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Tomoki Ogoshi wins Cram Lehn Pedersen Prize 2013

Congratulations to Professor Tomoki Ogoshi (Kanazawa University, Japan), the winner of the 2013 Cram Lehn Pedersen Prize.

The annual prize, sponsored by ChemComm and named in honour of the winners of the 1987 Nobel Prize in Chemistry, recognises significant, original and independent work by emerging investigators in supramolecular chemistry.

This year the prize is awarded to Professor Ogoshi for his pioneering work in macrocyclic and supramolecular chemistry and, in particular, for his groundbreaking research on pillar[5]arenes, a new class of macrocyclic compounds.  “I’m really honoured to receive the 2013 Cram Lehn Pedersen Prize,” says Professor Ogoshi.  “Cram, Lehn and Pedersen were great pioneers in the synthesis of macrocyclic hosts, and thus receiving this prize is also a great honour for pillararene chemistry.  I hope this will someday place pillararenes alongside other well-known macrocyclic hosts.”

Professor Ogoshi will receive £2,000 and will present his award lecture at the 8th International Symposium on Macrocyclic and Supramolecular Chemistry (8-ISMSC) in Crystal City, Virginia, USA from 7-11 July 2013.  He will also speak at other events during the year– keep an eye on this blog for more details.

“With the introduction of a new class of macrocycles, the pillararenes, Professor Ogoshi has started another area of host-guest molecules,” says Professor Roger Harrison, Associate Professor at Brigham Young University and Secretary of the ISMSC International Scientific Committee.  He adds, “The over 90 publications on these molecules since they were introduced in 2008, show the fascination and possibilities these molecules afford.  Professor Ogoshi’s introduction of these new molecules, along with his insights, creativity, and persistence make him one of the most exciting and up-and-coming supramolecular chemists to follow.  I congratulate Prof. Ogoshi on receiving this award and look forward to seeing more of his discoveries.”

Pillar[5]arene structure

Pillararene structure

“Ogoshi has created a new class of easy-to-make macrocycles, pillar[5]arenes, with a novel cross section of properties,” says Professor Amar Flood (Indiana University), a member of the ISMSC International Committee and 2011 Cram Lehn Pedersen Prize winner.  “Ogoshi has highlighted the properties and features of pillararenes in a series of papers and we are now seeing many others in the field of supramolecular chemistry moving forwards with these compounds in their own research endeavors.”

Last year’s prize was awarded to Dr Jonathan Nitschke (University of Cambridge).

Early bird registration for 8-ISMSC closes on 15 April 2013, so do hurry and register online.  You can listen to Professor Ogoshi’s lecture, get to meet a mix of established and younger researchers in supramolecular and macrocyclic chemistry, and you may even submit an abstract to present a short talk or a poster to showcase your work.  ChemComm‘s own brilliant and dynamic Deputy Editor Jane Hordern will be at the symposium – let us know if you’ll be there, too.

Find out more about Professor Ogoshi’s innovative research by reading his recent articles in Chemical Science and in ChemComm:

Supramolecular polymers with alternating pillar[5]arene and pillar[6]arene units from a highly selective multiple host–guest complexation system and monofunctionalized pillar[6]arene
Tomoki Ogoshi, Hitoshi Kayama, Daiki Yamafuji, Takamichi Aoki and Tada-aki Yamagishi
Chem. Sci., 2012, 3, 3221-3226

Thermally responsive shuttling behavior of a pillar[6]arene-based [2]rotaxane
Tomoki Ogoshi, Daiki Yamafuji, Takamichi Aoki and Tada-aki Yamagishi
Chem. Commun., 2012, 48, 6842-6844

Ionic liquid pillar[5]arene: its ionic conductivity and solvent-free complexation with a guest
Tomoki Ogoshi, Naosuke Ueshima, Tada-aki Yamagishi, Yoshiyuki Toyota and Noriyoshi Matsumi
Chem. Commun., 2012, 48, 3536-3538

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Making Bispirin: A new drug to fight both indigestion and pain

Until now, drugs which fight gastrointestinal infections and those which treat acute inflammation have been found to interfere with each other.  For instance, people infected with the Helicobacter pylori bacterium have needed to deal with the additional risk of gastrointestinal bleeding associated with the use of aspirin and other inflammatory drugs.

Australian research chemists, led by Philip C. Andrews of Monash University, have designed a new drug which treats gastrointestinal infections and acute inflammation at the same time.  They have successfully synthesized bispirin, a bismuth acetylsalicylate complex which combines the effectiveness of bismuth carboxylate compounds as anti-infection agents with that of acetyl­salicylic acid (aspirin) as an anti-inflammatory drug.  Their initial tests have shown that bispirin’s antibacterial effects are comparable or better than those of current bismuth drugs, and investigations of bispirin’s anti-inflammatory activity are currently in progress.

Making Bispirin_graphical abstract

This journal article has also been recently featured on C&ENread it here.

Read this ‘HOT’ ChemComm article in full:

Philip C. Andrews, Victoria L. Blair, Richard L. Ferrero, Peter C. Junk and Ish Kumar
Chem. Commun., 2013, 49, 2870-2872
DOI: 10.1039/C3CC40645H

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Ready to order? Yes, I’ll have the extra cold superconducting penne, please…

Written by guest web-writer Kevin Murnaghan.

