ChemComm celebrates its first Gold for Gold communication

A groundbreaking £1 million initiative to support British researchers

Eugen Stulz (University of Southampton) and colleagues are the first ChemComm authors to publish a communication as part of our Gold for Gold initiative.Gold Image

Their communication, entitled ‘A DNA based five-state switch with programmed reversibility’ is now free to access for all.

‘I’m delighted that Eugen’s communication is the first open access communication to be published in ChemComm using the RSC’s Gold for Gold programme,’  says Phil Gale, Head of Chemistry at the University of Southampton. ‘This open access programme will allow us to showcase our research to a much wider audience.’

Gold for Gold is an innovative initiative rewarding UK RSC Gold customers with credits to publish a select number of papers in RSC journals via Open Science, the RSC’s Gold Open Access option.

More information on Gold for Gold is available on our website. If you have any questions on the procedure, or are an interested customer from outside the UK, please contact goldforgold@rsc.org.

Also of interest:
Gold for Gold – First Open Access credit used by University of Hull

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Biocatalysis: an article collection

A collection of high impact articles focusing on biocatalysis, from the RSC’s Catalysis Science & Technology, Green Chemistry, RSC Advances, Organic & Biomolecular Chemistry (OBC) and ChemComm

Beers, wines and cheeses are enjoyed around the world today and have been for millennia. In fact the practices of brewing and cheese-making pre-date recorded history so it is difficult to accurately determine when we first started using naturally occurring enzymes and microorganisms to create valuable (and in this case, tastier!) products.

Biocatalysts are of course used in far more diverse applications than the creation of food-stuffs, including in many organic syntheses and in the generation of fine chemicals. Due to their natural design, they can offer superior selectivity for particular products and have a far lower environmental impact than many traditional catalysts. Our knowledge and understanding of biocatalysts has increased dramatically in the last few decades, which has allowed us to develop biologically modified and biomimetic catalysts for a range of applications. 

To keep you up to date with the latest advances in this rapidly expanding field we have collected together these high impact articles and made them free to access until the 31st October!

Click here for the full list of free articles

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Lewis acidity of metal ions investigated in the gas phase

In aqueous solutions metal ions can promote acidity via the hydrolysis reaction. This is measured by a hydrolysis constant, which has previously been correlated to the ratio of the ion’s charge to size. Unfortunately lead and tin stubbornly refuse to fit this correlation; additional factors must be at work.

Anthony Stace and team investigated further by studying the minimum number of water molecules needed to stabilise a dication complex in the gas phase against spontaneous hydrolysis (called Coulomb fission in the gas phase). They found an extraordinarily good correlation between the number of water molecules required and the metal ion’s hydrolysis constant in aqueous solution.

What about those stubborn dications, lead and tin? They fit within the trend, requiring a surprising 11 and 26 water molecules to stabilise them respectively. This work suggests that Lewis acidity of metal ions is determined, in part, by the requirement that the ions remain fully solvated.

Plot of acidity constant against minimum number of water molecules required to stabilise the complex against Coulomb fission.

To find out more, download the ChemComm article today.

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A look at Gregynog 2012

Gregynog secretary, Dr Dave Carbery, reflects on this year’s annual synthesis meeting

The annual Gregynog Synthesis Meeting was recently held at Gregynog Hall  (Thursday 13th to Saturday 15th September), amidst the stunning beauty of mid-Wales and accompanied by fair weather. A group of 55 chemists came together to discuss recent progress in organic synthesis. As befits such a broad remit, the range of stakeholders present was pronounced with academic, industrial and scientific publishing attendees all present. As synthesis is an enabling and under-pinning scientific discipline, it was perhaps not surprising to see the range of contexts in which speakers discussed their synthesis. Catalysis, methodology and natural product chemistry were not-surprisingly representative; however, the audience was also treated to medicinal, process and supramolecular chemistries.

The relaxed and residential character of this event helps to encourage a collegiate ethos, helping to welcome younger chemists into the wider synthesis community. Such an ethos facilitates the discussion of initial results on new and adventurous projects in a supportive environment. In this regard, the fresh-faced Dr David France (University of Glasgow) struck a chord with the audience through his imaginative Pd-catalysis work.

The meeting is structured around the complementary formats of a number of short “chalk+talk” presentations (15 minutes with lively discussion and questions) supporting the two main keynote speakers in the evening, one of which has travelled beyond these shores. These keynote speakers have the opportunity to convey what exactly has made them the international names they are. What does the genesis of an idea require? How do the independent research strands in a research group interact with each other? And, importantly for the younger colleagues, how are difficult scientific challenges conquered? The Thursday evening saw Prof Jonathan Clayden (University of Manchester)A slide from Prof Dirk Trauner's keynote talk present the Chemical Communications keynote talk and embraced the meeting’s ethos with a career spanning discussion of the intertwining chemistry problems his group have tackled. The Friday evening session had Prof Dirk Trauner (LMU, Münich) present the Nature keynote talk. Earlier in the meeting, a member of the organising committee had suggested that his talk would be all the better, fitting the meeting’s remit, if he presented lots of “failed reactions” as a vehicle to conveying how he tackled organic synthesis problems. In this respect, it was a delight to later find, in my opinion, the most visually striking slide in a chemistry presentation I have yet seen. Prof Trauner went the extra mile in passing on his undoubted experience in synthesis problem-solving with some exquisite answers and suggestions. These keynote talks, as indeed were the short presentations, were interspersed with comments, suggestions and questions from the floor, indicative of the discerning yet approachable audience.

