Polymer Science News

Synthesis and bio-conjugation of first alkynylated poly(dithieno[3,2-b:2',3'-d]pyrrole)s

RSC - Polym. Chem. latest articles - Mon, 11/06/2017 - 03:08
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01528C, CommunicationSylvia Schmid, Jasmina Gacanin, Yuzhou Wu, Tanja Weil, Peter Baeuerle
The efficient synthesis of an alkynylated dithieno[3,2-b:2',3'-d]pyrrole (DTP) monomer was developed, which allows electrochemical polymerization on Platinum and indium tin oxide (ITO) electrodes. The DTP-based polymeric surfaces p(DTP) were successfully...
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Categories: Polymer Science News

Self-Assembly of PEG/Dodecyl-Graft Amphiphilic Copolymers in Water: Consequence of Monomer Sequence and Chain Flexibility for Uniform Micelles

RSC - Polym. Chem. latest articles - Mon, 11/06/2017 - 02:06
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01719G, PaperGoki Hattori, Yuji Hirai, Mistuo Sawamato, Takaya Terashima
Self-assembly of hydrophilic poly(ethylene glycol) (PEG) and hydrophobic dodecyl-graft amphiphilic copolymers in water was investigated in detail, especially focused on the effects of monomer sequence and chain flexibility on the...
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Categories: Polymer Science News

Pillar[5]arene-Based Chiral 3D Polymer Network for Heterogeneous Asymmetric Catalysis

RSC - Polym. Chem. latest articles - Mon, 11/06/2017 - 02:06
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01669G, CommunicationHuangtianzhi Zhu, Bingbing Shi, Lina Gao, Yuezhou Liu, Pei-Ren Liu, Liqing Shangguan, Zhengwei Mao, Feihe Huang
Fabricating new heterogeneous asymmetric catalysts with high activity and good recyclability benefits both pharmaceutical and chemical studies. Here we report a novel chiral 3D polymer network constructed by pillar[5]arene and...
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Categories: Polymer Science News

Water-Soluble Fullerene-Functionalized Polymer Micelles for Efficient Aqueous-Processed Conductive Devices

RSC - Polym. Chem. latest articles - Mon, 11/06/2017 - 02:06
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01743J, PaperChih-Chia Cheng, Wei-Ling Lin, Zhi-Sheng Liao, chih wei Chu, Jyun-Jie Huang, Shan-You Huang, Wen-Lu Fan, D. J. Lee
This study represents an important discovery that employs donor-acceptor (D-A) energy transfer-based strategies to construct water-soluble hybrid micelles with hydrophilic sodium ion-functionalized polythiophene (PTA-Na) as a donor and hydrophobic fullerene...
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Co-delivery of doxorubicin and methotrexate by dendritic chitosan-g-mPEG as a magnetic nanocarrier for multi-drugs delivery in combination chemotherapy

RSC - Polym. Chem. latest articles - Fri, 11/03/2017 - 11:55
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01701D, PaperMahdi Rahimi, Kazem D. Safa, Roya Salehi
Nanoparticulate drug delivery systems offer to improve the therapeutic efficacy of anticancer agents in clinical cancer treatment. Besides, combination therapy has become as a promising strategy for clinical cancer treatment...
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Categories: Polymer Science News

RAFT synthesis and micellization of a photo-, temperature- and pH-responsive diblock copolymer based on spiropyran

RSC - Polym. Chem. latest articles - Fri, 11/03/2017 - 05:33
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01714F, PaperYuan Zhang, Mengjiao Cao, Bing Yuan, Tianying Guo, Wangqing Zhang
A photo-, temperature- and pH-responsive diblock copolymer of poly(2-spiropyranpropyl methacrylate)-b-poly(N-isopropylacrylamide) (PSPPMA-b-PNIPAM) containing a solvophobic photo- and pH-responsive block of PSPPMA and a thermoresponsive PNIPAM block is synthesized by RAFT polymerization....
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Categories: Polymer Science News

The Effect of Pendant Group Structure on the Thermoresponsive Properties of N-Substituted Polyesters

RSC - Polym. Chem. latest articles - Fri, 11/03/2017 - 05:33
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01391D, PaperJohn P Swanson, Megan Cruz, Leanna Monteleone, Michael Martinez, Philip Costanzo, Abraham Joy
Synthetic polymers exhibiting reversible lower critical solution temperature (LCST), such as poly(N-isopropylacrylamide) (PNIPAM), are intriguing materials with various potential applications. We recently developed a new class of biodegradable thermoresponsive polyesters...
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Categories: Polymer Science News

