Polymer Chemistry Author of the Week – Milan Maric

Milan Maric studied Chemistry (B.Sc.) and Chemical Engineering and Management (B.Eng.&Mgmt.) at McMaster University in Hamilton, Ontario, Canada. He then pursued graduate studies working with Chris Macosko at the University of Minnesota-Twin-Cities in the area of compatibilization of thermoplastic/silicone blends, earning his Ph.D. in 1999. He then worked in the Scale-up Engineering Group at the Xerox Research Centre of Canada (XRCC) from 1999-2003 and subsequently joined McGill University in 2003 as an Assistant Professor in the Department of Chemical Engineering. In 2009, he was promoted to Associate Professor. Maric’s research group principally focuses on the application of nitroxide mediated polymerization to develop functional materials for a wide range of applications such as block copolymer surfactants, membrane/barrier materials, conductive copolymers and stimuli-responsive polymers.

Please follow the link for further information on Milan Maric’s research group and his recent paper in Polymer Chemistry.

What was your inspiration in becoming a chemist?

I thank my high school teachers and the professors at my undergraduate university for providing me with the stimulus. I liked the ability to creatively transform materials and to do it in a methodical and disciplined manner.

What was the motivation behind the research in your recent Polymer Chemistry paper? (DOI: 10.1039/C1PY00190F)

The main thrust of my research group is to use nitroxide mediated polymerization (NMP) for functional materials. Specifically, we have been trying to show that NMP can be used for a wider range of monomers than has been traditionally associated with NMP, such as methacrylates. In this particular case, we have been trying to make epoxy functional block copolymers with glycidyl methacrylate and our paper describes how we can do that with the BlocBuilder family of nitroxides.

Why did you choose Polymer Chemistry to publish your work?

Polymer Chemistry, since its inception, has provided an excellent forum to disseminate the latest developments in polymer synthesis techniques. We thought the results of our work were aligned well with the aims of the journal and we felt it would be an interesting venue to communicate our work with our peers.

In which upcoming conferences may our readers meet you?

I will be at the ACS fall meeting in Denver at the end of August and after that, I will attend the CSChE meeting in London, Ontario in October.

How do you spend your spare time?

I try to keep active with athletics and I am trying to stay in shape by weight training and swimming.

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

Growing up in Canada, I dreamed of being an ice hockey player, naturally, although soccer was the only sport I was allowed to put school in a subordinate position. More realistically, I think I would still be involved in teaching in some kind of capacity.

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Hot Article: Block copolymer conjugates prepared by sequentially grafting from proteins via RAFT

Scientists at Southern Methodist University, USA, have shown that retaining the active end group functionality during grafting-from RAFT polymerizations from model proteins can give thermoresponsive diblock copolymer–protein conjugates. The team behind the research claim that the reduced steric limitations of this method could help create a wide variety of block copolymer bioconjugates with high molecular weight synthetic components.

Graphical abstract: Block copolymer conjugates prepared by sequentially grafting from proteins via RAFT

Interested to know more? Why not read the full paper: Hongmei Li, Ming Li, Xiao Yu, Abhijeet P. Bapat and Brent S. Sumerlin, Polym. Chem., 2011, 2, 1531-1535

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Hot Article: Multi-functionalization of helical block copoly(alpha-peptide)s by orthogonal chemistry

A method for preparing block copolypeptides with side-chain groups capable of orthogonal functionalisation via “click” chemistry has been developed by polymer chemists at Louisiana State University, USA. All the block copoly(α-peptide)s adopt α-helical conformations both in solid state and in solution. The team say that this methodology provides a convenient and modular approach towards helical block copoly(α-peptides) with diverse structures by side-chain conjugation, allowing control over polymer bioactivity, solubility and self-assembly properties.

Graphical abstract: Multi-functionalization of helical block copoly(α-peptide)s by orthogonal chemistry

Read the full paper: Haoyu Tang and Donghui Zhang, Polym. Chem., 2011, 2, 1542-1551

 

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Polymer Chemistry Author of the Week: Eric Drockenmuller

Eric Drockenmuller was born in 1973 in Thionville (France), and received his PhD degree in 2002 from the University of Strasbourg (France) after working on nitroxide-mediated radical polymerization. He undertook a two years postdoctoral position with Prof. C. J. Hawker (IBM Almaden Research Center, California, USA) and Prof. T. P. Russell (University of Massachusetts, Amherst, USA) working on the synthesis and functionalization of nanostructured materials. He was appointed Assistant Professor in 2004 and full Professor in 2011 at the University of Lyon 1 (France). Since October 2010 he has been a junior member of the “Institut Universitaire de France” (IUF).

Please follow the links for further information on Eric’s laboratory and his recent paper in Polymer Chemistry.

What was your inspiration in becoming a chemist?

