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Concentration-directed morphological evolution of boronate ester-based dynamic covalent nanoparticles: a facile approach for size and shape control

2 hours 12 min ago

Polym. Chem., 2018, Advance Article
DOI: 10.1039/C7PY02021J, CommunicationFuli Zhao, Anjie Dong, Jinfeng Ma, Liandong Deng, Jianhua Zhang
Precursor concentrations dictated the formation processes of dynamic boronate nanoparticles, thus providing a facile route for morphological and size manipulation.
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Categories: Polymer Science News

Synthesis of poly(ionic liquid)-based nano-objects with morphological transitions via RAFT polymerization-induced self-assembly in ethanol

Mon, 01/22/2018 - 23:27
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00040A, CommunicationYongqi Yang, jinwen Zheng, shou kuo man, Xiaolan Sun, Zesheng An
There has been few reports on polymerization-induced self-assembly of poly(ionic liquid)-based block copolymers, with limited access to higher-order morphologies. Herein a full range of morphologies including spheres, worms, and vesicles...
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Categories: Polymer Science News

N-[2-(dimethylamino)ethyl]-1,8-naphthalimide Derivatives as Photoinitiators under LEDs

Sun, 01/21/2018 - 23:11
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00055G, PaperJacques Lalevee, Didier Gigmes, Frederic Dumur, Bernadette Graff, Jean Pierre Fouassier, Pu Xiao, Jing Zhang, Nicolas Zivic
Four N-[2-(dimethylamino)ethyl]-1,8-naphthalimide derivatives (ANNs) with different substituents (bromo group, primary amine, secondary amine, and tertiary amine) in the naphthalimide skeleton have been synthesized and can be used as one-component free...
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Categories: Polymer Science News

pH-Responsive polymer based on dynamic imine bonds as a drug delivery material with pseudo target release behavior

Fri, 01/19/2018 - 03:57
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C7PY02108A, PaperYangchun Tao, Siwei Liu, Yi Zhang, Zhenguo Chi, Jiarui Xu
In this study, pentaerythritol tetra(3-mercaptopropionate)-allylurea-poly (ethylene glycol) (PETMP-AU-PEG), produced by the Schiff-base reaction between terminal-aldehyded PEG and PETMP-AU, was used to prepare doxorubicin (DOX)-loaded polymers for triggered release. The DOX-loaded...
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Categories: Polymer Science News

Dual-responsive biocompatible microgels as high loaded cargo: Understanding of encapsulation/release driving forces by NMR NOESY

Fri, 01/19/2018 - 00:47
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C7PY02111A, PaperGarbine Aguirre, Abdel Khoukh, Kamel Chougrani, Valerie ALARD, Laurent Billon
Herein, cosmetic active molecules controlled encapsulation and release from multi-responsive oligo(ethylene glycol)-based biocompatible microgels are reported. The pH-responsiveness and pH-sensitive thermal-behavior of the microgel synthesized in different cosmetic buffered media...
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Categories: Polymer Science News

A One-Pot Strategy to Improve End-Capping Efficacy in Stille Poly-condensations

Thu, 01/18/2018 - 21:43
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C7PY01761H, PaperJared Harris, Kenneth R. Carter
Herein we examine the end-capping efficacy of several end-capping reagents (ECRs) in the Stille polymerization of 2,7-dibromo-9,9-bis(2-ethylhexyl)fluorene (Fl) and 2,5-bis(trimethylstannyl)-thieno[3,2-b]thiophene (TT). Polymerizations were carried out in a one-pot fashion where...
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Categories: Polymer Science News

Homogenous Photopolymerization of Acrylic monomers initiated with ZnO-methacrylate in non-aqueous medium and production of luminescent nanocomposites

Thu, 01/18/2018 - 20:43
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C7PY02030A, CommunicationIrem Ulku, Fabrice Morlet-Savary, Jacques Lalevee, Havva Yagci Acar
Luminescent ZnO/methacrylic acid was demonstrated as an active photoinitiator in the free radical polymerization of vinyl monomers in bulk and in organic solvent without a protic solvent or a co-catalyst,...
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Categories: Polymer Science News

