Archive for August, 2013

Plant protein regulates diabetes treatment: Polymer Chemistry article in Chemistry World

A plant protein has been used to make a new class of glucose-responsive polymer nanogels that could one day negate the need for diabetes patients to constantly monitor their blood glucose levels and inject themselves with insulin.

Diabetes currently affects over 347 million people worldwide and with this number set to rise, research into the treatment of this disease is of vital importance. For type 1 and advanced type 2 diabetes, patients must regularly prick their fingers to check their blood glucose levels and inject themselves with insulin accordingly. This not only impinges on a patient’s quality of life, but also fails to precisely control the dose of insulin reaching its main site of action, the liver.

Glucose induces a conformation change in concanavlin A, causing a change in the volume of the nanogel

Interested to know more? Read the full news article by Jessica Cocker in Chemistry World here…

Read the article by T Ye et al. in Polymer Chemistry:

Synthesis and volume phase transition of concanavalin A-based glucose-responsive nanogels
Ting Ye, Suting Yan, Yumei Hu, Li Ding and Weitai Wu  
DOI: 10.1039/C3PY00778B

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Author of the Week: Prof. Peihong Ni

Prof. Peihong Ni graduated from Nanjing University in 1982 with a B.Sc. degree in Polymer Chemistry. She received her M.Sc. degree in Organic Chemistry from Soochow University (Suzhou, China) in 1988, and her Ph.D. degree in Polymer Chemistry and Physics under the supervision of Prof. Shoukuan Fu from Fudan University in 2001. Since 1988, she has been a faculty member in Soochow University as a teaching assistant (1988-1989), lecturer (1989-1996), associate professor (1996-2003) and full professor (since 2003). She worked in Eastern Michigan University (EMU, 1998-1999) as a Ph.D. candidate on a joint program between Fudan and EMU. Her current research interests are in the design and synthesis of biocompatible and stimuli-responsive polymers for biomedical applications, fluorocarbon-hydrocarbon hybrid amphiphilic copolymers, as well as (mini)emulsion polymerization. She has published more than 70 peered-reviewed articles and three book chapters, and held 13 authorized patents of China.

 Research Website: http://chemistry.suda.edu.cn/en/index.aspx?lanmuid=80&sublanmuid=636&id=170

What was your inspiration in becoming a chemist?

It came when I was still in my junior high years, when I began to admire scientists, and was inspired by some practical chemistry experiments, which made me decide on my later choice of chemistry as a career. And it continued during my university period when my particular interest in chemistry grew stronger. Later on, as I worked as a college teacher and continued to pursue my M.Sc. and Ph.D. degrees, the interest brought me even greater delight. Now I feel fortunate that I never have changed my choice of chemistry, and polymer chemistry in particular.

What was the motivation to write your Polymer Chemistry article?

Over the past decade, my team and I started from oxyanion-initiated polymerization, and further extended to “living”/controlled polymerization, ring-opening polymerization in the design and synthesis of stimuli-responsive amphiphilic polymers. We have studied the self-assembly behavior of these polymers. Under the financial support from the National Natural Science Foundation of China (NSFC), we have gradually concentrated our emphasis on the preparation of biocompatible and biodegradable polymers, as well as their potential applications in gene and drug delivery. In particular, we have paid close attention to the biomedical application of polyphosphoesters. This paper is our latest progress in this field, and it reports on the preparation of a novel water-soluble polymeric prodrug, paclitaxel-polyphosphoester conjugated with targeted folic acid molecules. The results show that it offers a convenient but efficient approach for the construction of multifunctional polymeric prodrugs.

I’d like to use this opportunity to extend my sincere thanks for all those who have contributed to this work.

 

Why did you choose Polymer Chemistry to publish your work? (DOI: 10.1039/C3PY00419H )

 

As regular readers of Polymer Chemistry, our group has noted that many well-known polymer scientists have reported their research progress in this journal. This journal has quickly become one of the key journals in polymer science because of the original content, attractive design, and high-quality pictures. We hope the publication of this article here will bring us more chances of exchange and cooperation from the polymer community worldwide.

 

At which upcoming conferences may our readers meet you?

I will attend the Chinese Polymer Conference in October 12-16th, Shanghai (http://www.polymer.cn/polymer2013) and the 13th Pacific Polymer Conference in November 17-22nd, Kaohsiung, Taiwan (http://www.ppc2013.tw/index.html).

How do you spend your spare time?

My greatest enthusiasm is still for chemistry and most of my spare time is immersed in it. In addition, music is also my hobby. I love my family, and especially like to talk with my daughter over everything she is interested in. Seeing her growing from a baby to a graduate student, I have learned how parents and their children can be good friends, and how to help young people to follow their academic pursuits unremittingly and keep improving themselves.

 

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

 

Maybe I would be a photographer. Quite a few of the pictures I have shot surprised my friends and they even thought I should be a professional rather than an amateur photographer.


