Hot Article: Polymeric vesicles with well-defined poly(methyl methacrylate) (PMMA) brushes via surface-initiated photopolymerization (SIPP)

Chinese scientists have developed a new way to fabricate polymeric vesicles with well-defined PMMA brushes using silica particles as templates by surface-initiated photopolymerization (SIPP).

A cross-linked layer of PDMAEMA was immobilised on the surface of silica particles before photo-initiated polymerisation of methyl methacrylate in the presence of thioxanthone generated PMMA brushes on the vesicles. Removal of the silica cores yielded polymeric vesicles with well-defined PMMA brushes. This robust approach shows great potential for the fabrication and modification of polymer vesicles with differerent sizes and functions.

Interested to know more? Why not read the full article for free:  Fengting Chen, Xuesong Jiang, Rui Liu and Jie Yin, Polym. Chem., 2011, DOI: 10.1039/C0PY00288G (Advance Article)

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Polymer Chemistry Author of the Week – Jan van Hest

Jan van Hest is the head of bio-organic chemistry group in Radboud Univeristy Nijmegen. His group finds its inspiration in natural materials and processes and their aim is to develop smart hybrid materials based on peptides and proteins, using a variety of synthetic techniques, such as proteinengineering, peptide synthesis and controlled polymerization methods. Besides, they are developing mimic natural synthetic processes by miniaturisation of reaction environments using microsystem technology (Process on a Chip), and by compartmentalization of biocatalysts in polymeric capsules (polymersomes). Recently, Jan is awarded a VICI grant from The Netherlands Organisation of Scientific Research (NWO). Please follow the links to find more information on his research group and his recent paper in Polymer Chemistry.

What was your inspiration in becoming a chemist?

From the very moment I was taught chemistry I was intrigued by molecules and materials. The fact that chemistry is all around you and that it can be used to explain the properties of every single object motivated me to find out more about this discipline. In particular the interface between chemistry and biology was something that drew my attention. Since then I have only become even more fascinated by this topic.

What was the motivation behind the research in your recent Polymer Chemistry paper where you have discussed shedding the hydrophilic mantle of polymersomes?

This research started as a discussion with some of my colleagues with whom I collaborate in a drug delivery project. The question that arose was to what extent a drug delivery vehicle had to be PEGylated to have stealth-like properties. A fully PEGylated surface could have a negative effect on the uptake efficiency, whereas if not enough PEG was located on the periphery problems could arise with capsule stability. As synthetic polymer chemists we then decided to answer this question by creating a polymersome of which we could remove part of the PEG layer in a controlled fashion. The fact that we could go as far as 5% (and even further) was a real surprise to us.

Why did you choose Polymer Chemistry to publish your work?

Polymer Chemistry is an exciting new journal which deals with the latest developments in macromolecular science. It has attracted much attention since its start, and I see that many of my colleagues use the journal to highlight their latest results

In which upcoming conferences may our readers meet you?

I will be in Bilbao, Spain, from 21-25 April at the large nanoscience conference. I also will participate in the Nanotech 2011 in Boston in June.

How do you spend your spare times?

My wife and I like to spend our holidays abroad, going from one place to the next and experience both the culture and nature of a country.

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

Difficult question. As a child I used to the say I wanted to become a lawyer, but I guess my present profession fits me much better


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Hot Article: Thermo- and light-regulated fluorescence resonance energy transfer processes within dually responsive microgels

Thermo- and light-responsive microgels have been made via free radical emulsion polymerisation by researchers from University of Science and Technology of China.

The p(NIPAM–DMNA–NBDAE–RhBEA) microgels swelled and collapsed in response to changes in temperature below and above the lower critical solution temperatures (LCSTs), respectively. This reversibly brought the FRET donors (NBDAE) and rhodamine B-based acceptors (RhBEA) into close proximity, allowing tuning of the FRET efficiencies. UV irradiation could also adjust the LCST of the microgels, yielding a dually responsive system.

Interested to know more? Why not read the full article for free: Jun Yin, Haibo Hu, Yonghao Wu and Shiyong Liu, Polym. Chem., 2011, 2, 363–371

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Polymer Chemistry Author of the Week – Eva Malmström Jonsson

Eva Malmström Jonsson has been focusing on the synthesis of complex macromolecular architectures, including dendrimers and hyperbranched macromolecules, and their characterization and evaluation in specific applications. More recently, she has explored surface initiated polymerizations (controlled radical polymerization and ring-opening polymerizations) as viable routes for surface modification of biofibre surfaces at KTH Royal Institute of Technology, School of Chemical Science and Engineering, Sweden.

You can follow the link for further information on her research group and also scroll down to read our short conversation on her recent report in Polymer Chemistry.

What was your inspiration in becoming a chemist?

I had a really great chemistry teacher during high school. She really conveyed a lot of interesting and fascinating stuff about chemistry. She inspired several of the students in my grade to pursue higher education focusing on chemistry!

What was the motivation behind the research in your recent Polymer Chemistry paper where you discussed the selective cleavage of polymer grafts from solid surfaces?