Photosensitive Poly(o-nitrobenzyloxycarbonyl-L-lysine)-b-PEO Polypeptide Copolymers: Synthesis, Multiple Self-Assembly Behaviors, and the Photo/pH-Thermo-Sensitive Hydrogels

RSC - Polym. Chem. latest articles - Thu, 11/02/2017 - 06:03
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01574G, PaperPan Li, Jiacheng Zhang, Chang-Ming Dong
Photoresponsive poly(o-nitrobenzyloxycarbonyl-L-lysine)-b-PEO (PNBL-b-PEO) polypeptide copolymer was synthesized and its photosensitive cleavage and self-assembly was monitored by means of UV-vis spectroscopy, 1H NMR, DLS, and TEM. Three kinds of dual-sensitive (i.e.,...
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Synthesis, Characterization and Paramagnetic Property of Bottle-Brush Copolymers with Shielding TEMPO Radicals

RSC - Polym. Chem. latest articles - Thu, 11/02/2017 - 06:03
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01683B, PaperJian Wang, Zhi Gang Wu, Hongying Shen, Guowei Wang
Bottle-brush copolymers Poly(2-hydroxyethyl methacrylate)(PHEMA)-g-{[(Poly(acrylic acid)-g-2,2,6,6-tetramethylpiperidine-1-oxyl]-b-Poly(methyl acrylate)} (PHEMA-g-[(PAA-g-TEMPO)-b-PMA]) and PHEMA-g-(PAA-g-TEMPO) with shielding 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) radicals were synthesized, and their paramagnetic property was compared in bulk and solution, respectively. Firstly, using a...
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Categories: Polymer Science News

Synthesis and self-assembly of a dual-responsive monocleavable ABCD star quaterpolymer

RSC - Polym. Chem. latest articles - Wed, 11/01/2017 - 07:41

Polym. Chem., 2017, Advance Article
DOI: 10.1039/C7PY01638G, PaperHuanhuan Liu, Jian Zhang, Wenxue Dai, Youliang Zhao
A modularly synthesized core-functionalized PEG-PSt-PCL-PAA miktoarm star can self-assemble into hollow nanocapsules that are sensitive to pH/redox stimuli and H-bond/polyion complexation.
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Categories: Polymer Science News

Rapid synthesis of well-defined all-acrylic diblock copolymer nano-objects via alcoholic photoinitiated polymerization-induced self-assembly (photo-PISA)

RSC - Polym. Chem. latest articles - Wed, 11/01/2017 - 06:40

Polym. Chem., 2017, Advance Article
DOI: 10.1039/C7PY01652B, PaperJianbo Tan, Jun He, Xueliang Li, Qin Xu, Chundong Huang, Dongdong Liu, Li Zhang
A series of well-defined all-acrylic poly(hydroxyethyl acrylate)-poly(isobornyl acrylate) (PHEA-PIBOA) diblock copolymer nano-objects were prepared by photoinitiated polymerization-induced self-assembly (photo-PISA).
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Categories: Polymer Science News

Enzymatically Crosslinked Hydrogels based on Linear Poly(ethylene glycol) Polymer: Performance and Mechanism

RSC - Polym. Chem. latest articles - Wed, 11/01/2017 - 05:39
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01597F, PaperKaixuan Ren, Bin Li, Qinghua Xu, Chunsheng Xiao, Chaoliang He, Gao Li, Xuesi Chen
In the present work, a horseradish peroxidase (HRP)-catalyzed hydrogel based on a double-end tyramine conjugated linear poly (ethylene glycol) (TA-PEG-TA) polymer, is developed in the present work. The TA-PEG-TA is...
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Categories: Polymer Science News

Immobilized Photocatalyst on Fibrous and Porous Monolithic Cellulose for Heterogeneous Catalysis of Controlled Radical Polymerization

RSC - Polym. Chem. latest articles - Tue, 10/31/2017 - 11:16
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01690E, PaperJiangtao Xu, Yingying Chu, Zixuan Huang, Kang Liang, Jia Guo, Cyrille Boyer
Natural fibrous cellulose (cotton) and household porous cellulose (sponge) as supporting monolithic materials were employed for the immobilization of a photoredox catalyst to prepare unique heterogeneous catalyst composites, which were...
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Categories: Polymer Science News

