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7,144 Newest Publications about the topic molecular weight

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Bio-based polycarbonate from limonene oxide and CO2 with high molecular weight, excellent thermal resistance, hardness and transparency

10-Feb-2016 | O. Hauenstein; M. Reiter; S. Agarwal; B. Rieger; A. Greiner, Green Chemistry, 2016

Completely bio-based, high molecular weight (

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Bioactive clusters promoting cell penetration and nucleic acid complexation for drug and gene delivery applications: from designed to self-assembled and responsive systems

09-Feb-2016 | Eline Bartolami; Camille Bouillon; Pascal Dumy; Sébastien Ulrich, Chemical Communication, 2016

Bioactive low-molecular-weight compounds are actively pursued, as an alternative to macromolecules, for biomedical applications such as drug and gene delivery. However, achieving effective biomolecular surface recognition with small molecules is a considerable challenge. We review herein recent ...

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Attractive aerobic access to the [small alpha],[small beta]-unsaturated acyl azolium intermediate: oxidative NHC catalysis via multistep electron transfer

09-Feb-2016 | L. Ta; A. Axelsson; H. Sundén, Green Chemistry, 2016

To replace high molecular weight oxidants with air (O2) we introduce multistep electron transfer NHC catalysis. The method provides a general and selective oxidation of the α,β-unsaturated aldehyde derived homoenolate to the synthetically useful α,β-unsaturated acyl azolium intermediate. Several ...

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Zidovudine insertion in tailor-made propylene and ethylene oxide copolymers

07-Feb-2016 | Author(s): Ana M. Borreguero, Martín Muñoz, Juan C. De Haro, Manuel Carmona, Juan F. Rodríguez, Reactive and Functional Polymers, 2016

Publication date: Available online 2 February 2016 Source:Reactive and Functional Polymers Author(s): Ana M. Borreguero, Martín Muñoz, Juan C. De Haro, Manuel Carmona, Juan F. Rodríguez A synthetic strategy has been developed to create tailor-made poly(ethylene glycol) and ...

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Compatibilized the thermosetting blend of epoxy and redistributed low molecular weight poly(phenylene oxide) with triallylisocyanurate

05-Feb-2016 | Wenjing Chen, Hongli Yang, Huawei Zou, Pengbo Liu, Journal of Applied Polymer Science, 2016

ABSTRACT Vinyl‐containing low molecular weight PPO (R‐PPO) was prepared by redistribution reaction between commercially available PPO and maleic anhydride (MAH) and used to modify epoxy resin (EP). TAIC was furthermore used as the compatibilizer of EP/R‐PPO system in this study. The curing ...

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Amidine-Mediated Zwitterionic Ring-Opening Polymerization of N-Alkyl N-Carboxyanhydride: Mechanism, Kinetics, and Architecture Elucidation

05-Feb-2016 | Ang Li; Lu Lu; Xin Li; LiLin He; Changwoo Do; Jayne C. Garno; Donghui Zhang, Macromolecules, 2016

Zwitterionic ring-opening polymerization (ZROP) of N-butyl N-carboxyanhydrides (Bu-NCAs) has been investigated using 1,8-diazabicycloundec-7-ene (DBU), a bicyclic amidine initiator. It was found that poly(N-butylglycine)s (PNBGs) with molecular weight (Mn) in the 3.5–32.4 kg mol–1 range and ...

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Synthesis of Poly(3-substituted thiophene)s of Remarkably High Solubility in Hydrocarbon via Nickel-Catalyzed Deprotonative Cross-Coupling Polycondensation

05-Feb-2016 | Keisuke Fujita; Yugo Sumino; Kenji Ide; Shunsuke Tamba; Keisuke Shono; Jian Shen; Takashi Nishino; Atsunori Mori; Ta ..., Macromolecules, 2016

Polythiophenes bearing a siloxane moiety in a substituent at the 3-position are prepared by deprotonative polycondensation of 2-bromo-3-substituted-thiophene with a bulky magnesium amide chloromagnesium 2,2,6,6-tetramethylpiperidine-1-yl lithium chloride salt (TMPMgCl·LiCl) catalyzed by a nickel ...

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Synthesis of well‐defined polyacrylonitrile by ICAR ATRP with low concentrations of catalyst

04-Feb-2016 | Melissa Lamson, Maciej Kopeć, Hangjun Ding, Mingjiang Zhong, Krzysztof Matyjaszewski, Journal of Polymer Science Part A: Polymer Chemistry, 2016

ABSTRACT Acrylonitrile (AN) was polymerized by initiators for continuous activator regeneration (ICAR) atom transfer radical polymerization (ATRP). The effect of the ligand, tris(2‐pyridylmethyl)amine (TPMA) and N,N,N',N'‐tetrakis(2‐pyridylmethyl)ethylenediamine (TPEN), in the Cu‐based ...

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Design of Piperazine Organoiron Macromolecules with Antibacterial and Anticancer Activity

04-Feb-2016 | Alaa S. Abd‐El‐Aziz, Amani A. Abdelghani, Jason K. Pearson, Mohamed K. Awad, David P. Overy, Russell G. Kerr, Macromolecular Chemistry and Physics, 2016

A series of organoiron complexes containing piperazine units have been synthesized via sequential nucleophilic aromatic substitutions. The structures and molecular properties of these complexes are investigated using various spectroscopic and analytical techniques. Cyclic voltammetric studies ...

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Effect of covering filaments on the compression performance and failure mechanism of unidirectional fiber‐reinforced plastic

04-Feb-2016 | Fangtao Ruan, Limin Bao, Polymer Composites, 2016

The effects of covering ultra‐high molecular weight polyethylene (UHMWPE) fibers with different types and spacings of filaments on the longitudinal compression properties of unidirectional UHMWPE fiber‐reinforced epoxy resin samples were investigated. UHMWPE fiber bundles covered with fiber ...

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