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Periodic Polymers Based on Self-Accelerating Click Reaction

Tue, 07/03/2018 - 04:58
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00645H, PaperLue Xiang, Zi Li, Jianan Liu, Jiqiang Chen, Minghui Zhang, Ying Wu, Ke Zhang
The self-accelerating double-strain-promoted azide-alkyne cycloadditon reaction (DSPAAC) was employed for the formation of periodic polymers with ultrahigh molecular weight or cyclic topology. The DSPAAC-based stoichiometric imbalance-promoted step-growth polymerization was introduced...
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Categories: Polymer Science News

Highly efficient luminescent side-chain polymers with short-spacer attached tetraphenylethylene AIEgens via RAFT polymerization capable of naked eye explosive detection

Mon, 07/02/2018 - 07:36
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00710A, PaperQian Li, Xiao Li, Zhongying Wu, Yuhao Sun, Jianglin Fang, Dongzhong Chen
Tetraphenylethylene (TPE) is one of the well-known typical aggregation-induced emission (AIE) luminogens (AIEgens), TPE-containing polymers possess excellent processing properties facilitating the fabrication of various AIE systems and devices. For AIE...
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Categories: Polymer Science News

Polymerization-induced self-assembly of liquid crystalline ABC triblock copolymers with long solvophilic chain

Sat, 06/30/2018 - 06:15
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00643A, PaperMeng Huo, Zhengyi Wan, Min Zeng, Yen Wei, Jinying Yuan
Understanding the self-assembly of liquid crystalline (LC) block copolymers is challenging, because of the complex influencing factors. In this article, we studied the influence of the solvophilic chain length on...
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Categories: Polymer Science News

Pure-color and dual-color emission from BODIPY homopolymers containing the cardo boron structure

Fri, 06/29/2018 - 08:52

Polym. Chem., 2018, Advance Article
DOI: 10.1039/C8PY00619A, PaperHonami Yamane, Kazuo Tanaka, Yoshiki Chujo
Pure-color and dual-color emission were accomplished with homopolymers composed of modified boron dipyrromethene involving cardo boron.
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Categories: Polymer Science News

Hydrogels with novel hydrolytically-labile trehalose-based crosslinks: small changes - big differences in degradation behavior

Wed, 06/27/2018 - 07:12
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00488A, CommunicationIlona Wandzik, Malgorzata Burek, Sylwia Waskiewicz, Anna Lalik
Novel crosslinkers based on trehalose diacetals with acryloyloxy functionalities were synthesized and applied to the fabrication of degradable hydrogels with pH-dependent degradation characteristics at around physiological pH. Degradability at pH...
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Categories: Polymer Science News

Synthesis of novel guanidine-based ABA triblock copolymers and their antimicrobial honeycomb films

Tue, 06/26/2018 - 02:25
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00732B, PaperHao Zhang, Yanna Liu, Ting Luo, Qiaoling Zhao, Kun Cui, Jin Huang, Tao Jiang, Zhi Ma
Novel amphiphilic poly(methacryl guanidine hydrochloride)-block-polystyrene-block-poly(methacryl guanidine hydrochloride) (PMAGH-b-PS-b-PMAGH) ABA triblock copolymers with controlled molecular weight and composition were synthesized via sequential reversible addition/fragmentation chain transfer (RAFT) polymerization of methacryl guanidine...
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Categories: Polymer Science News

A crown-ether-based moldable supramolecular gel with unusual mechanical properties and controllable electrical conductivity prepared by cation-mediated cross-linking

Mon, 06/25/2018 - 23:22
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00644J, PaperJaehyeon Park, Ka Young Kim, Chaelin Kim, Ji Ha Lee, Ju Hyun Kim, Shim Sung Lee, Yeonweon Choi, Jong Hwa Jung
Typical supramolecular gels do not exhibit electrical conductivity because of the wide band gaps present in the low-conjugation gelator molecules and the long distances between them, which arise because of...
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Categories: Polymer Science News

