Archive for September, 2010

Carbon nanostructures for solar energy conversion schemes

IYC 2011Developing environmentally friendly, renewable energy is one of the challenges to society in the 21st century. One of the renewable energy technologies is solar energy conversion — a technology that directly converts daylight into electricity. 

In their ChemComm Highlight in Chemistry, Dirk Guldi and Vito Sgobba survey recent breakthroughs in implementing carbon nanostructures — fullerenes, carbon nanotubes, carbon nanohorns and graphene — into solar energy conversion schemes, that is, bulk heterojunction and dye-sensitised solar cells. Read the article today and let us know what you think by leaving a comment.

Carbon nanostructures

2011 is the International Year of Chemistry (IYC 2011), a worldwide celebration of the achievements of chemistry and its contributions to the well-being of humankind. ChemComm is marking IYC 2011 by publishing a series of ‘Highlights in Chemistry’. For more information visit the the ChemComm and IYC 2011 website.

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ChemComm Symposium – Day 1

Day one of the ChemComm symposium was packed with 12 talks and a two hour poster session. A good hearty breakfast was essential to ensure energy levels remained high. At breakfast I was joined by Luet Wong, ChemComm Associate Editor Jonathan Sessler and the co-organiser of the event, Wonwoo Nam. Jonathan managed to work the conversation round to the topic of beer and its importance in collaborative research – a theme that would reappear later in the day! I also received an invitation to say a few words, as Editor, at the Korean ChemComm symposium. I accepted with pleasure, although I am sure I will be be less enthusiastic on Thursday with the onset of nerves.      

Following opening remarks from organiser Professor Shunichi Fukuzumi, Gary Brudvig (Yale) discussed model systems for water splitting based on photosystems 2 (it would be highlighted later that these systems currently rank as some of the best examples in the literature). My favourite talk of the day was given by Craig Hill (Emory). Craig discussed his cobalt polyoxometalates and highlighted that these are the most effective water splitting catalysts around to date, also benefitting from the fact that they are homogenous and simple to produce. He also alluded to new cobalt catalysts that have been produced in his lab, yet to be published, that are producing even more spectacular results.

Jonathan Sessler

Is that water or sake Jonathan's about to drink?

After such a great day of science there was only one way to finish: a speakers dinner consisting of 12 courses lubricated with fine Japanese beer and sake. En route to the dinner I shared the lift with 15+ Japanese ladies who appeared to be at a convention in the hotel. A surreal experience where I felt like a giant!

At dinner, Jonathan Sessler continued to highlight the importance of alcohol in research. I am sure this will not be the last time we hear this…. It should be added that such a philosophy has been wonderfully supported by our hosts already. The dinner ended with a group photo and three cheers for Wonwoo Nam and Shunichi Fukuzumi led by Harry Gray. A fine end to an excellent first day.

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Top ten most accessed articles in August

This month sees the following articles in ChemComm that are in the top ten most accessed:-

Potassium carbonate-silica: a highly effective stationary phase for the chromatographic removal of organotin impurities 
David C. Harrowven, Dennis P. Curran, Sarah L. Kostiuk, Ian L. Wallis-Guy, Sally Whiting, Kerri J. Stenning, Bencan Tang, Emma Packard and Lana Nanson 
Chem. Commun., 2010, 46, 6335 – 6337, DOI: 10.1039/c0cc01328e

Hybrid nanomaterials for biomedical applications 
Kathryn M. L. Taylor-Pashow, Joseph Della Rocca, Rachel C. Huxford and Wenbin Lin 
Chem. Commun., 2010, 46, 5832 – 5849, DOI: 10.1039/c002073g, Feature Article 

A highly sensitive, selective, colorimetric and near-infrared fluorescent turn-on chemosensor for Cu2+ based on BODIPY 
Shouchun Yin, Volker Leen, Sven Van Snick, Noël Boens and Wim Dehaen 
Chem. Commun., 2010, 46, 6329 – 6331, DOI: 10.1039/c0cc01772h 