In this highly original work, researchers from the Complex Functional Materials Group at the University of Bristol and the Superconductivity and Magnetism Group at the University of Warwick have used off-the-shelf, supermarket pasta as a sacrificial template for the production of a variety of superconducting wires, tubes and spirals.  They have even made a superconducting ‘jolly roger’ skull and crossbones.

Here’s how: The pasta was pre-washed to remove impurities and then rehydrated in a solution containing a mixture of nitrates of yttrium, barium and copper. A slight excess of barium nitrate was used to make sure the desired superconducting material YBa2Cu2O7-x phase (Y123) was attained. Via a calcination process the superconducting pasta shapes were produced, removing the organic material of the sacrificial template and neatly retaining the macroscopic shape of the template.

C3CC38271K_graphical abstract

‘Chemical black pepper and parmesan’ were provided by the use of silver nitrate in the process, which boosts electrical and structural properties. Without using this salt, structures formed are brittle, but with it, compressive strength of the shapes doubled in strength from 0.76 to 1.56 MPa.  This helped counteract the effect of porosity formed from the outgassing of the sacrificial pasta during the calcination process.

Interestingly, the pasta had its own influence on the properties of the material.  Starch-mediated reduction of Ag(I) to Ag(0) is the reason for the dark colour of the materials formed, and trace transition metals in the foodstuff were found to have an effect on electrical and superconducting properties.

Critical temperatures, Tc and current densities, Jc, in early samples were found to be low, relative to typical Y123 type superconductors when silver was not included in the synthesis, and were markedly improved when it was.  Further improvements to the superconductivity of the spaghetti-based replicas were achieved via sintering and annealing.  This work represents a highly cost-effective route to a range of superconducting materials with macroscopic architectures, compared with current state of the art processes such as CVD or PLD.  Future work will focus, in part, on further densification of the product, and purity of the sacrificial template.  Further fascinating information is provided in the electronic supplementary information.  Buon appetito!

C3CC38271K_coverRead this ChemComm cover article today:

Designed 3D architectures of high-temperature superconductors

David C. Green, Martin R. Lees and Simon R. Hall
Chem. Commun., 2013,49, 2974-2976
DOI: 10.1039/C3CC38271K

Kevin Murnaghan is a guest web-writer for Chemical Communications. He is currently a Research Chemist in the Adhesive Technologies Business Sector of Henkel AG & Co. KGaA, based in Düsseldorf, Germany. His research interests focus primarily on enabling chemistries and technologies for next generation adhesives and surface treatments. Any views expressed here are his personal ones and not those of Henkel AG & Co. KGaA.

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11th International Conference on Materials Chemistry (MC11)– Registration now open!

We are delighted to announce that registration for the 11th International Conference on Materials Chemistry (MC11) is now open.

Why take part in this conference?

In the 20th year of this international Materials Chemistry conference series, this meeting will bring together researchers from across this exciting field to discuss four key areas of application of materials chemistry:

  • Energy Materials – including all aspects of Materials Chemistry related to energy generation, conversion and storage.
  • Environmental Materials – the design, synthesis and applications of materials that facilitate processes to provide a sustainable environment.
  • Biomaterials – materials for tissue engineering and healthcare, green biomaterials and advanced synthesis methods of biomaterials.
  • Electronic, Magnetic and Optical Materials – encompassing inorganic, organic, hybrid and nano materials, soft matter and interfaces.

Registering early guarantees you an early bird discount of £50 – so register now!  And you can showcase your own work by presenting a poster.

MC11 will appeal to academic and industrial scientists working on the chemistry, physics and materials science of functional materials.  Come and hear the best in the field and take advantage of many opportunities for discussion with other researchers in materials chemistry.

For more information visit: http://rsc.li/mc11

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Penny Brothers joins ChemComm as Associate Editor

ChemComm warmly welcomes Professor Penny Brothers (University of Auckland, New Zealand) as a new Associate Editor. 

Penny Brothers is now accepting submissions to ChemComm in the areas of porphyrin chemistry, the main group elements and organometallic chemistry.  Her current research interests also include the chemistry of new sustainable materials and inorganic medicinal chemistry. 

Submit your next top-notch, high-impact Communication to Penny Brother’s Editorial Office.

Biography

Penny Brothers was born and grew up in Auckland, New Zealand, and completed her BSc and MSc(Hons) degrees in chemistry at the University of Auckland.  In 1979 she was awarded a Fulbright Fellowship and set off for Stanford University to begin a PhD in chemistry under the supervision of Professor Jim Collman.  Her PhD thesis, and much of her subsequent research work, has centered around the chemistry of porphyrin complexes.Professor Penny Brothers

In 1986 she returned to Auckland and spent two years working as a postdoctoral fellow with Professor Warren Roper in the Department of Chemistry, focussing on organometallic chemistry.  In 1988 she took up her current academic position at the University of Auckland.

She has been a visiting scientist at Los Alamos National Laboratory (2003, 2005, 2006) and a visiting professor at the University of California at Davis (1993), the University of Heidelberg (2003) and the University of Burgundy (2004, 2006).  She has been awarded a Fulbright Senior Scholar Award for 2007.

Her current research brings together her interests in porphyrin chemistry, the main group elements and organometallic chemistry.  She investigates how the porphyrin ligand can be used to modify the chemistry of elements such as boron and bismuth, and as a ligand in complexes containing unusual chemical bonds between transition metal and main group elements.  She has a number of research collaborations in NZ and internationally.

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