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Ultraviolet light, temperature and pH triply responsive fluorescent sensors based on cellulose nanocrystals

Thu, 05/03/2018 - 05:51
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00613J, PaperWeizhong Yuan, Chunyao Wang, Shize Lei, Jiangdi Chen, Shaorong Lei, Zhihong Li
Novel CNC-g-P(AzoC6MA-co-DMAEMA) fluorescent nanosensor was synthesized by the reaction of atom transfer radical copolymerization (ATRP) of AzoC6MA and DMAEMA with cellulose nanocrystals CNC modified with 2-bromoisobutyryl groups (CNC-Br) as the...
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Categories: Polymer Science News

Ultrafast and Efficient Aza- and Thiol-Michael Reactions on Polyester Scaffold with Internal Electron Deficient Triple Bonds

Wed, 05/02/2018 - 03:02
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00485D, PaperHakan Durmaz, Umit Tunca, Ozgun Daglar, Muge Butun, Ufuk Saim Gunay, Gurkan Hizal
Polyester scaffold possessing electron deficient triple bonds in the main chain was prepared and utilized as a precursor for aza- and thiol-Michael addition reactions. A variety of primary and secondary...
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Categories: Polymer Science News

Design and Synthesis of AIE-active Polymeric H2S-donor with Capacity for Self-tracking

Tue, 05/01/2018 - 21:59
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00548F, PaperLvhuan Lin, Herong Qin, Jianbing Huang, Hui Liang, Daping Quan, Jiang Lu
Design and synthesis of a new type of self-fluorescent polymeric H2S-donor was reported for the first time. Reversible addition-fragmentation chain transfer (RAFT) polymerization of 3-formyl-4-hydroxybenzyl methacrylate (FHMA) afforded a structurally...
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Categories: Polymer Science News

Correction: Photothermal Mobius aromatic metallapentalenofuran and its NIR-responsive copolymer

Tue, 05/01/2018 - 06:46
Polym. Chem., 2018, Advance Article
DOI: 10.1039/C8PY90068J, Correction Open Access &nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Zhengyu Lu, Yuanting Cai, Yuanqing Wei, Qin Lin, Jiangxi Chen, Xumin He, Shunhua Li, Weitai Wu, Haiping Xia
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Categories: Polymer Science News

Hydrogen-transfer and condensation-addition polymerizations of acrylic acid

Tue, 05/01/2018 - 04:44
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00271A, PaperTakuya Murase, Shin-ichi Matsuoka, Masato Suzuki
The hydrogen-transfer and condensation-addition polymerizations of acrylic acid (AA) to synthesize aliphatic polyesters have been investigated. We first performed catalyst screening for the hydrogen-transfer polymerization of AA and found that...
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Categories: Polymer Science News

Rational Designed Hyperbranched Azopolymer with Temperature, Photo and pH Responsive Behavior

Mon, 04/30/2018 - 11:26
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00472B, PaperLiuying Sun, Fei Gao, Dingfeng Shen, Zhenghui Liu, Yuan Yao, Shaoliang Lin
A new azobenzene containing hyperbranched polymer, HPAzoAMAM-star-EG3, was efficiently synthesized through two-step Michael addition polymerization. The proposed polymer could self-assemble into uniform large compound micelles (LCMs) that featuring temperature, photo...
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Categories: Polymer Science News

Polypeptide gels incorporating the exotic functional aromatic amino acid 4-amino-L-phenylalanine

Mon, 04/30/2018 - 10:26
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00427G, PaperTatsuo Kaneko, Mohammad Asif Ali, Ilya Captain, Pesach Perlin, Timothy J Deming
High-molecular-weight polypeptides with functional aromatic side chains, poly(4-amino-L-phenylalanine), 4APhe, were prepared by metal-initiated polymerization of the N[small alpha]-carboxyanhydride of the corresponding amino acid, which is a microbial derivative of phenylalanine. The...
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Categories: Polymer Science News

Frontiers of Macromolecular and Supramolecular Science symposia

Mon, 04/30/2018 - 09:25

Polym. Chem., 2018, Advance Article
DOI: 10.1039/C8PY90063A, EditorialMichael L. Klein, Virgil Percec
Michael L. Klein and Virgil Percec introduce this Polymer Chemistry themed collection containing a selection of publications contributed by lecturers from the Frontiers of Macromolecular and Supramolecular Science symposia and friends of Christofor I. Simionescu.
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Categories: Polymer Science News

pH-responsive diblock copolymers with two different fluorescent labels for simultaneous monitoring of micellar self-assembly and degree of protonation

Mon, 04/30/2018 - 08:25
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00111A, PaperPeter Jeppe Madsen, George Madden, Efrosyni Themistou, Nicholas J Warren, Steven P Armes
We report the synthesis of a novel amphiphilic pH-responsive diblock copolymer labeled with two different fluorophores. This copolymer comprises a water-soluble poly(glycerol monomethacrylate) [PGMA] block and a pH-responsive poly(2-(diisopropylamino)ethyl methacrylate)...
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Categories: Polymer Science News

Light-Induced Evolution of Microaggregates: Transformation to Vesicles, Cyclic Growth and Collapse and Vesicle Fusion

Fri, 04/27/2018 - 12:42
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00546J, CommunicationKaixuan Ren, Juan Perez-Mercader
A kind of microaggregates was synthesized in one-pot via polymerization-induced self-assembly (PISA). By giving a source of energy (visible light) in the absence or presence of fluorescent molecules, these self-assembled...
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Categories: Polymer Science News

Facile preparation of aliphatic main-chain benzoxazine copolymers with high-frequency low dielectric constants