Finally, the Dave Kelly cup is awarded annually to a chemist who has engaged the audience with difficult concepts in a concise manner, with clarity at the chalk board. This prize is awarded in memory of our colleague Dr Dave Kelly, who was, for many years, synonymous with this important pillar in the synthesis calendar. Without doubt, Dr Steve Goldup (QMUL) was the chemist who hit the spot in this regard. The cup is on the way to the East End as I type.

Posted on behalf of Dr David Carbery, University of Bath

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ChemComm and the chemistry-biology interface

The chemical sciences make a huge contribution to solving challenges in the biological sciences. 

So quite rightly, articles at the chemistry–biology interface make up an important part of ChemComm.   

Here’s a selection of some recent articles, all free to access until 19th October

Nucleic acid aptamers: an emerging frontier in cancer therapy
Guizhi Zhu, Mao Ye, Michael J. Donovan, Erqun Song, Zilong Zhao and Weihong Tan
Chem. Commun., 2012, DOI: 10.1039/C2CC35042D 

Picomolar level profiling of the methylation status of p53 tumor suppressor gene by label-free electrochemical biosensor
Po Wang, Hai Wu, Zong Dai and Xiaoyong Zou
Chem. Commun., 2012, DOI: 10.1039/C2CC35615E 

Oriented Immobilization of Oxyamine-Modified Proteins
Long Yi, Yong-Xiang Chen, Po-Chiao Lin, Hendrik Schroeder, Christof M. Niemeyer, Yaowen Wu, Roger S. Goody, Gemma Triola and Herbert Waldmann
Chem. Commun., 2012, DOI: 10.1039/C2CC35237K 

Colorimetric detection of single-nucleotide polymorphisms with a real-time PCR-like sensitivity
Wei Shen, Huimin Deng, Alan Kay Liang Teo and Zhiqiang Gao
Chem. Commun., 2012, DOI: 10.1039/C2CC35070J

A bioresponsive controlled-release biosensor using Au nanocages capped with an aptamer-based molecular gate and its application in living cells
Wei Wang, Tao Yan, Shibin Cui and Jun Wan
Chem. Commun., 2012, DOI: 10.1039/C2CC33165A

Cascade imaging of proteolytic pathway in cancer cell using fluorescent protein-conjugated gold nanoquenchers
Kyoungsook Park, Jinyoung Jeong and Bong Hyun Chung
Chem. Commun., 2012, DOI: 10.1039/C2CC35687B

Eager for more? 

Check out the Nucleic acids: new life, new materials web theme, jointly organised with OBC and RSC Advances.

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Glucometers altered to detect HIV

Glucometers used by diabetic patients can be altered to detect HIV-related DNA sequences, say scientists in China.

The commercially available personal glucometer has been the most successful point-of-care (POC) device up to date. But the glucometer only responds to glucose. Extending its use to monitoring different types of targets would potentially revolutionise POC technology.

The team used invertase, an enzyme that catalyses the hydrolysis of sucrose into glucose, to interpret DNA recognition events into readouts measurable by the glucometer.

They loaded nanoparticle amplification labels with invertase, which, through target/probe DNA hybridisations, catalysed the conversion of sucrose on the sensing surface to glucose. They could detect as low as 0.5pM of target DNA. While they demonstrate the method with HIV DNA, it could potentially used to detect different DNAs.

Graphical Abstract

 

Link to journal article
Sensitive point-of-care monitoring of HIV related DNA sequences with a personal glucometer
J Xu et al
Chem. Commun., 2012, DOI: 10.1039/c2cc35941c

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Micromotors with built in compasses

Iron containing microtubular engines can be magnetised and act as compass needles

Iron containing microtubular engines can be magnetised and act as compass needles

A collaboration between scientists in Germany and Singapore has produced a micromotor that can be controlled by a magnetic field.

The motors are microtubes that contain a platinum catalyst and iron. The catalyst reacts with hydrogen peroxide to produce a jet of oxygen bubbles to drive the tube forward and the iron allows the tubes to react to a magnet. Gaining control of the direction in which the tubes travel is the challenge, and now scientists have found a way to manipulate the direction using magnets. This is a step towards a future in which they could be used inside the body, as engines in nanoscale systems or for environmental remediation.