 

 

 

 

 

 

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Author of the Week: Prof. Jiannian Yao

Prof. Jiannian Yao received his PhD degree with Prof. Akira Fujishima at Tokyo University in 1993. Then he joined the Institute of Photographic Chemistry, Chinese Academy of Sciences (CAS), and now he is a Professor of Chemistry in the Institute of Chemistry, CAS. He has been a member of CAS since 2005, and a fellow of the Royal Society of Chemistry (RSC) since 2008. He is currently serving as the chairman of the Chinese Chemical Society (CCS), and is the vice president of the National Natural Science Foundation of China (NSFC). His research interests include organic and inorganic opto-functional materials. He has published more than 350 papers, which have been cited nearly 6000 times.

(Research Group: http://jnyao.iccas.ac.cn/)

 What was your inspiration in becoming a chemist?

Chemistry is a very central discipline, which connects the profound principles in physics and the complex phenomena in materials/biological science. Through various chemical routes, we can build molecules, clusters, nanoparticles, mesoscopic structures, and macroscopic materials over a wide range of scales. This not only provides us an ideal test bed to prove our bold theoretical conjectures, but also gives rise to many practical applications that help in solving the energy demand and environment problem. I am really enjoying my research in chemistry, and I hope it will contribute to both scientific advance and people’s everyday life.

What was the motivation to write your Polymer Chemistry article?

As potential alternatives to the widely used electron-acceptor of PCBM, highly efficient non-fullerene small molecules with excellent solution-processability are the key bottleneck for the further advances of the solution-processed non-fullerene organic solar cells (OSCs). Our initial motivation is to develop new efficient solution-processed non-fullerene small molecules. Perylene diimide (PDI) derivatives are potential non-fullerene small molecules and have been researched for several tens of years, but their strong aggregation ability normally limits their potential applications in the field of OSCs. To resolve this problem, we have designed and synthesized a series of PDI dimers which combine both the twisted molecular conformations and the amphiphilic side chains. This design concept carries out the balance between the pi-pi stacking ordering of the PDI chromphores and the reduced aggregate size of the acceptor phase when blended with a donor. As part of our findings, this Polymer Chemistry article ( DOI: 10.1039/C3PY00457K) tells the steric pairing effects from the twisted conformations of the molecular backbone and the role of the solvophilic and twisted bridge. Both of them determine the molecular aggregation ability and further the photovoltaic properties of the non-fullerene OSCs, shedding light on the fine-tuning molecular aggregation ability by judicious molecular tailoring.

Why did you choose Polymer Chemistry to publish your work? (DOI: 10.1039/C3PY00457K)

Polymer Chemistry is a leading journal in the field of polymer science with many high quality and impact papers in the photovoltaic field. Also, the reviewing and publishing process is very fast, ensuring a timely report of our latest results.

In which upcoming conferences may our readers meet you?

I will attend the 29th Chinese Chemical Society (CCS) Congress held by Peking University in the year of 2014. This congress will invite chemists from China and many other countries (US, UK, Germany, Japan, etc.).

How do you spend your spare time?

I liked playing volleyball very much when I was younger. In these years, I often do some exercises on a treadmill machine, or just take a walk with my family. Chinese calligraphy is also one of my hobbies.

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

I would probably be engaged in the education career. I believe teaching the younger generation is essential to social progress. Actually, helping my students with their research is a very important part of my current job.

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

To keep up-to-date with all the latest research, sign-up to our RSS feed or Table of contents alert.

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Author of the Week: Prof. Lei Tao

Prof. Lei Tao received his bachelor’s (chemistry) and master’s (polymer chemistry and physics) degrees from University of Science and Technology of China (USTC) in 1999 and 2002, respectively. He got a PhD in Chemistry from Warwick University with Prof. David Haddleton in 2006. Then he moved to University of California, Los Angeles (UCLA) as a Post-doc with Prof. Heather Maynard (2006-2008). From Sept. 2008 to Aug. 2010, he worked as a research assistant with Prof. Tom Davis in University of New South Wales (UNSW). He joined Tsinghua University as an associate professor in 2010. His current research interests include the new polymerization methodology, synthesis of well-defined polymers for their bio-applications.

 

http://www.tsinghua.edu.cn/publish/chem/2142/2011/20110401045614543624055/20110401045614543624055_.html

What was your inspiration in becoming a chemist?

I became a chemist because I found chemistry is so interesting and I always hope to find some new things from flasks. I like the feeling of discovering some unexpected things.

What was the motivation to write your Polymer Chemistry article?

We published that paper to share our opinion about click chemistry. People actually found many fantastic reactions already, we found some multi-component reactions are clickable, thus we hope to utilize multi-component reactions (the Biginelli reaction, for example) in polymer chemistry, biological chemistry to prove people can look on some multi-component reactions as a new type of click reactions.

Why did you choose Polymer Chemistry to publish your work? (DOI: 10.1039/C3PY00553D)

Polymer Chemistry is an outstanding journal with high impact and quality in polymer science, the publishing process is very fast and fair.

In which upcoming conferences may our readers meet you?

I have not made the schedule yet, but I am planning to join the coming IUPAC conference.

How do you spend your spare time?

I normally spend my spare time with my family, watching football games, cooking at home, and doing some exercise.

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

If I were not a chemist, maybe I would choose historian as my career.

To keep up-to-date with all the latest research, sign-up to our RSS feed or Table of contents alert.


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