Supramolecular Chirality Induced by Chiral Solvation in Achiral Cyclic Azo-containing Polymers: Topological Effects on Chiral Aggregation

Thu, 01/18/2018 - 20:43
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C7PY02002C, PaperLu Yin, Meng Liu, Yin Zhao, Shuangshuang Zhang, Zhengbiao Zhang, Xiulin Zhu, Wei Zhang
Herein, a series of azobenzene (Azo)-containing side-chain cyclic polymers were successfully synthesized by combining atom transfer radical polymerization (ATRP) and Cu(I)-catalyzed azide/alkyne cycloaddition (CuAAc) "Click" reaction. The aggregates of linear...
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Categories: Polymer Science News

Tailored design of renewable copolymers based on poly(1,4-butylene 2,5-furandicarboxylate) and poly(ethylene glycol) with refined thermal properties

Thu, 01/18/2018 - 11:38

Polym. Chem., 2018, Advance Article
DOI: 10.1039/C7PY01627A, PaperA. F. Sousa, N. Guigo, M. Pozycka, M. Delgado, J. Soares, P. V. Mendonca, J. F. J. Coelho, N. Sbirrazzuoli, A. J. D. Silvestre
New copolymers based on renewable PBF/PEGF are tailored to show advantageous processing features as compared to PBF (enlarged working temperatures and no crystallisation at slow rates).
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Categories: Polymer Science News

Cationic Half-Sandwich Rare-Earth Metal Alkyl Species Catalyzed Polymerization and Copolymerization of Aryl Isocyanides Possessing Polar, Bulky, or Chiral Substituents

Thu, 01/18/2018 - 09:35
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C8PY00007G, PaperXinwen Yan, Shaowen Zhang, Deqian Peng, Pengfei Zhang, Junge Zhi, Xiaolu Wu, Lin Wang, Yuping Dong, Xiaofang Li
Two types of half-sandwich rare-earth metal dialkyl complexes (Cp)Ln(CH2SiMe3)2(THF) 1‒6 (1: Cp = (3aR,4R,8R,8aR)-cyclopentadienyl ligand (Cpx*'), Ln = Sc; 2: Cp = Cpx*', Ln = Y; 3: Cp = Cpx*',...
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Categories: Polymer Science News

THERMORESPONSIVE NANOGELS WITH FILM-FORMING ABILITY

Thu, 01/18/2018 - 02:09
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C7PY01798G, PaperAna Sofia Sonzogni, Mario C. G. Passeggi (Jr), Stefanie Wedepohl, Marcelo Calderon, Luis Marcelino Gugliotta, Veronica D. G. Gonzalez, Roque J Minari
Thermoresponsive nanogeles (NGs) with a film-forming ability could have a great potential in delivery system platforms with a controlled and targeted release of drugs or proteins, such as in topical...
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Categories: Polymer Science News

Electron beam lithography of poly(glycidol) nanogels for immobilization of a three-enzyme cascade

Wed, 01/17/2018 - 06:36

Polym. Chem., 2018, Advance Article
DOI: 10.1039/C7PY01904A, PaperJacob N. Lockhart, Anthony B. Hmelo, Eva Harth
Nanogels devices with spatial confinement of multiple enzymes resulted in retention of bioactivity after 30 days with a 5 fold higher chromogenic output compared to free enzyme cascade devices.
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Categories: Polymer Science News

Synthesis, aggregation and responsivity of block copolymers containing organic arsenicals

Wed, 01/17/2018 - 06:36

Polym. Chem., 2018, Advance Article
DOI: 10.1039/C7PY01852E, CommunicationJoji Tanaka, Seiji Tani, Raoul Peltier, Emily H. Pilkington, Andrew Kerr, Thomas P. Davis, Paul Wilson
Block copolymers containing an organic arsenical (AsAm) have been synthesised by aqueous SET-LRP.
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Categories: Polymer Science News

Facile synthesis of ROS-responsive biodegradable main chain poly(carbonate-thioether) copolymers

