Archive for July, 2014

Polymer Chemistry Impact Factor rises to 5.37

We are delighted to announce that, according to the latest Journal Citation Reports®, Polymer Chemistry‘s Impact Factor* has increased to 5.368.

This is a great indication of the continued strength of Polymer Chemistry as it approaches its 5th anniversary, and we would like to take this opportunity to thank all our readers, authors, referees and board members for their support and engagement with the journal.

Even better news, the journal’s Immediacy Index# has risen to an impressive 1.713, the highest of all primary research journals in the Polymer Science category by some way.

Polymer Chemistry 2013 Immediacy Index

Immediacy Index is a measure of how quickly after publication articles in a journal are cited.  Polymer Chemistry‘s high number indicates that articles are being cited very quickly, and is testament to the high visibilty and relevance of the articles we publish to the polymer community.

So, to make sure your next polymer synthesis paper is seen and cited by fellow polymer chemists, we recommend submitting it to Polymer Chemistry!


Polymer Chemistry wasn’t the only Royal Society of Chemistry journal to see an increase in its Impact Factor this year.  Find a full list of our journals and their 2013 Impact Factors in this blog post.

*The Impact Factor provides an indication of the average number of citations per paper. Produced annually, Impact Factors are calculated by dividing the number of citations in a year by the number of citeable articles published in the preceding two years.

#Immediacy Index is the average number of citations in a given year to papers published in that year.

Data based on 2013 Journal Citation Reports®, (Thomson Reuters, 2014).

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Paper of the week: Hybrid organic–inorganic copolymers with self-healing properties

‘Over the last decade, a broad range of self-healing materials has emerged. Such systems, when they have been damaged, heal themselves either spontaneously or with the aid of a stimulus. Several of these materials draw their inspiration from the design of biological materials. On the other hand, hybrid materials or nanocomposites, defined as composites constituted of two components, one inorganic and the other one organic in nature mixed at the nanometer level, have attracted strong interest both in academia and industry. The combination at the nanoscale of organic and inorganic components leads to highly homogeneous materials, which develop extended organic–inorganic interfaces with tuneable chemical organic–inorganic bonds from weak to strong interactions.’

Graphical abstract: Nano-building block based-hybrid organic–inorganic copolymers with self-healing properties

In this work, Rozes and co-workers prepared new dynamic materials, that can repair themselves after strong damage, by hybridization of polymers with structurally well-defined nanobuilding units. The controlled design of cross-linked poly(n-butyl acrylate) (PnBA) has been performed by introducing a very low amount of a specific tin oxo-cluster. Sacrificial domains with non-covalent interactions (i.e. ionic bonds) developed at the hybrid interface play a double role. Such interactions are strong enough to cross-link the polymer, which consequently exhibits rubber-like elasticity behavior, and labile enough to enable, after severe mechanical damage, dynamic bond recombination leading to an efficient healing process at room temperature. In agreement with the nature of the reversible links at the hybrid interface, the healing process can speed up considerably with temperature .

Nano-building block based-hybrid organic–inorganic copolymers with self-healing properties by F. Potier, A. Guinault, S. Delalande, C. Sanchez, F. Ribot and L. Rozes, Polym. Chem. 2014, 5, 4474-4479.

Julien Nicolas is a web-writer and advisory board member for Polymer Chemistry. He currently works at Univ. Paris-Sud (FR) as a CNRS researcher.

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Paper of the week: Cu(0)-mediated polymerization using high-throughput experimentation

‘Over the past decades, several types of controlled radical polymerization methods have been developed. The most popular methods are atom transfer radical polymerization (ATRP), reversible addition–fragmentation chain transfer (RAFT) polymerization and nitroxide mediated polymerization (NMP). One of the more recently developed techniques, which appears to be very promising, is Cu(0)-mediated polymerization, known variously as SET-LRP or SARA-ATRP. Recent publications have shown significant progress in the area of Cu(0)-mediated polymerization. Among the monomers that have been polymerized in a controlled manner via Cu(0)-mediated polymerization are acrylates, methacrylates, vinyl chloride and (meth)acrylamides. However, for each monomer the polymerization conditions should be optimized, which is in general a very time consuming task.’

