Archive for the ‘news’ Category

Flexible HVO paper as cathode for Li-ion batteries

Could rechargeable batteries for portable electronic devices be flexible and rollable?

Scientists in Singapore show that hydrated vanadium pentoxide (HVO)-based bulky paper are excellent candidates for cathodes in lithium ion batteries. Paper is lightweight, low-cost and flexible and provide many advantages over carbon nanotubes and graphene nanosheets.

The team led by Tuti Mariana Lim and Qingyu Yan, Nanyang Technological University, Singapore prepared bulky paper from HVO nanobelts, which they synthesised using a very efficient hydrothermal method (up to 99% yield). The nanobelts were several micrometers long, ~20nm in diameter and ~10nm in thickness. Flexible bulky-paper cathodes were made without the addition of binders.

“These flexible electrodes show high reversible Li storage capacities, good high C-rate performance with ~100% coulombic efficiency,” claim Lim and Yu.

“These promising properties of binder-free flexible electrodes can be an important step for development of rollable rechargeable battery with desired energy storage performance.”

Read the full paper for free upon a simple registration process:

Facile preparation of hydrated vanadium pentoxide nanobelts based bulky paper as flexible binder-free cathodes for high-performance lithium ion batteries

Xianhong Rui, Jixin Zhu, Weiling Liu, Huiteng Tan, Daohao Sim, Chen Xu, Hua Zhang, Jan Ma, Huey Hoon Hng, Tuti Mariana Lim and Qingyu Yan
RSC Adv., 2011, 1, 117-122

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Detecting vancomycin-resistant bug with DNA sensor

Scientists in China have improved the accuracy of DNA sensors for use in disease detection. 

DNA sensors detect pathogenic and genetic diseases by binding to target DNA strands that are related to the disease and giving a signal that shows how much of the DNA is present. Recent developments in the technology make use of gold nanoparticles functionalised with primer strands that bind to the DNA of interest. When the primers link to the targets, changes in the nanoparticles’ UV-visible absorbance provide a quantifiable signal. 

Ken Cham-Fai Leung from the Chinese University of Hong Kong and coworkers have modified this approach to improve the sensitivity and accuracy. 

Sensors employing gold nanoparticles randomly functionalised with single-stranded primer DNA can lead to primer strand cross-binding, resulting in agglomeration. This can entrap the nanoparticles and reduce the number of primer strands available for binding to the target DNA, leading to inaccurate changes in absorbance signals. 

Primer strands attached to a gold nanoparticle

The monofunctionalised nanoparticles form discrete nanostructures (left), whilst randomly functionalised nanoparticles tend to aggregate (right)

To combat this problem, Leung  and his team made monofunctionalised gold nanoparticles to which just one primer strand complementary to the target DNA was attached. The team used the nanoparticles to detect a DNA strand just 10 bases long, related to Enterococcus faecalis, a bacterium that can cause life-threatening infections. The shorter primer strands then needed to attach to the nanoparticles displayed reduced steric and electrostatic repulsions, decreasing the tendency for agglomeration. ‘Using these structurally well-defined, monofunctionalised gold nanoparticles will provide more quantitative results for DNA detection,’ says Leung. 

The nanoparticle complexes are soluble in organic solvent mixtures in which longer DNA sequences are typically denatured; using such solvents could provide novel approaches for gene delivery. 

‘The work has enriched our current understanding of DNA hybridisation in organic media, and it clearly shows good potential for future applications in biomedical research and new sensor developments,’ says Cong Yu, an expert in nucleic acid chemistry from the Changchun Institute of Applied Chemistry, China.   

Sarah Farley 

The above story was published in Chemistry World on the 7th October 2011: Detecting diseases with DNA sensors

The full article is free to download after a simple registration process:

DNA hybridization of pathogenicity island of vancomycin-resistant Enterococcus faecalis with discretely functionalized gold nanoparticles in organic solvent mixtures
Chun-Pong Chak, Josie M. Y. Lai, Kathy W. Y. Sham, Christopher H. K. Cheng and Ken Cham-Fai Leung, RSC Adv., 2011
DOI:10.1039/c1ra00304f, Advanced Article

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Quasicrystal clear for Nobel Academy

Congratulations to Professor Daniel Shechtman, Technion Israel Institute of Technology, Haifa, Israel, on winning the 2011 Nobel Prize in Chemistry for the discovery of quasicrystals!