Fri, 04/27/2018 - 08:39
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00407B, PaperMing Zeng, Jiangbing Chen, Qingyu Xu, Yiwan Huang, Zijian Feng, Yi Gu
The designed aliphatic main-chain benzoxazine copolymer oligomers are synthesized by the Mannich reaction. It should be noted that increasing the ratio and polarity of polar solvent is an effective strategy...
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Categories: Polymer Science News

Controlled synthesis of ortho, para-alternating linked polyarenes via Catalyst-Transfer Suzuki coupling polymerization

Fri, 04/27/2018 - 04:26
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00070K, CommunicationHonghai Zhang, Yu-Xing Zhu, Weiyu Wang, Jiahua Zhu, Peter Bonnesen, Kunlun Hong
A novel class of ortho, para-alternating linked polyarenes is synthesized via catalyst-transfer Suzuki coupling polymerization with Pd2(dba)3/t-Bu3P/p-BrC6H4COPh as initiator. Through a series of kinetic studies and MALDI-TOF analysis, the polymerization...
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Categories: Polymer Science News

Processable poly(benzoxazole imide)s derived from asymmetric benzoxazole diamines containing 4-phenoxy aniline: synthesis, properties and the isomeric effect

Wed, 04/25/2018 - 11:56

Polym. Chem., 2018, Advance Article
DOI: 10.1039/C8PY00382C, PaperLala Rukh Sidra, Guofei Chen, Nafeesa Mushtaq, Kai Ma, Beenish Bashir, Xingzhong Fang
A novel series of poly(benzoxazole imide)s are synthesized using asymmetric benzoxazole monomers in an attempt to enhance solution and melt processability.
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Categories: Polymer Science News

Anionic polymerization of activated oxetane and its copolymerization with ethylene oxide for the synthesis of amphiphilic block copolymers

Wed, 04/25/2018 - 10:55

Polym. Chem., 2018, Advance Article
DOI: 10.1039/C8PY00307F, PaperMatthieu Gervais, Antoine Forens, Emmanuel Ibarboure, Stephane Carlotti
The anionic polymerization of oxetane in toluene was achieved using a combination of tetraoctylammonium bromide and simple triisobutylaluminum. By its copolymerization with ethylene oxide, di- and triblock copolymers were prepared in one and two steps respectively.
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Categories: Polymer Science News

Recent advances in alkyne-based click polymerizations

Wed, 04/25/2018 - 07:51
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C7PY02047C, MinireviewDie Huang, Yong Liu, Anjun Qin, Ben Zhong Tang
Click chemistry, with remarkable advantages such as high efficiency, atom economy, mild reaction conditions, very high yield, regio- and/or stereoselectivity, and good functionality tolerance, has been nurtured into a powerful...
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Categories: Polymer Science News

Preparation of Biorenewable Poly([gamma]-butyrolactone)-b-poly(L-lactide) Diblock Copolyesters via One-pot Sequential Metal-free Ring-Opening Polymerization

Tue, 04/24/2018 - 02:23
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00389K, Paperyong shen, Jinbo Zhang, Na Zhao, Fusheng Liu, Zhibo Li
The preparation of block copolymers containing poly([gamma]-butyrolactone) block remains as a synthetic challenge owing to the unfavorable thermodynamics towards the ring-opening polymerization (ROP) of "non-strain" five-membered ring, which makes it...
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Categories: Polymer Science News

Polymerization-induced self-assembly of Large-scale iohexol nanoparticles as contrast agents for X‑ray Computed Tomography Imaging

Tue, 04/24/2018 - 00:22
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00192H, PaperYuxun Ding, Xinyu Zhang, Yingjin Xu, Tangjian Cheng, Hanlin Ou, Zhanyong Li, Yingli An, Wenzeng Shen, Yang Liu, Linqi Shi
X-ray computed tomography (CT) is one of the most useful imaging technologies on clinic. To increase the sensitivity of CT, iodinated compounds are used as injectable contrast agents. Unfortunately, the...
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Categories: Polymer Science News

Biomimetic antimicrobial polymers: recent advances in molecular design

Mon, 04/23/2018 - 12:13

Polym. Chem., 2018, Advance Article
DOI: 10.1039/C8PY00012C, Review Article Open Access &nbsp This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.Cansu Ergene, Kazuma Yasuhara, Edmund F. Palermo
The increasing prevalence of antibiotic-resistant bacterial infections, coupled with the decline in the number of new antibiotic drug approvals, has created a therapeutic gap that portends an emergent public health crisis.
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Categories: Polymer Science News

Redox-Triggered Hydrogels Revealing Switchable Stiffness Properties and Shape-Memory Functions

Mon, 04/23/2018 - 12:13
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00515J, PaperMichael Fadeev, Gilad Davidson-Rozenfeld, Yonatan Biniuri, Ravit Yakobi, Remi Cazelles, Miguel Angel Aleman Garcia, Itamar Willner
The synthesis, characterization and application of redox-switchable hydrogels are described. One system includes the crosslinking of terpyridine-functionalized acrylamide copolymer chains by redox-active metal-ion terpyridine complexes (Mn/n+1 = Ru2+/3+; Os2+/3+). The...
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Categories: Polymer Science News

Controllable Fabrication of the Novel pH-, Thermo-, and Light-Responsive Supramolecular Dendronized Copolymers with Dual Self-Assembly Behavior

Mon, 04/23/2018 - 06:10
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00448J, PaperChangan Yang, Ling Chen, He Huang, Tuo Ji, YingXiang Jiang, Congshan Zhou, Xiaobo Chen
Novel tri-stimulus responsive supramolecular dendronized copolymers are prepared through self-assembly of imine bonds, exhibiting fast and fully reversible phase transitions and trans-cis isomerization in alkaline solutions. The lower critical solution...
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Categories: Polymer Science News

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