Pd nanoparticles in silica hollow spheres with mesoporous walls: a nanoreactor with extremely high activity 
Zhe Chen, Zhi-Min Cui, Fang Niu, Lei Jiang and Wei-Guo Song 
Chem. Commun., 2010, 46, 6524 – 6526, DOI: 10.1039/c0cc01786h 

Immunosensor for the detection of cancer biomarker based on percolated graphene thin film 
Minghui Yang and Shaoqin Gong 
Chem. Commun., 2010, 46, 5796 – 5798, DOI: 10.1039/c0cc00675k 

High-yield exfoliation of three-dimensional graphite into two-dimensional graphene-like sheets 
Eun-Kyoung Choi, In-Yup Jeon, Seo-Yoon Bae, Hwa-Jung Lee, Hyeon Suk Shin, Liming Dai and Jong-Beom Baek 
Chem. Commun., 2010, 46, 6320 – 6322, DOI: 10.1039/c0cc00753f 

A photoelectrochemical device for visible light driven water splitting by a molecular ruthenium catalyst assembled on dye-sensitized nanostructured TiO2 
Lin Li, Lele Duan, Yunhua Xu, Mikhail Gorlov, Anders Hagfeldt and Licheng Sun 
Chem. Commun., 2010, DOI: 10.1039/c0cc01828g 

High quality graphene with large flakes exfoliated by oleyl amine 
Jian Zheng, Chong-an Di, Yunqi Liu, Hongtao Liu, Yunlong Guo, Chunyan Du, Ti Wu, Gui Yu and Daoben Zhu 
Chem. Commun., 2010, 46, 5728 – 5730, DOI: 10.1039/c0cc00954g 

Synthesis and characterization of gold-deposited red, green and blue fluorescent silica nanoparticles for biosensor application 
Kyoung G. Lee, Rinbok Wi, Tae Jung Park, Sun Hong Yoon, Jaebeom Lee, Seok Jae Lee and Do Hyun Kim 
Chem. Commun., 2010, 46, 6374 – 6376, DOI: 10.1039/c0cc00762e 

Monodispersed molecular donors for bulk hetero-junction solar cells: from molecular properties to device performances 
Silvia Colella, Marco Mazzeo, Roberto Grisorio, Eduardo Fabiano, Giovanna Melcarne, Sonia Carallo, M. Daniela Angione, Luisa Torsi, Gian Paolo Suranna, Fabio della Sala, Piero Mastrorilli and Giuseppe Gigli 
Chem. Commun., 2010, 46, 6273 – 6275, DOI: 10.1039/c0cc01229g 

Why not take a look at the articles today and blog your thoughts and comments below.

Fancy submitting an article to ChemComm? Then why not submit to us today or alternatively email us your suggestions.

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ChemComm Symposia – the journey

As I set off for Japan and Korea I was eagerly looking forward to my first ChemComm symposium as Editor. At Heathrow I met up with Dr Luet Wong (University of Oxford), a speaker at the symposium, and the long trip to Osaka began (made even longer by a one hour delay for refuelling as we sat on the plane).

On arrival in Japan, the weather was grim, with low cloud and heavy rain – just what you need after a 12 hour flight. But on the plus side, the three hour journey from Tokyo to Osaka on the Bullet train was super efficient and on time to the second…just the Japanese way.

In Osaka it continued to rain contrary to the weather predictions. The hotel is fine; however, it amazes me, when WiFi is available in all McDonalds around the world, that a Sheraton hotel in a major city can not provide such a service.

Jet lag kicking in, we ventured out for dinner. With much choice, but everything in Japanese, the easy way is to just look at the pictures and plastic replicas. Despite the availability of a variety of Japanese restaurants, our final selection was a Chinese restaurant on the 12 floor of a department store. The food was great but after choosing a bottle of Chateau Bel Air, (from France and not Beverley Hills), the chilled glasses were sent back for room temperature equivalents. Alas, the wine was ice cold when delivered!