The forest industry is very important in Sweden and there is a strive to develop high-quality end products based on wood polymers. Since quite a number of years we have been interested in conducting surface modification of biofibre surfaces aiming for various functions. It has been really frustrating not to be able to assess the properties of the grafted polymer, being forced to assume that it has similar properties as a polymer formed in parallel from a sacrificial initiator. By this novel initiator we can selectively cleave off the polymer grafts, isolate the polymer and subsequently characterize it, as well as determine the number of chains on the surface. It is a little step towards a deeper understanding on surface-initiated ATRP from biofibre surfaces.

Why did you choose Polymer Chemistry to publish your work?

I find Polymer Chemistry to be a very good journal, with a broad readership, high ambitions regarding contributions and, very importantly, a fast review process and publication.

In which upcoming conferences may our readers meet you?

I will attend the International Dendrimer Symposium 7 in Washington, USA.

How do you spend your spare time?

Presently, I do not have a lot of spare time but when I do, I try to spend time with my family, tend to my garden (not during this time of the year though), or horse-back riding.

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

I think I would have wanted to become an author, or maybe a chef…

 

 

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Top Ten most-read Polymer Chemistry articles in December

The latest top ten most downloaded Polymer Chemistry articles

See the most-read papers of December 2010 here:  

Xiaowei Zhan and Daoben Zhu, Polym. Chem., 2010, 1, 409-419
DOI: 10.1039/B9PY00325H

Andrew B. Lowe, Polym. Chem., 2010, 1, 17-36
DOI: 10.1039/B9PY00216B
 
Neil Ayres, Polym. Chem., 2010, 1, 769-777
DOI: 10.1039/B9PY00246D
 
Guang-Zhao Li, Rajan K. Randev, Alexander H. Soeriyadi, Gregory Rees, Cyrille Boyer, Zhen Tong, Thomas P. Davis, C. Remzi Becer and David M. Haddleton, Polym. Chem., 2010, Advance Article
DOI: 10.1039/C0PY00100G
 
Nicolas Sanson and Jutta Rieger, Polym. Chem., 2010, 1, 965-977
DOI: 10.1039/C0PY00010H
 
Ulrich Mansfeld, Christian Pietsch, Richard Hoogenboom, C. Remzi Becer and Ulrich S. Schubert, Polym. Chem., 2010, 1, 1560-1598
DOI: 10.1039/C0PY00168F
 
Benjamin Le Droumaguet and Julien Nicolas, Polym. Chem., 2010, 1, 563-598
DOI: 10.1039/B9PY00363K
 
Helen Willcock and Rachel K. O’Reilly, Polym. Chem., 2010, 1, 149-157
DOI: 10.1039/B9PY00340A
 
Jay A. Syrett, C. Remzi Becer and David M. Haddleton, Polym. Chem., 2010, 1, 978-987
DOI: 10.1039/C0PY00104J
 
Johannes Pall Magnusson, Aram Omer Saeed, Francisco Fernández-Trillo and Cameron Alexander, Polym. Chem., 2011, 2, 48-59
DOI: 10.1039/C0PY00210K
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Polymer Chemistry Emerging Investigators Themed issue: Out now!

Polymer Chemistry Emerging Investigators Themed Issue: Out now!

The Polymer Chemistry emerging investigators themed issue is now published online. Guest editors Rachel O’Reilly and Andrew Dove introduce the issue in an Editorial (freely available). Click here to read the full listing of papers.

The front cover of the issue highlights Robust bonding and one-step facile synthesis of tough hydrogels with desirable shape by virtue of the double network structure by Junji Saito, Hidemitsu Furukawa, Takayuki Kurokawa, Rikimaru Kuwabara, Shinya Kuroda, Jian Hu, Yoshimi Tanaka, Jian Ping Gong, Nobuto Kitamura and Kazunori Yasuda.

Find us on FacebookFollow Polymer Chemistry on Twitter

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Polymer Chemistry Author of the week – Jean-François Gohy

Jean-François Gohy has been focusing on the synthesis of complex macromolecules for self assembly or function in the Institute of Condensed Matter and Nanosciences, Universite catholique de Louvain.

Find out further information on his research group and also scroll down to read our short conversation on his recent published article in Polymer Chemistry.

What was your inspiration in becoming a chemist?
The whole story started when I was a young boy. I wanted to know what was matter and more importantly how to create new matter by combining existing stuff. That was really exciting! Firstly, I messed up the personal care chemicals that I found. Then my parents decided to offer me for my 9th birthday my first little chemist box and my interest in chemistry kept on going until now!

What was the motivation behind the research in your recent Polymer Chemistry paper?
The idea was to prepare multi-compartment micellar nanocontainers. Such systems are existing form both the fundamental and applied points of view since different active molecules can be selectively encapsulated in distinct nanosized compartments. As perspectives, one could also imagine some selective transport and/or transformation of those molecules between compartments similarly to what happens in living cells.