Graphical abstract: Cu(0)-mediated polymerization of hydrophobic acrylates using high-throughput experimentation

In this work, Hoogenboom and co-workers report the optimization of the Cu(0)-mediated polymerization of n-butyl acrylate (BA) and 2-methoxyethyl acrylate (MEA) via Cu(0)-mediated polymerization using an automated parallel synthesizer.  Using this robot, up to 16 kinetic reactions could be performed in parallel, resulting in a fast screening of different reaction conditions. Several parameters were optimized to determine the optimal reaction conditions with regard to control over the polymerization and reaction rate. These optimal reaction conditions were then used for the one-pot two-step synthesis of diblock copolymers by sequential monomer addition. Altogether, this work shows the power of high-throughput optimization of Cu(0)-mediated polymerization reaction conditions. As such, it may serve to accelerate optimization of Cu(0)-mediated polymerization conditions and aid in gaining fundamental understanding of the effects of various parameters on the Cu(0)-mediated polymerization.

Cu(0)-mediated polymerization of hydrophobic acrylates using high-throughput experimentation by Lenny Voorhaar, Sofie Wallyn, Filip E. Du Prez and Richard Hoogenboom, Polym. Chem. 2014, 5, 4268-4276.

Julien Nicolas is a web-writer and advisory board member for Polymer Chemistry. He currently works at Univ. Paris-Sud (FR) as a CNRS researcher.

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Polymer Chemistry is going weekly

From 2015, Polymer Chemistry will be moving to weekly publication. We will be increasing the number of issues per year from the current 24 to 48 whilst maintaing the high quality of the journal.

This is great news and a very positive way to mark Polymer Chemistry‘s fifth anniversary next year. It is because of the support we receive from the community that Polymer Chemistry has been going from strength to strength, and we would like to thank all of our readers, authors, referees and board members for their contributions to the journal.

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Paper of the week: Fully biodegradable antibacterial hydrogels

‘Bacterial infection is a serious problem in many areas, especially those involving the use of biomaterials. According to World Health Organization (WHO) statistics, at any time, over 1.4 million people worldwide suffer from infectious complications acquired in hospital, which have much to do with the use of medical devices. Hydrogels are three-dimensional polymer networks that are able to retain a large fraction of aqueous solvent within their structures. Due to their high water content and soft consistency, which is similar to natural tissue, hydrogels resemble natural living tissue more than any other class of synthetic biomaterial. Therefore, hydrogels have received extraordinary attention as biomaterials for use in biomedical applications, such as tissue engineering, wound dressing materials, immunoisolation16 and drug delivery. Thus, fabricating hydrogels with antibacterial properties is crucial for the biomedical field.’

Graphical abstract: Fully biodegradable antibacterial hydrogels via thiol–ene “click” chemistry

In this work, Zhu and co-workers prepared fully biodegradable antimicrobial hydrogels via a thiol–ene “click” reaction under human physiological conditions using multifunctional poly(ethylene glycol) (PEG) derivatives as precursors. Water soluble and degradable PEG derivatives with multi-enes and multi-thiols, respectively, were synthesized by polycondensation of oligo(ethylene glycol) (OEG) with “clickable” monomers. Ammonium groups with long alkyl chains were incorporated into one of the precursors covalently, using dodecyl bis(2-hydroxyethyl) methylammonium chloride as a comonomer.  These types of cationic PEG-type hydrogels showed strong antibacterial abilities against both Gram- negative and Gram-positive bacteria due to the ammonium moieties. Moreover, the hydrogel with fewer ammonium moieties still possessed significant antibacterial abilities, but low toxicity, and has the potential to be used as a medical material.

Fully biodegradable antibacterial hydrogels via thiol–ene “click” chemistry by Hong Du, Guangyu Zha, Lilong Gao, Huan Wang, Xiaodong Li, Zhiquan Shena and Weipu Zhu, Polym. Chem. 2014, 5, 4002-4008.

Julien Nicolas is a web-writer and advisory board member for Polymer Chemistry. He currently works at Univ. Paris-Sud (FR) as a CNRS researcher.