Among science topics chemistry has always been my favourite as it is very visual and requires a good memory to assimilate all different reactions and mechanisms. I converged to polymer and materials chemistry after attending an invited seminar which made me realize how important they are in our daily life. I always liked building up things starting from scratch or basic building blocks, like a fancy lego game for grown-ups. I appreciate very much the creativity and interactions involved in the daily life of a researcher in polymer chemistry.

What was the motivation behind the research in your recent Polymer Chemistry paper? (DOI: 10.1039/c0py00251h)

As a polymer chemist I thought that if matching functionalities were found at polymer chain-ends and at a substrate’s surface, things would easily result in surface functionalization. After initiating a fruitful collaboration with Profs. Liliane Léger and Yves Grohens I realized that physics needed to be considered more carefully. Therefore together we pushed beyond our knowledge of the grafting of poly(ethylene glycol) brushes to silicon substrates using click chemistry.

Why did you choose Polymer Chemistry to publish your work?

We were invited to contribute to a special issue guest edited by Rachel O’Reilly and Andrew Dove in this new promising journal.

In which upcoming conferences may our readers meet you?

I will attend the Aquitaine conference in Bordeaux (France) next October, the EUPOC conference in Doha (Qatar) in January 2012. I also have the honour to co-organize a symposium at the IUPAC 2012 conference together with Profs. Craig Hawker and Axel Muller in June 2012.

How do you spend your spare time?

Besides movies, gigs or travels, I have practiced skateboard since I was 16 and go to the Lyon indoor skatepark with my son every Friday night (when I’m not injured as I’m getting old).

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

I always dreamt of being a professional skateboarder.

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Hot Review: Synthesising alkoxyamine onto activated olefins

Intermolecular radical 1,2-addition of the BlocBuilder MA alkoxyamine onto activated olefins: a versatile tool for the synthesis of complex macromolecular architecture: In this Hot Review Didier Gigmes et Al., discuss the potential of the intermolecular radical 1,2-addition from the commercially available BlocBuilder MA alkoxyamine onto activated olefins to synthesize either new functionalized alkoxyamines or various macromolecular architectures.

Graphical abstract: Intermolecular radical 1,2-addition of the BlocBuilder MA alkoxyamine onto activated olefins: a versatile tool for the synthesis of complex macromolecular architecture

Didier Gigmes, Pierre-Emmanuel Dufils, David Glé, Denis Bertin, Catherine Lefay and Yohann Guillaneuf, Polym. Chem., 2011, DOI:10.1039/C1PY00057H, Advance Article

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Polymer Chemistry Author of the Week-Martina Stenzel

Martina Stenzel studied chemistry at the University of Bayreuth, Germany, before completing her PhD in 1999 at the Institute of Applied Macromolecular Chemistry, University of Stuttgart, Germany. With a DAAD scholarship (German Academic Exchange Service) in her pocket, she started working as a postdoctoral Fellow at the UNESCO Centre for Membrane Science and Technology at the University of New South Wales (UNSW), Sydney, Australia. In 2002, she took on a position as a lecturer at the University of New South Wales and worked within the Centre for Advanced Macromolecular Design (CAMD) on complex polymer architectures via RAFT polymerization and honeycomb structured porous films. In 2007, she got promoted to Associate Professor and in the following year obtained a prestigious ARC Future Fellowship. Her research interest is focused on the synthesis of functional polymers with complex architectures such as glycopolymers and other polymers for biomedical applications, especially polymers with in-built metal complexes for the delivery of metal-based anti-cancer drugs. She is currently the past-chair of the Polymer division of the Royal Australian Chemical Institute and editor of the Australian Journal of Chemistry.

Please follow the link for further information on Martina’s research group and her recent paper in Polymer Chemistry.

What was your inspiration in becoming a chemist?

I really enjoyed chemistry at school and having a great chemistry teacher helped. I took chemistry as a main subject and I choose as my subject assignment a topic on antibiotics. Reading about discoveries and advancement in this area absolutely fascinated me and I decided that this is my destiny. Unfortunately, I never worked with antibiotics. Maybe I should combine antibiotics with polymers, here is an idea….!

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

We are on a quest to figure out what is the best possible polymer structure to achieve highest binding while we only need very small amount of sugar. Synthesis of certain carbohydrates can be very tedious and we don’t want to “waste” any active molecules. We therefore thought that the design of a flexible spacer allows the sugar to move around like an octopus to find the lectin receptor.

Why did you choose Polymer Chemistry to publish your work?

The reviewing process is highly efficient, you know the outcome of your submission in less than three weeks. In addition, Polymer Chemistry has a lot of exposure, I think it is already on the “to read” list of a lot of polymer scientists.

In which upcoming conferences may our readers meet you?