“Contrary to the previous belief that atoms were packed inside crystals in symmetrical patterns, Mr. Shechtman showed that the atoms in a crystal could be packed in a pattern that could not be repeated,” said the Nobel Academy.

The latest articles on materials and crystal engineering published in RSC Advances can be freely downloaded:

Insight into the crystal synthesis, activation and application of ZIF-20, Beatriz Seoane, Juan M. Zamaro, Carlos Téllez and Joaquín Coronas, RSC Adv., 2011, 1, 917-922

Tin oxide nanocrystals: controllable synthesis, characterization, optical properties and mechanistic insights into the formation process, Anshu Singhal, Bhaskar Sanyal and Avesh K. Tyagi, RSC Adv., 2011, 1, 903-910

Structures, stabilities and electronic properties of graphdiyne nanoribbons, Hongcun Bai, Ying Zhu, Weiye Qiao and Yuanhe Huang, RSC Adv., 2011, 1, 768-775

Chemical reactions under autogenic pressure at elevated temperature to fabricate photo-luminescent Ga2O3 nanocrystals and their coatings, Pani P. George, Vilas G. Pol, Yuri Koltypin, Makluf Shirly Ben-David, I. Genish and Aharon Gedanken, RSC Adv., 2011, 1, 619-624

Network forming units in alkali borate and borophosphate glasses and the mixed glass former effect, Michael Schuch, Christian Trott and Philipp Maass, RSC Adv., 2011, Advance Article, DOI: 10.1039/C1RA00583A, Paper

Cu2O microcrystals: a versatile class of self-templates for the synthesis of porous Au nanocages with various morphologies, Xiaowang Liu, RSC Adv., 2011, Advance Article, DOI: 10.1039/C1RA00250C, Paper

Reduction of Cu2O nanocrystals: reactant-dependent influence of capping ligands and coupling between adjacent crystal planes, Qing Hua, Kai Chen, Sujie Chang, Huizhi Bao, Yunsheng Ma, Zhiquan Jiang and Weixin Huang, RSC Adv., 2011, Advance Article, DOI: 10.1039/C1RA00431J, Communication

Please note: The above articles can be read for free upon a simple registration process.

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RSC Advances sponsors young chemists at the Asian Chemical Congress

The Royal Society of Chemistry was proud to sponsor the workshop on frontiers in drug discovery research as well as two Young Chemists Awards at the 14th Asian Chemical Congress which was held in Thailand on the 5-8th September 2011. It was one of the largest chemical symposium in Asia with approximately 2000 delegates from over 30 countries (Japan, Taiwan, China, Korea, Malaysia, India, Brunei etc…).

Delegates gathered at the Queen Sikirit Convention Centre, in Bangkok, for four days of chemistry extravaganza. They were exposed to 13 parallel sessions covering a number of subject areas from materials and polymer chemistry to analytical and environmental chemistry, including physical, organic, inorganic and drug discovery sessions. The plenary talks included two Nobel Prize Winners: Ada E Yonath (Nobel Prize in Chemistry, 2009) and Yuan Tseh Lee (Nobel Prize in Chemistry, 1986).

RSC Advances was pleased to present two Young Chemists Awards to MISS SUJITTRA POORAHONG and MISS SALUMA SAMANMAN who presented work on the following:

Cauliflower polyaniline sensor arrays and its applications to detect hydrogen peroxide, S. Poorahong et al.

Highly sensitive label-free capacitive immunosensor based on layer-by-layer self-assembled gold nanoparticles, S. Samanman et al.

Sujittra Poorahong and Kathleen Too

Saluma Samanman and Kathleen Too

Both winners were from the Prince of Songkla University, Trace Analysis and Biosensor Research Center, Faculty of Science, Thailand. The analytical young chemists sessions were chaired by Professors Orawan Chailapakul (Chulalongkorn University), Chongdee Thammakhet (Prince of Songkla University), Gunter Grampp (Graz University of Technology , Austria) and Chutintorn Punwong (Prince of Songkla University). Many congratulations to the winners!