The final course of the meal was duck: four pieces of duck, enough for two, absolutely…. Unfortunately not, four pieces of duck skin, beautifully mounted on individual prawn crackers, great value at 2700 Yen (about £20).

Despite the duck, it was an excellent meal. Sensibly I retired to bed early in anticipation of a packed first day of stimulating lectures ahead…..

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Mimicking transmembrane proteins

Japanese scientists have made a simple structural mimic of multipass transmembrane (MTM) proteins, one of the most common types of membrane protein.

Kazushi Kinbara, at Tohoku University, and colleagues made alternating amphiphilic multiblock molecules consisting of linearly connected hydrophilic and hydrophobic moieties. They found that the hydrophobic units stacked face-to-face  to give folded structures, like those of MTM proteins.

Graphical abstract: Mimicking multipass transmembrane proteins: synthesis, assembly and folding of alternating amphiphilic multiblock molecules in liposomal membranes

Find out more in their ChemComm communication, free to download until 25th October. And why not mimic the authors and submit your best research to ChemComm?

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Surface plasmon resonance measures biomolecular interactions

Calcium plays a central role in many signalling pathways, including neuronal and sensory function. Now scientists in Germany have shown that surface plasmon resonance can be used to monitor Ca2+-induced conformational changes in a Ca2+-sensor protein immobilised on a chip.

Graphical abstract: Quantitative detection of conformational transitions in a calcium sensor protein by surface plasmon resonance

Daniele Dell’Orco and colleagues at the University of Oldenburg, Germany describe their study in a recently published ChemComm communication. Download the article for free until 25th October.

You can submit your own high impact research to ChemComm using our online submission system.

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Graphene oxide nanosheets reveal their colourful side

Chinese scientists have transformed graphene oxide (GO) nanosheets into efficient fluorescent emitters by functionalising their surfaces with alkylamines. The fluorescence quantum yields of the bright blue fluorescent GOs are enhanced up to 600 times compared with the original GO.

Graphical abstract: Highly efficient photoluminescent graphene oxide with tunable surface properties

Read more about Zhongping Zhang and colleague’s findings in their ChemComm communication, which is free to access until 25th October. And if you think your research presents some bright ideas, submit it to ChemComm today.

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Battle of bond formations

Anionic boron- and gallium-containing N-heterocyclic carbene (NHC) analogues display contrasting reactivity towards the half-sandwich titanium complex. Where one reacts to form the first example of a titanium gallyl compound, the other reaction (with boron NHC) generates a dearomatised pyridyl fragment.

Cameron Jones and his team from Monash University have collaborated once again with Simon Aldridge, Philip Mountford and colleagues at Oxford University, publishing their results in ChemComm. Why not download the article today and blog some comments below? The article is free to access until the 8th October 2010.

 

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Printing microelectrodes

Tin-doped Indium oxide, a widely used conductor in optoelectronic devices, has been used to form microelectrodes that can be patterned in both 1D and 3D arrays, by direct-write assembly of sol–gel inks with varying concentration.

Jennifer A. Lewis and co-workers at the University of Illinois at Urbana-Champaign, in the US, have published their results in ChemComm and they believe the approach may open up new avenues for fabricating printed electronic and optoelectronic devices in unusual layouts.

Fancy reading more? Then why not download the article today and blog some comments below? This article is free to access until the 8th October.

 

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Cold-welding for gold

 

Large-scale fabrication of highly ordered gold nanochannel monolayers has been demonstrated by scientists in Japan. Yingpu Bi and Jinhua Ye fron the National Institute for Materials Science, in Tsukuba, have used the galvanic replacement reaction over aligned silver nanowire arrays, which can be employed as a simple and powerful cold-welding technique to make these gold nanochannels.

Why not read the article today and blog your thoughts below? Published in ChemComm, this communication is free to access until the 8th October.

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