Self-Assembly and Multi-Stimuli Responsive Behavior of PAA-b-PAzoMA-b-PNIPAM Triblock Copolymers

RSC - Polym. Chem. latest articles - Tue, 10/31/2017 - 07:11
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01591G, PaperFei Gao, Yaohui Xing, Yuan Yao, Liuying Sun, Yao Sun, Xiaohua He, Shaoliang Lin
In this work, a triblock copolymer poly(acrylic acid)-block-poly[6-(4-methoxy-azobenzene-4'-oxy) hexylmethacrylate]-block-poly(N-isopropylacrylamide) (PAA-b-PAzoMA-b-PNIPAM) containing pH, photo and temperature sensitive groups was synthesized through three-step RAFT polymerization. By tuning solvents, the copolymer could self-assemble...
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Categories: Polymer Science News

Squaramide and amine binary H-bond organocatalysis in polymerizations of cyclic carbonates, lactones, and lactide

RSC - Polym. Chem. latest articles - Tue, 10/31/2017 - 07:11
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01671A, PaperJingjing Liu, Jiaxi Xu, Zhenjiang Li, Songquan Xu, Xin Wang, Haixin Wang, Tianfo Guo, Yu Gao, Lei Zhang, Kai Guo
Multiple combinations of six squaramides (Sq) and eight amines were tried as the co-catalysts in ring-opening polymerizations (ROPs) of cyclic carbonates, lactones, and lactide. Sq and sparteine co-catalysts enabled ROPs...
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Probing the first steps of photoinduced free radical polymerization at water-oil interfaces

RSC - Polym. Chem. latest articles - Tue, 10/31/2017 - 06:10
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01414G, CommunicationDenisa Darvasiova, Zuzana Zarbierikova, Anna Eibel, Max Schmallegger, Georg Gescheidt, Michal Zalibera, Dmytro Neshchadin
Phosphanoyl radicals, produced by [small alpha]-photocleavage of exclusively octane-soluble acylphosphane oxides, rapidly react with both water- and octane-soluble monomers in water-in-octane microemulsions. The presented mechanistic insights open the possibility for tailored...
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Categories: Polymer Science News

Reduction-Responsive Dithiomaleimide-Based Polymeric Micelles for Controlled Anti-Cancer Drug Delivery and Bioimaging

RSC - Polym. Chem. latest articles - Mon, 10/30/2017 - 11:46
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01675A, PaperTing Bai, Junjie Du, Jianxin Chen, Xiao Duan, Qiang Zhuang, Heng Chen, Jie Kong
Drug delivery systems integrated with dual- or multi-functionalities of stimuli-responsible, targeted and controlled release, and bioimaging are favorable in improving the efficiency of chemotherapy. In this study, the amphiphilic block...
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Categories: Polymer Science News

Control of the alignment of liquid crystal molecules on a sequence-polymerized film by surface migration and polarized light irradiation

RSC - Polym. Chem. latest articles - Mon, 10/30/2017 - 08:43
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01576C, PaperFeng Cai, Feng zheng, Xuemin Lu, Qinghua Lu
Alignment of liquid crystals (LCs) is the key technology in LC displays, molecular switches and optical systems. Azobenzene (azo) molecules are often incorporated into LC alignment polymer films to make...
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Categories: Polymer Science News

A Nonconjugated macromolecular luminogen for speedy, selective and sensitive detection of picric acid in water

RSC - Polym. Chem. latest articles - Mon, 10/30/2017 - 07:42
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01579H, PaperKamal Bauri, Biswajit Saha, Jnansankar Mahanti , Priyadarsi De
Development of speedy, selective and sensitive detection of picric acid (PA) in aqueous medium using simple, cost-effective and portable sensory technique is in high demand not only because of PA's...
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Categories: Polymer Science News

Synthesis and chiroptical properties of helical polystyrenes stabilized by intramolecular hydrogen bonding

RSC - Polym. Chem. latest articles - Mon, 10/30/2017 - 07:42
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01633F, PaperNa Liu, Rui-Wen Sun, Hao-Jun Lu, Xueliang Li, Chun-Hua Liu, Zong-Quan Wu
Two novel enantiopure styrene derivatives (L- and D-1) bearing chiral amide groups were designed and synthesized. Polymerization of these monomers using reversible addition fragment transfer (RAFT) radical polymerization afforded a...
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Categories: Polymer Science News

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