Open-cage silsesquioxane necklace polymers having closed-cage silsesquioxane pendants

Mon, 06/25/2018 - 21:18
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00758F, CommunicationHiroaki Imoto, Ryoichi Katoh, Kensuke Naka
Polyhedral oligomeric silsesquioxane (POSS) is a promising building block for organic-inorganic hybrid materials. However, polymers containing POSS units in the main chains have been hardly studied because synthesis of bifunctional...
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Categories: Polymer Science News

Stability of Diels-Alder Photoadducts in Macromolecules

Mon, 06/25/2018 - 07:06
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00748A, CommunicationCharlotte Petit, Lukas Bangert, Mahdi Abbasi, Manfred Wilhelm, Anja S. Goldmann, Christopher Barner-Kowollik
We explore the stability of o-quinodimethane-based ligation points generated by a popular photo-induced Diels-Alder reaction, assessing their ability to withstand challenging environments. Our molecular assessment includes size-exclusion chromatography as well...
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Categories: Polymer Science News

Disulphide Crosslinked Star Block Copolypeptide Hydrogels: Influence of Block Sequence Order on Hydrogel Properties

Mon, 06/25/2018 - 04:02
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00741A, PaperRobert Murphy, Marc in het Panhuis, Sally-Ann Cryan, Andreas Heise
Reported are a series of 32- and 64-arm star shaped diblock copolypeptides containing opposite block sequences of oligo(cysteine) and poly(lysine) resulting in hydrogels comprising core and shell mediated disulfide crosslinking....
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Categories: Polymer Science News

Novel applications of fluorescent brighteners in aqueous visible-light photopolymerizations: high performance water-based coating and LED-assisted hydrogel synthesis

Mon, 06/25/2018 - 04:02
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00584B, PaperJacques Lalevee, Jean-Philippe Goddard, Nicolas Blanchard, Fabrice Morlet-Savary, Didier Le Nouen, Xiaoling Zuo, Michael Schmitt
Commercial fluorescent brighteners (styrene-based, coumarine-based and 2,5-bis(benzoxazolyl)thiophene-based derivatives) are shown to be active photoinitiator in the aqueous visible-light photopolymerizations. The proposed systems are characterized by: i) a low intensity visible-light...
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Categories: Polymer Science News

CuAAC click chemistry: a versatile approach towards PVDF-based block copolymers

Mon, 06/25/2018 - 03:02
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00742J, CommunicationKatja Loos, Ivan Terzic, Niels Meereboer
Alkyne/azide end terminated PVDF homopolymers were synthesized via free-radical polymerization using functional benzoyl peroxides as initiators. This approach allows the preparation of various PVDF triblock copolymers with an interesting crystallization...
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Categories: Polymer Science News

ROS-responsive poly(ε-caprolactone) with pendent thioether and selenide motifs

Wed, 06/20/2018 - 23:56
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00620B, PaperLi Yu, Mei Zhang, Fusheng Du, Zichen Li
The chalcogen-containing polyesters represent an important branch of reactive oxygen species (ROS)-responsive biodegradable polymers. Herein, we report the synthesis and oxidation properties of three ROS-responsive poly(ε-caprolactone) (PCL)-type polyesters. Three new...
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Categories: Polymer Science News

Synthesis of Aromatic-doped Polycaprolactone with Tunable Degradation Behavior

Wed, 06/20/2018 - 09:42
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00374B, PaperYawei Sun, Qiuyan Wang, Shuying Zhang, Hao Li, Jinli Zhang, Daqing Li, Wei Li
A novel aromatic-doped polycaprolactone (Aro-PCL) was synthesized through a facile PCL aminolysis-condensation polymerization, and assessed focusing on the dynamic aggregation and crystalline microdomains associated with the in vitro degradation property,...
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Categories: Polymer Science News

Kinetics of Radical Copolymerization of Vinylidene fluoride with tert-butyl 2-trifluoromethyl Acrylate: A Suitable Pair for the Synthesis of Alternating Fluorinated Copolymers