Why did you choose Polymer Chemistry to publish your work?
To my opinion, Polymer Chemistry is a young and exciting journal for many reasons. Polymer Chemistry meets all the criteria of a modern journal: it offers fast publication, has a wide scope and a broad readership. Since its start, outstanding papers have been published in Polymer Chemistry and it was a great honor for me to contribute. I am confident of a bright future for Polymer Chemistry!

In which upcoming conferences may our readers meet you?
ACS fall meeting in 2011.

How do you spend your spare time?
I am enjoying spending time with my three girls and my wife. I am also doing regularly sport to stay in good shape. I enjoy listening music (from classical to jazz, blues and rock).

Which profession would you choose if you were not a scientist?
Doctor of medicine. Hoping to help and cure people.

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Polymer Chemistry poster prize winners at RSC Biomaterials Group 6th Annual Meeting

RSC Biomaterials Group 6th Annual Meeting has been organized by Andrew Dove in University of Warwick. There meeting was held on January 11th, 2001 with more than 65 participants, 18 poster presentations and 10 plenary or invited lectures. Poster prize committee, Sebastien Lecommandoux and Andreas Heise, selected 3 posters to be awarded. The Editor-in-Chief of Polymer Chemistry, Dave Haddleton, congratulated the winners and presented their certificates and presents.

The 3rd poster prize winner was Lynsey Aitken from Strathclyde University and the title of her poster is “Enzyme sensing using gold nanoparticles”.

The 2nd poster prize winner was Nur Nabilah Shahidan from University of Manchester and the title of her poster is “Thermoresponsive cationic graft polymer for colloidal delivery system application”.

AnnHelen Lu, from Universit of Warwick, was selected as the 1st poster prize winner and received a book from Polymer Chemistry. The title of her poster is “L-Proline functionalized polymers as organocatalysts in asymmetric reactions”.

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Hot Article: Controlled grafting of polystyrene on silica nanoparticles using NMP: a new route without free initiator to tune the grafted chain length

Polystyrene-grafted silica nanoparticles have been synthesised without using a free initiator by a team of French scientists.

Polystyrene on silica nanoparticles

The masses of the grafted chains could be controlled, thus controlling the polymerisation and colloidal stability. This new method avoids the formation of free polymer chains through the use of free nitroxide in the polymerisation step and could find many potential applications in, for example, the field of nanocomposites.

Interested to know more? Why not read the full article for free:
Chloé Chevigny, Didier Gigmes, Denis Bertin, Ralf Schweins, Jacques Jestin and François Boué, Polym. Chem., 2011, DOI: 10.1039/C0PY00271B (Advance Article)

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Polymer Chemistry Author of the week – Jean-François Lutz

Jean François Lutz has been focusing on the preparation of sequence controlled polymers using controlled living polymerization and click reaction techniques. He has recently moved to Strasbourg and his research group “Precision Macromolecular Chemistry” will explore the interfaces between conventional synthetic polymer chemistry, organic chemistry and biochemistry.

Read further information on his research group and also scroll down to read our short conversation on his recent published in Polymer Chemistry.  

What was your inspiration in becoming a chemist?

My family. I had the chance to grow up in an intellectually-rich environment. My father was the president of the French Biophysical Society and my mother was in the scientific headquarters of Rhodia, which is one of the largest French chemical companies. As a child, I have been following my parents in conferences worldwide. So, I really grew up in it!

What was the motivation behind the research in your recent Polymer Chemistry paper?

My group was always very influenced by the chemistry of K. Barry Sharpless at Scripps. Thus, we got interested quite early in copper-catalyzed azide-alkyne cycloadditions (CuAAC), which are now very popular in polymer science. Lately, we also got interested in nitrile oxide-alkyne cycloadditions (NOAC). Sharpless and Fokin demonstrated that these reactions are pretty straightforward. They are certainly not as versatile as CuAAC but they present some interesting advantages. Thus, it was tempting to import these reactions in the field of polymer science. In our paper, this chemistry was studied in collaboration with Frances Heaney who is a talented Irish organic chemist.

Why did you choose Polymer Chemistry to publish your work?

I think that Polymer Chemistry is on the right track to become the number one journal for original research papers in the field of polymer science. I am actually very proud to be an Advisory Board member of Polymer Chemistry.

Could you please tell us about your new Institute in Strasbourg and your research plans?

Working in Strasbourg was always a dream for me. This is definitely the strongest place for Chemistry in France. There is so many world-leading scientists in this city: Jean-Marie Lehn, Jean-Pierre Sauvage, Thomas Ebbesen, Jean-Paul Behr, Pierre Braunstein, Gero Decher and many others. This is indeed a great privilege to interact with such influential scientists. This will certainly have an impact on my future research.

In which upcoming conferences may our readers meet you?

I will be giving a series of lectures in Japan in April. Afterwards, I’ll be attending conferences in Brazil (FBPol 2011), USA (Fall ACS national meeting), Germany (Smart Polymer Systems Conference 2011) and Turkey (APME 2011).

How do you spend your spare times?

Playing LEGO with my son.  

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

If I would not be a scientist, I would probably own an antique book-shop or be a museum curator. I cannot imagine to live without having knowledge around me.

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