I will be at the European Polymer Federation in Granada, at the Asian Cyclodextrin Conference in Australia and the Polymer Pacific Federation in Korea. Unfortunately, Australia is a long way away and travelling is not so easy.

How do you spend your spare time?

I have two little children, my “spare” time involves swings, the zoo and listening to “baa baa black sheep” at least twenty times in a row. If I have time though, I enjoy reading a good novel and books on medieval history. I also enjoy bush walking and sight seeing.

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

I love astronomy! I could imagine myself gazing into the stars for a living.

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Top Ten most-read Polymer Chemistry articles in May

Read the most-read Journal of Materials Chemistry articles of May 2011, listed below:

Polymeric vesicles in biomedical applications
René P. Brinkhuis, Floris P. J. T. Rutjes and Jan C. M. van Hest
Polym. Chem., 2011, 2, 1449-1462

Multiresponsive polymers: nano-sized assemblies, stimuli-sensitive gels and smart surfaces
George Pasparakis and Maria Vamvakaki
Polym. Chem., 2011, 2, 1234-1248

Thiol-ene “click” reactions and recent applications in polymer and materials synthesis
Andrew B. Lowe
Polym. Chem., 2010, 1, 17-36

Synthesis of thermoresponsive oxazolone end-functional polymers for reactions with amines using thiol-Michael addition “click” chemistry
The Hien Ho, Martin Levere, Jean-Claude Soutif, Véronique Montembault, Sagrario Pascual and Laurent Fontaine
Polym. Chem., 2011, 2, 1258-1260

FDA-approved poly(ethylene glycol)–protein conjugate drugs
Steevens N. S. Alconcel, Arnold S. Baas and Heather D. Maynard
Polym. Chem., 2011, 2, 1442-1448

Diels–Alder “click” reactions: recent applications in polymer and material science
Mehmet Atilla Tasdelen
Polym. Chem., 2011, DOI: 10.1039/C1PY00041A, Advance Article

Chain-end- and in-chain-functionalized AB diblock copolymers as key building blocks in the synthesis of well-defined architectural polymers
Akira Hirao, Kota Murano, Toshiyuki Oie, Masahiro Uematsu, Raita Goseki and Yuri Matsuo
Polym. Chem., 2011, 2, 1219-1233

Topological polymer chemistry: a cyclic approach toward novel polymer properties and functions
Takuya Yamamoto and Yasuyuki Tezuka
Polym. Chem., 2011, DOI: 10.1039/C1PY00088H, Advance Article

Boron-containing polymers as versatile building blocks for functional nanostructured materials
Fei Cheng and Frieder Jäkle
Polym. Chem., 2011, DOI: 10.1039/C1PY00123J, Advance Article

Functionalization of inorganic nanoparticles with polymers for stealth biomedical applications
Koon Gee Neoh and En Tang Kang
Polym. Chem., 2011, 2, 747-759

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Polymer Chemistry Author of the Week – Cameron Alexander

Cameron Alexander received degrees (BSc and PhD) in Chemistry from the University of Durham, UK, and carried out post-doctoral research at the Melville Laboratory for Polymer Synthesis, University of Cambridge. He took up an EPSRC Advanced Research Fellowship before moving to the School of Pharmacy, University of Nottingham in June 2005. Professor Alexander was promoted to a personal Chair in Polymer Therapeutics at Nottingham in 2009, where he is also Head of the Division of Drug Delivery and Tissue Engineering, and Operations Director of the EPSRC/AstraZeneca/University of Nottingham Doctoral Training Centre in Targeted Therapeutics. He is a Fellow of the Royal Society of Chemistry, a member of the Editorial Board of Journal of Materials Chemistry, and has published more than 100 refereed articles. Research in his group centres on the synthesis of responsive/‘smart’ materials for biomedical applications. Professor Alexander is currently an EPSRC Leadership Fellow (2009-2014) in the area of personalised medicines.

Please follow the link for further information on Cameron’s research group and his recent paper in Polymer Chemistry.

What was your inspiration in becoming a chemist?

I have always been fascinated by science, but have also always felt that practical value and application are important, hence the study of chemistry and my subsequent move into polymers and pharmaceutical materials. As is no doubt the case with many career scientists I was lucky to have great chemistry teachers and mentors throughout my career, from school, through an industry gap year with Ciba-Geigy, then at university in Durham and on to my current position at Nottingham. In chemistry and related disciplines, you have a chance to be creative, work with a whole range of amazing people and ideally, do something that is of value to others. We try to inspire in turn, and again I have been lucky to be part of Brady Haran’s fantastic Test-Tube project at Nottingham (see http://www.test-tube.org.uk/). The Periodic Table videos he has done with Martyn Poliakoff, Pete Licence and others are an inspiration in themselves.