Wed, 06/20/2018 - 06:35
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00681D, PaperPanagiotis Falireas, Mohammad Wehbi, Alikassem Alaaeddine, Bruno Ameduri
The kinetics of radical copolymerization of vinylidene fluoride (VDF) with tert-butyl 2-trifluoromethacrylate (MAF-TBE) initiated by tert-butyl peroxypivalate in solution is presented. The evolutions of the microstructure and molecular weights of...
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Categories: Polymer Science News

A 1,2,3-triazolyl based conjugated microporous polymer for sensitive detection of p-nitroaniline and Au nanoparticles deposition

Wed, 06/20/2018 - 03:32
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00702K, PaperFeng Wei, Xinyi Cai, Junqi Nie, Feiyi Wang, Cuifen Lu, Guichun Yang, Zuxing Chen, Chao Ma, Yuexing Zhang
A 1,2,3-triazolyl based fluorescent conjugated microporous polymer PTPTB was synthesized through FeCl3 promoted oxidative coupling of 1,3,5-tris(1-(3,5-di(thiophen-2-yl)phenyl)-1H-1,2,3-triazol-4-yl)benzene. The resulting product have a BET surface area of 808.6 m2 g-1 and...
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Categories: Polymer Science News

Unraveling the Stress Effects on Optical Properties of Stretchable Rod-Coil Polyfluorene-Poly(n-butyl acrylate) Block Copolymer Thin Films

Wed, 06/20/2018 - 01:31
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00763B, PaperHui-Ching Hsieh, Chih-Chien Hung, Kodai Watanabe, Jung-Yao Chen, Yu-Cheng Chiu, Takuya Isono, Yun-Chi Chiang, Renji R. Reghu, Toshifumi Satoh, Wen-Chang Chen
We report the synthesis, morphology, and photophysical properties of new conjugated rod-coil block copolymers consisting of poly[2,7-(9,9-dihexylfluorene)] (PF) conjugated rods and soft poly(n-butyl acrylate) (PBA) coils for stretchable light-emitting device...
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Categories: Polymer Science News

Post-Synthetic Functionalization of a Polysulfone Scaffold with Hydrazone-Linked Functionality

Tue, 06/19/2018 - 14:22
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00631H, PaperDylan W Domaille, Dillon Love, Xilal Rima, Albert Harguindey-Sanchez, Benjamin Fairbanks, David Klug, Jennifer N Cha, Christopher N Bowman
The synthesis, characterization, and post-synthetic functionalization of a readily functionalized step-growth linear polymer derived from divinyl sulfone (DVS) and tert-butylcarbazate (TBC) is presented. Construction of this atom-economic polymer under thermal...
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Categories: Polymer Science News

Investigation of Green and Sustainable Solvents for Direct Arylation Polymerization (DArP)

Tue, 06/19/2018 - 12:19
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00749G, PaperRobert Pankow, Liwei Ye, Nemal Gobalasingham, Neda Salami, Sanket Samal, Barry Thompson
Direct arylation polymerization (DArP) is an emerging method for conjugated polymer synthesis. It alleviates typical synthetic routes from toxic, hazardous materials, such as pyrophorphoric organolithium or highly-toxic stannane reagents. The...
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Categories: Polymer Science News

Light-Mediated One-Pot Synthesis of ABC Triblock Copolymer in Aqueous Solution via RAFT and the Effect of pH on Copolymer Self-Assembly

Mon, 06/18/2018 - 09:55
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00775F, PaperSudhina Guragain, Juan Perez-Mercader
A diblock copolymer showing pH-dependent water solubility is chain extended with hydrophobic third block to get ABC type amphiphilic triblock copolymer of poly(ethylene oxide-b-2-(dimethylamino)ethyl methacrylate-b-2-hydroxypropyl methacrylate). The block copolymer synthesis...
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Categories: Polymer Science News

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