Martin Pumera, who is based at Nanyang Technological University, Singapore, and his team, worked with researchers from the Leibniz Institute for Solid State and Materials Research Dresden, Germany, to make the micromotors. First they deposited thin layers of titanium, iron, chromium and platinum on a support. Once the support was removed, the layers rolled into a tube. Next, the microtubes were made into permanent magnets, using a neodymium magnet, and put into a hydrogen peroxide solution to test their reaction to external magnets.

Read the full article in Chemistry World

Link to journal article
Micromotors with built-in compasses
G Zhao et al
Chem. Commun., 2012, DOI: 10.1039/c2cc35671f

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Improved organocatalyst

UK scientists have developed a scalable, resolution-free synthesis of a helical DMAP organocatalyst.

In 2011 Dave Carbery (University of Bath) and colleagues made a helicene catalyst that they say was the most active chiral DMAP-like nucleophilic catalyst (DMAP = 4-dimethylamino pyridine). It was an effective catalyst for the acylative kinetic resolution of chiral secondary alcohols. With it, the team achieved reactions on a gram scale using only 1mg of catalyst – a 0.05mol% loading. However, the catalyst needed HPLC resolution.

They are now able to make more than 1g of the helical DMAP without any resolution. They say that it is also possible to do late-stage functionalisation.

Link to journal article
Point-to-helical chirality transfer for a scalable and resolution-free synthesis of a helicenoidal DMAP organocatalyst
M R Crittall, N W G Fairhurst and D R Carbery
Chem. Commun., 2012, DOI: 10.1039/c2cc35583c

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Refinery test for mesostructured zeolite

The Y zeolite is used as a catalyst for fluid catalytic cracking. It has a high surface area and large pores and is thermally and hydrothermally stable. But scientists are working on improving the catalyst for a better performance. One reason is that the 7.4Å micropores are limited in terms of size of hydrocarbon that they can take in. The process involves diffusion of large hydrocarbon molecules into the crystals and diffusion of the desired intermediate cracking products (diesel or light oil, gasoline and liquefied petroleum gases) out.

Introducing wider pores allows large hydrocarbon molecules to go through the process. Scientists from Spain had recently carried out a templating process (using a surfactant) to introduce highly controlled mesoporosity into zeolites. This led to improved catalytic selectivity, in which more gasoline, light oil and liquefied petroleum gas were obtained.

The team have now scaled up the catalyst and tested its hydrothermal stability and catalytic cracking performance in a refinery. The catalyst showed much better product selectivity compared to the current catalyst, says the team.

Graphical Abstract

Link to journal article
A mesostructured Y zeolite as a superior FCC catalyst – from lab to refinery
J Garcia-Martinez, K Li and G Krishnaiah
Chem. Commun., 2012, DOI: 10.1039/c2cc35659g

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Nominations invited for ChemComm Emerging Investigator Lectureship 2013

Recognising and rewarding the very best emerging talent within the chemical sciences

We are delighted to invite nominations for ChemComm Emerging Investigator Lectureship 2013. The lectureship, which is awarded annually, will recognise an emerging scientist in the early stages of their independent academic career. 

To qualify
To be eligible for the ChemComm Emerging Investigator Lectureship, the candidate should have completed their PhD on or after 5th September 2004.

The candidate should also have published at least one article in ChemComm during the course of their independent career. 

Award details
The recipient of the award will be invited to present a lecture at three different locations over a 12 month period. It is expected that at least one of the locations will be a conference. The recipient will receive a contribution of £1500 towards travel and accommodation costs. S/he will also be presented with a certificate and be asked to contribute a ChemComm Feature Article.

Nominations
Those wishing to make a nomination should send the following details to the ChemComm Editorial Office by 7th December 2012

  • Recommendation letter, including the name, contact details and website URL of the nominee.  
  • A one page CV for the nominee, including their date of birth, summary of education and career, list of up to five independent publications, total numbers of publications and patents and other indicators of esteem and evidence of independence.
  • A copy of the candidate’s best publication to date (as judged by the nominator).
  • Two supporting letters of recommendation from two independent referees. These should not be someone from the same institution or the candidate’s post doc or PhD supervisor.

The nominator and independent referees are requested to comment on the candidate’s presenting skills. 

Please note that self nomination is not permitted.

Selection procedure
The ChemComm Editorial Board will draw up a short-list of candidates based on the information provided by the referees and nominator. Short-listed candidates will be asked to provide a supporting statement justifying why they deserve the award. The recipient of the award will then be selected and endorsed by the ChemComm Editorial Board. 

Previous winners

Hiromitsu Maeda

 

2012 Professor Hiromitsu Maeda (Ritsumeikan University, Japan) – he’ll be presented with his lecture certificate at ICPOC 21.
2011 Dr Scott Dalgarno (Heriot-Watt University, Edinburgh, UK) – Find out about his Emerging Investigator Lecture tour in China.
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