 

From left to right: Kathleen Too, Chongdee Thammakhet, Sujittra Poorahong, Saluma Samanman, Gunter Grampp, Chutintorn Punwong

 

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Welcome to Professor Matthias Epple, new Associate Editor for RSC Advances

Professor Matthias EppleWe’re delighted to welcome Professor Matthias Epple, from University of Duisburg-Essen, Germany, as an Associate Editor for RSC Advances. He will handle manuscripts in the areas of biomaterials, biomineralization and nanosciences.

Since obtaining his PhD in physical chemistry from the Technical University of Braunschweig in 1992, Professor Epple has worked at University of Washington (Seattle, USA), and the Universities of Hamburg and Bochum (Germany). In 2003, he was appointed chair of inorganic chemistry at the University of Duisburg-Essen, his current position.

His research interests are focused on the synthesis and biomedical application of inorganic materials (especially nanoparticles), and crystallisation phenomena and solid-state reactions. He is currently the President of the German Society for Biomaterials.

Professor Epple’s Editorial office is now open– and we look forward to receiving your submissions.  

Want to find out more about RSC Advances? Use this link

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RSC Advances issue 2 now online!

All RSC Advances articles published in 2011 and 2012 will be made free to access until December 2012. Please sign up to receive free access to the latest articles published in the journal.

Issue 2 has now been published online and consists of research from a wide spectrum of subject areas.  Whether you are a materials scientist, biologist, physicist or medicinal chemist, you are guaranteed to find articles of relevance to your specialist interests.

Noteworthy articles include:

Two unique (4,5,6)-connected 2D CdII coordination polymers based on the 5-nitro-1,2,3-benzenetricarboxylate ligand
Lu-Fang Ma, Jian-Hua Qin, Li-Ya Wang and Dong-Sheng Li
RSC Adv., 2011, 1, 180-183
DOI: 10.1039/C1RA00119A

One-pot alkaline vapor oxidation synthesis and electrocatalytic activity towards glucose oxidation of CuO nanobelt arrays
Tetsuro Soejima, Hitomi Yagyu, Nobuo Kimizuka and Seishiro Ito
RSC Adv., 2011, 1, 187-190
DOI: 10.1039/C1RA00109D

The flow of magnetic nanoparticles in magnetic drug targeting
Sibnath Kayal, Dipankar Bandyopadhyay, Tapas Kumar Mandal and Raju V. Ramanujan
RSC Adv., 2011, 1, 238-246
DOI: 10.1039/C1RA00023C

The electrogenerated chemiluminescence detection of IS6110 of Mycobacterium tuberculosis based on a luminol functionalized gold nanoprobe
Jie Jiang, Ying Chai and Hua Cui
RSC Adv., 2011, 1, 247-254
DOI: 10.1039/C1RA00206F

Facile synthesis of 5-(alkylidene)thiophen-2(5H)-ones. A new class of antimicrobial agents
Tore Benneche, Gunnar Herstad, Marianne Rosenberg, Synnøve Assev and Anne Aamdal Scheie
RSC Adv., 2011, 1, 323-332
DOI: 10.1039/C1RA00254F

Take advantage of our automated subject classification to view articles that are most relevant to you.

To be notified of our latest issue published, please sign up to our e-mail alert today!

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Where can I meet the RSC Advances team?

Over the coming months, members of the team will be at the following conferences where they will be happy to talk to you:

  • James Batteas, Associate Editor, will be at the Fall ACS meeting in Denver at the end of the month. Look for RSC Booth 1100! Lots of prizes to be won each day, incl. T-shirts, games & books.

 

 

  • Kathleen Too, Deputy Editor, travels to the 14th Asian Chemical Congress 2011 (14 ACC) taking place between 5-8 September 2011 in Bangkok, Thailand. Please contact us if you’d like to arrange a meeting.

 

  • Mike Ward, Chair of the Editorial Board, is attending the 3rd Asian Conference on Coordination Chemistry (ACCC3) in New Delhi, India at the end of October. An RSC Advances poster prize will be awarded at this meeting.

And look out for our eye-catching RSC Advances materials, appearing at a variety of conferences over the coming months.