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Author of the Month: Prof. Dr. Jean Francois Carpentier

Prof. Dr. Jean Francois Carpentier received his PhD in 1992 in organic and macromolecular chemistry, University of Lille. He has received several awards, including Pasteur Medal of the graduate school “Ecole Nationale Supérieure de Chimie de Lille”, Bronze medal of CNRS (1997), Recipient of the ATIPE fellowship from CNRS (2001), Recipient of the Rennes Metropole researcher award (2003), Junior member of Institut Universitaire de France (2005), Chevalier in Ordre des Palmes Académiques (2013), Silver Medal CNRS and Germaine et André Lequeux award from the French Academy of Sciences/Institut de France (2014). His research interests include organometallic chemistry of oxophilic elements (groups 2-6, 12-14); design of single-site (stereoselective) polymerization catalysts: metallocenes, post-metallocenes, Ziegler-Natta polymerization and oligomerization catalysis: polyolefins, polydienes, polyesters, functional polymer materials; homogeneous catalysis for fine chemicals synthesis: hydrogenation, hydroelementation, carbonylation and green chemistry and biorenewables, and biodegradable polymer materials. He has co-authored 236 publications in peer-reviewed journals; 48 original patents and 9 book chapters. He has co-supervised over 20 PhD students.

What was your inspiration in becoming a chemist?

 I grew up in a family with a strong appeal for nature and I have been interested in “natural things” from my earliest childhood. When I was 13, at school, I had a wonderful teacher who explained to us the connections between geology, physics and chemistry. I then started to collect minerals and, rapidly, I became more and more interested in the chemistry of these “stones”, trying to understand what they were made of. At 15, I was regularly performing “chemical experiments”, dissolving minerals by acidic treatments and trying to identify which elements were present by wet analytical tests (to the great fear of my parents! but they always encouraged me). Although I was hesitating for a time to become a pharmacist, I finally decided to embark on chemistry studies.

 What was the motivation to write your Polymer Chemistry article?

 Some years ago, my close colleague, Dr. Sophie Guillaume, a specialist in the field of polycarbonates and polyesters, and I started to look at the topical, so-called NIPUs: Non-Isocyanate PolyUrethanes, through the ring-opening of dicyclocarbonate-telechelic polyesters, some materials we are used to preparing in our group. With a former postdoc associate, Dr. Ali Alaaeddine who was working with Dr. Bruno Ameduri in Montpellier, a specialist in fluorinated polymers, we decided to explore fluorinated versions of polyhydroxyurethanes. We anticipated that the combination of these quite different functionalities would make rather unique materials.

 Why did you choose Polymer Chemistry to publish your work? (DOI: 10.1039/C4PY00547C)

Polymer Chemistry is a high-quality journal with a broad audience. The editorial and production teams are very well-organized and turn-around time for peer-reviewing and production is short.

In which upcoming conferences may our readers meet you?

Most of my research is devoted to organometallic catalysis, largely for polymerization catalysis. I will thus attend next July the International Conference on Organometallic Chemistry in Sapporo and the 41th International Conference on Coordination Chemistry in Singapore. Next December, I will attend the 10th SPSJ International Polymer Conference in Tsukuba, Japan.

How do you spend your spare time? Jean-François Carpentier and family

I enjoy spending time with my two kids and my wife. In winter time, all my colleagues know that I go hunting regularly. Extensive walking through the countryside refreshes my mind, gives me time for thinking quietly, and helps me keep fit (admittedly with difficulty…). Besides, I still very much enjoy taking care of my mineral collection that I have not stopped since childhood, visiting museums and mines; chemistry is never far away…

Which profession would you choose if you were not a scientist?

I would probably have become a forest guard or a fisherman.

Read Professor Carpentier’s latest Polymer Chemistry paper:

From glycidyl carbonate to hydroxyurethane side-groups in alternating fluorinated copolymers
Roukaya Hamiye, Ali Alaaeddine, Mouhamad Awada, Benjamin Campagne, Sylvain Caillol, Sophie M. Guillaume, Bruno Ameduri and Jean-François Carpentier  

 

Cyrille Boyer is a guest web-writer for Polymer Chemistry. He is currently an associate professor and an ARC-Future Fellow in the School of Chemical Engineering, University of New South Wales (Australia) and deputy director of the Australian Centre for NanoMedicine.

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