Wed, 01/17/2018 - 05:30
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C7PY01908D, PaperBingkun Yan, Yan Zhang, Chao Wei, Yue Xu
Oxidation-responsive thioether-functional polymer has emerged as potential material for biomedical application. Herein, we report the straightforward synthesis of well-defined biodegradable thioether-containing polycarbonate (mPEG-b-PS) based on the macrocyclic sulfur-substituted carbonate monomer...
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Categories: Polymer Science News

Precise synthesis of thermoresponsive polyvinylphosphonate-biomolecule conjugates via thiol-ene click chemistry

Tue, 01/16/2018 - 09:55

Polym. Chem., 2018, 9,284-290
DOI: 10.1039/C7PY01796K, PaperChristina Schwarzenbock, Andreas Schaffer, Philipp Pahl, Peter J. Nelson, Ralf Huss, Bernhard Rieger
Herein we present the first smart polyvinylphosphonate-bioconjugates obtained via an efficient modular synthetic route.
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Categories: Polymer Science News

Design and Preparation of New Polyurea-Polysiloxane-Polyether Copolymer with a Block Soft Segment Prepared by Utilizing Aza-Michael Addition Reaction

Tue, 01/16/2018 - 04:53
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C7PY01525A, PaperBo Pang, Jingzhe Zhang, Minglei Pang, Peijian Zhao, Zhen Yang, Shengyu Feng, Jie Zhang
A new synthesis strategy was presented to prepare a polyurea-polysiloxane-polyether copolymer (PUA). A new block soft segment (b-SS) was synthesised via an aza-Michael addition reaction of acryloxymethyl-terminated polydimethylsiloxane (AT-PDMS) and...
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Categories: Polymer Science News

Synthesis, Characterization and Potential Applications of 5-Hydroxymethylfurfural Derivative Based Poly ([small beta]-thioether ester) Synthesized via Thiol-Michael Addition Polymerization

Tue, 01/16/2018 - 01:50
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C7PY02052J, PaperDaihui Zhang, Marie-Josee Dumont
Dimethylphenylphosphine was used to efficiently initiate the thiol-Michael addition polymerization to yield 5-hydroxymethylfurfural (HMF) derivative based poly([small beta]-thioether esters) with relatively high molecular weights (over 10,000 g/mol) under mild conditions. The...
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Categories: Polymer Science News

Temperature Sensitive Poly(phenyleneethynylenes) Nanomedicines for Intracellular Tracking via Fluorescence Resonance Energy Transfer

Mon, 01/15/2018 - 21:42
Polym. Chem., 2018, Accepted Manuscript
DOI: 10.1039/C7PY02081C, PaperShinan Geng, Qianwen Fu, Hao Zhao, Xiaole Peng, Yanbing Zhao, Jiangling Wan, Liang xiang Yang
pNIPAM-grafted poly(phenyleneethynylene) nanoparticles (pNE NPs) was synthesized by atom transfer radical polymerization and Sonogashira coupling reaction, which was developed as novel self-indicating drug nano-carriers for monitoring intracellular drug release in...
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Categories: Polymer Science News

The effect of linker length on ConA and DC-SIGN binding of S-glucosyl functionalized poly(2-oxazoline)s

Mon, 01/15/2018 - 11:28

Polym. Chem., 2018, Advance Article
DOI: 10.1039/C7PY01939D, PaperGokhan Yilmaz, Veselina Uzunova, Manuel Hartweg, Valentin Beyer, Richard Napier, C. Remzi Becer
A series of poly(2-oxazoline) based glycopolymers with different linkers were prepared via thiol-ene click reaction and cationic ring opening reaction. The binding of these polymers to lectins were studied.
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Categories: Polymer Science News

A displacement-type fluorescent probe reveals active species in the coordinative polymerization of olefins

Mon, 01/15/2018 - 06:18

Polym. Chem., 2018, Advance Article
DOI: 10.1039/C7PY01915G, PaperChao Yu, Pengfei Zhang, Fei Gao, Shaowen Zhang, Xiaofang Li
The correct identification of active species is an important prerequisite to study the mechanism of coordinative polymerization of olefins, which can afford important theoretical guidance for the design and synthesis of new organometallic catalysts and high-performance polyolefin materials.
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