-based conducting...
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Categories: Polymer Science News

Phosphazene/Triisobutylaluminum Promoted Anionic Ring-Opening Polymerization of 1,2-Epoxybutane Initiated by Secondary Carbamates

RSC - Polym. Chem. latest articles - Tue, 06/13/2017 - 07:44
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00675F, PaperLilia HASSOUNA, Nicolas Illy, Philippe Guegan
Attempts to use carbamate-phosphazene base as initiating systems for the polymerization of 1,2-epoxybutane were unsuccessful. As a matter of fact, carbamate deprotonation by phosphazene bases led to their fast decomposition...
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Ring-Opening Polymerization of Donor-Acceptor Cyclopropanes Catalyzed by Lewis Acids

RSC - Polym. Chem. latest articles - Tue, 06/13/2017 - 07:44
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00794A, PaperKosuke Hayakawa, Shin-ichi Matsuoka, Masato Suzuki
Ring-opening polymerization (ROP) of cyclopropane derivatives catalyzed by Lewis acids has been realized for the first time. In contrast to the conventional radical ROP of dialkyl 2-vinylcyclopropane-1,1-dicarboxylates that proceeds via...
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Categories: Polymer Science News

Grafting Challenging Monomers from Proteins using Aqueous ICAR ATRP under Bio-Relevant Conditions

RSC - Polym. Chem. latest articles - Tue, 06/13/2017 - 06:44
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00669A, PaperDevora Cohen-Karni, Marina Kovaliov, Theresa Ramelot, Dominik Konkolewicz, Scott Graner, Saadyah Averick
Aqueous initiators for continuous activator regeneration atom transfer radical polymerization (ICAR ATRP) was applied to graft well defined acrylamide, N,N-dimethylacrylamide and N-vinylimidazole homo and block copolymers from a model protein...
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Insight into the Polymerization Mechanism of Photoinduced Step Transfer-Addition & Radical-Termination (START) Polymerization

RSC - Polym. Chem. latest articles - Tue, 06/13/2017 - 01:42
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00709D, PaperTianchi Xu, Lifen Zhang, Zhen-Ping Cheng, Xiulin Zhu
Photoinduced step transfer-addition & radical-termination (START) polymerization is a newly developed polymerization strategy for the preparation of perfluorocarbon-containing alternating copolymers and was carried out under irradiation with blue light emitting...
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Categories: Polymer Science News

Tailoring Degree of Esterification and Branching of Poly(glycerol sebacate) by Energy Efficient Microwave Irradiation

RSC - Polym. Chem. latest articles - Mon, 06/12/2017 - 06:34
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00862G, PaperChi Ching Lau, Mustafa Bayazit, Jonathan Knowles, Junwang Tang
Poly(glycerol sebacate) (PGS) is known as an exciting biomaterial owing to its tunable mechanical properties and controllable degradation rate. However, it is always challenging to control these properties. In this...
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Categories: Polymer Science News

Structure/property relationships in copolymers comprising renewable isosorbide, glucarodilactone, and 2,5-bis(hydroxymethyl)furan subunits

RSC - Polym. Chem. latest articles - Mon, 06/12/2017 - 06:34

Polym. Chem., 2017, Advance Article
DOI: 10.1039/C7PY00575J, PaperLeon M. Lillie, William B. Tolman, Theresa M. Reineke
Carbohydrates and their derivatives have great potential as building blocks for the development of renewable materials that are cost and performance competitive with conventional petroleum-based materials.
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Novel wide band gap copolymers featuring excellent comprehensive performance towards practical application for organic solar cells.

RSC - Polym. Chem. latest articles - Mon, 06/12/2017 - 04:33
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00689F, CommunicationDalei Yang, Zelin Li, Zidong Li, Xiaoli Zhao, Tong Zhang, Fan Wu, Yumeng Tian, Feng Ye, Zhaoyan Sun, Xiaoniu Yang
In the past decades, extensive efforts have been devoted to improve the power conversion efficiencies (PCEs) of organic solar cells (OSCs), while its comprehensive performance including high efficiency, fulfilling the...
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Categories: Polymer Science News

A supramolecular polymer network gel with stimuli-responsiveness constructed by orthogonal metal ion coordination and pillar[5]arene-based host-guest recognition

RSC - Polym. Chem. latest articles - Mon, 06/12/2017 - 04:33
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY00656J, CommunicationYuezhou Liu, Liqing Shangguan, Hu Wang, Danyu Xia, Bingbing Shi
A novel external stimuli-responsive supramolecular metallogel was fabricated by orthogonal Ag-coordination and pillar[5]arene-based host-guest molecular recognition.
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