What was the motivation behind the research in your recent Polymer Chemistry paper? (DOI: 10.1039/C1PY00128K)

In a School of Pharmacy we combine fundamental and applied science interests, and modifying the properties of natural materials with polymers fits into both categories. In addition to their intended roles in biology, many biopolymers, and especially proteins, might act as powerful drugs but they are often too easily degraded to be used in a standard injectable formulation. Decorating proteins with polymers can enhance their stability as well as increase their circulation time in the body, but also can reduce their intended activity too. By attaching polymers that can collapse or expand dependent on a stimulus, we intend to keep the enhanced stability of the polymer-protein conjugate, but switch the enzyme back to a highly active state when needed by collapsing the attached polymer. Here we developed methods to modify trypsin, a well-known protease, but in ways that allowed the chemistries to be done entirely in aqueous media, and with polymer architectures that allowed us to play with the way the polymer-trypsin conjugate assembled in solution. In turn, this allowed us to direct the activity of the enzyme – though of course not to the extent that we intended!

Why did you choose Polymer Chemistry to publish your work?

In part it was because it was a Themed Issue but also because the journal is becoming the go-to site for the polymer science that most overlaps with what we are doing. The Editorial Board are all strongly involved in the more multidisciplinary aspects of polymer science, so it makes sense for us to send our papers to Polym. Chem. as, if we get past the reviewers, the science will be very visible.

In which upcoming conferences may our readers meet you?

I will be at the Materials Chemistry 10 Conference (Manchester, July 2010), the UK PharmSci meeting (Nottingham, September 2011) and the International Symposium on Stimuli-Responsive Materials (Hattiesburg, Mississippi) in October 2011 talking about responsive polymers.

How do you spend your spare time?

Pre-children days my spare time involved mountain walks, trying to play drums and a bit of volunteering for Amnesty International but now the realities of combining science with young(ish) children means the concept of spare time is pretty nebulous. However, I do manage the occasional attempt at playing squash and plan to hit a drum kit badly for the amusement or otherwise of delegates at next year’s Warwick Polymer meeting.

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

Mountain guide in Scotland – no contest.

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Hot Article: Design and synthesis of thermo-responsive hyperbranched poly(amine-ester)s as acid-sensitive drug carriers

Hyperbranched poly(amine-ester)s that combine thermo-responsiveness and a highly branched structure, can be used to construct smart drug delivery systems claim scientists from Shanghai Jiao Tong University, China. The team led by Xinyuan Zhu and Bangshang Zhu synthesized the hyperbranched polymers with a one-pot through proton-transfer polymerization of triethanolamine, trimethylolpropane, and glycidyl methacrylate using potassium hydride as a catalyst. The team used the hyperbranched polymers to encapsulate the anticancer drug doxorubicin and then tested the effectiveness of the release of the drug in cells.

Graphical abstract: Design and synthesis of thermo-responsive hyperbranched poly(amine-ester)s as acid-sensitive drug carriers

Yan Pang, Jinyao Liu, Yue Su, Jieli Wu, Lijuan Zhu, Xinyuan Zhu, Deyue Yan and Bangshang Zhu, Polym. Chem., 2011,  DOI:10.1039/C1PY00053E,  Advance Article

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Themed Issue on New Methods of Polymer Synthesis

Polymer Chemistry will publish a themed issue on New Methods of Polymer Synthesis in 2012. Please e-mail the editorial office, polymers-rsc@rsc.org,  if you would like to contribute an article.

The Guest Editors of the issue are Professors Christopher Barner-Kowollik (Karlsruhe Institute of Technology, Germany), Jean-François Lutz (Institut Charles Sadron, France) and Sebastien Perrier (University of Sydney, Australia).

The special issue will focus on the latest methodological developments in polymer synthesis, spanning the entire range of synthetic approaches ranging from ionic to coordination to living radical processes. We wish to highlight not only the latest advances within these individual fields, but also demonstrate how they can interconnect and be combined with other emerging synthetic technologies such as orthogonal modular ligation and small molecule organic chemistry. In addition, we wish to encourage our authors to highlight how their novel chemistries can aid in the construction of advanced material concepts. It is the aim to bring together the leading researchers in the field in a cross-methodology state-of-the-art framework of cutting-edge polymer synthesis.

All manuscripts will be handled by the Polymer Chemistry Associate Editors and Editorial office and refereed in accordance to the standard procedures of the journal, and in this respect invited articles will be treated in the same way as regular submissions to the journal.

The deadline for the receipt of manuscripts for this themed issue is 30th September 2011

Manuscripts can be submitted using the RSC’s on-line submissions service. Please clearly mark that the manuscript is submitted for the themed issue on New Methods of Polymer Synthesis. Please would you inform the editorial office by e-mail at polymers-rsc@rsc.org as soon as possible if you plan to submit to the issue and whether your contribution will be original research or a review-type article.

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