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RSC Advances Issue 1 published

From Argentina to New Zealand, Korea to USA, scientists around the world have shown their support for RSC Advances by submitting their work. Our first issue is online now and access is free.*

Communications, full papers and reviews are all represented in the mix that encompasses all the main areas of the chemical sciences. But finding the articles that are most relevant to you won’t be a problem: our sophisticated behind-the-scenes topic modelling classifies the content into one or more of twelve subject categories, accessible via the subject tab on the website. 

Among the highlights in this issue:

Marcos Eberlin, who is one of RSC Advances’ Associate Editors, has demonstrated his support through publishing his work on charge-tagged N-heterocyclic carbenes.

Of the first issue Marcos commented: “Very nice collection indeed … The subject tab is superb!”

Plus, Editorial Board Chair Mike Ward and RSC Publishing Editor Sarah Ruthven share their aspirations for the journal in the Editorial

Let us know what you think of this first issue by adding your comments below.

And to be alerted to each new issue of the journal, sign up for e-alerts today. 

*Individuals can access the content by signing up for an RSC Publishing Personal Account. Existing institutional RSC journal subscribers, with registered IP, have automatic access. Other institutions can register for free access.

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RSC Advances poster prize winners

RSC Advances was pleased  to sponsor the 20th International Conference on the Chemistry of the Organic Solid State (ICCOSS XX), held on the 25-30 June 2011 in Bangalore, India.

The conference gave a broad overview of the recent progress in all aspects of organic solid state chemistry and generated productive discussions. Professor T N Guru Row, Associate Editor for RSC Advances and one of the organisers of the conference, described the meeting as a great success and a great opportunity for well-respected national and international leaders in the field of organic solid states to get together to discuss the advances in this area.

Professor Christer Aakeroy, Kansas State University, USA, and Associate Editor for our sister journal CrystEngComm, was the chair of the poster prize committee. The RSC Advances poster prizes were awarded to two young participants (see pictures below) at the conference namely:

  • Amit Delori who is working under the supervision of Professor Bill Jones (University of Cambridge, UK), on his research entitled: “Is Molecular Adduct Formation Predictable? A Case Study of Molecular Adducts of the Anti-Malarial Drug Pyrimethamine”.
  • S. Samai, who is working under the supervision of Professor K. Biradha (Indian Institute of Technology, Kharagpur, India), on his research entitled “Supramolecular Self-Assembly: The Formation of Organogel and Porous Solids”

RSC Advances congratulates the two poster prize winners.

Professor Christer Aakeroy and Amit Delori

Professor Christer Aakeroy and S. Samai

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Welcome to Professor Suning Wang: new Associate Editor for RSC Advances

RSC Advances is pleased to welcome Professor Suning Wang from Queen’s University, Canada, as the new Associate Editor handling manuscripts on inorganic and materials chemistry.

Professor Suning Wang obtained a Ph.D. degree in Chemistry at Yale University. She did postdoctoral research at Texas A&M University. She was a faculty member in the department of Chemistry and Biochemistry at the University of Windsor, Ontario, Canada for 6 years. In 1996, she moved to Queen’s University at Kingston, Ontario, Canada, where she is a professor and a Queen’s University research chair.

Her current research interests concern photophysical/photochemical properties and applications of organic and organometallic luminescent molecules especially those that have an organoboron chromophore and a metal ion. She is a fellow of the Chemical Institute of Canada since 2002. Her research achievements have been recognized by the Royal Society of Canada Rutherford memorial medal in Chemistry (2002) and the Alcan award of the Canadian Society for Chemistry (2007).

Professor Wang’s editorial office in Canada is now open for submission and we would welcome all papers in her areas of expertise as described above. Take this opportunity to submit your work to RSC Advances today!

P.S. RSC Advances is an international journal to further the chemical sciences. All articles published in 2011 and 2012 will be made free to access at NO cost to the authors or readers.

RSC Advances
is an online only journal and authors will benefit from:

  • Free use of colour
  • No page charges
  • No page limits
  • Free electronic reprints (pdf) of own paper
  • Electronic supplementary information
  • Free e-mail alerting and RSS news feeds service
  • Additional open access publishing options via RSC Open Science    
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