Four Hot Articles from the upcoming Li-ion Batteries themed issue.

Journal of Materials Chemistry is publishing a themed issue on Advanced Materials for Lithium Batteries with guest editors Prof M. Saiful Islam (Bath, UK) and Prof Linda Nazar (Waterloo, Canada). Here’s four of Hot Articles to give you just a taste of what the issue will include. If you’d like to know when the issue is published why not sign-up for the Journal of Materials Chemistry  table of contents alert or follow the journal on Twitter.  

Graphical abstract: Benefits of N for O substitution in polyoxoanionic electrode materials: a first principles investigation of the electrochemical properties of Li2FeSiO4−yNy (y = 0, 0.5, 1)Benefits of N for O substitution in polyoxoanionic electrode materials: a first principles investigation of the electrochemical properties of Li2FeSiO4−yNy (y = 0, 0.5, 1). M. Armand and M. E. Arroyo y de Dompablo used first principles calculations to investigate the effect of N for O substitution on the electrochemical properties of Li2FeSiO4. Armand and Arroyo y de Dompablo suggest that O + N-based scaffold structures could be the next frontier in electrode design. J. Mater. Chem., 2011, DOI:10.1039/C0JM04216A (Advance Article)

Graphical abstract: Effect of ball-milling and lithium insertion on the lithium mobility and structure of Li3Fe2(PO4)3Effect of ball-milling and lithium insertion on the lithium mobility and structure of Li3Fe2(PO4)3. Clare P. Grey, Jordi Cabana and co-workers use Li NMR to show that mechanical milling enhances the mobility of Li in Li3Fe2(PO4)3. They attribute the enhancement to both a reduction of the diffusion lengths and an increase in the intrinsic mobility of lithium in the sample. J. Mater. Chem., 2011, DOI:10.1039/C0JM04197A (Advance Article)

Graphical abstract: Direct and modified ionothermal synthesis of LiMnPO4 with tunable morphology for rechargeable Li-ion batteriesDirect and modified ionothermal synthesis of LiMnPO4 with tunable morphology for rechargeable Li-ion batteries. A team of scientists based in France have used ionothermal synthesis, using pristine ionic liquids as reacting media, to produce LiMnPO4. The team report three modified versions of ionothermal synthesis. The resulting ionic liquids synthesized LiMnPO4 was found to deliver reversible capacity close to 100 mA h g−1 with excellent cycling stability. J. Mater. Chem., 2011,  DOI:10.1039/C0JM04423G (Advance Article)

Graphical abstract: The influence on Fermi energy of Li-site change in LizTi1−yNiyS2 on crossing z = 1The influence on Fermi energy of Li-site change in LizTi1−yNiyS2 on crossing z = 1. In this Hot Paper a team at the University of Texas at Austin, US, monitored the change in EF within the Ti(IV)/Ti(III) mixed-valence state of Lix(Ti0.9Ni0.1)S2 as x is increased through x = 1 in order to determine how much of the shift of EF is due to the on-site electron–electron electrostatic energy U of the narrow band Ti-3d electrons and how much is due to the shift of the Li in the interlayer space from octahedral to tetrahedral sites. J. Mater. Chem., 2011, DOI:10.1039/C0JM04227G (Advance Article)

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Nanoflowers for sunlight self-cleaning coatings

In this hot article Shuyan Gao, Kai Jiang and co-workers create flower-like Ag/CuO micro/nanostructures with superhydrophilicity and sunlight self-cleaning properties. The “flowers” were synthesized through a facile biomimetic hydrothermal method. The team claim that this research could pave the way for designing useful nanoscale building blocks for photocatalytic applications, especially as self-cleaning photovoltaic coatings.

Graphical abstract: Biomolecule-assisted in situ route toward 3D superhydrophilic Ag/CuO micro/nanostructures with excellent artificial sunlight self-cleaning performance

Read the article for free until 14th April.

Biomolecule-assisted in situ route toward 3D superhydrophilic Ag/CuO micro/nanostructures with excellent artificial sunlight self-cleaning performance. Shuyan Gao, Zhengdao Li, Kai Jiang, Haibo Zeng, Liang Li, Xiaosheng Fang, Xiaoxia Jia and Yanli Chen, J. Mater. Chem., 2011, DOI:10.1039/C0JM04533K (Advance Article)

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Hot Article: Mixed-metal substrates for applications in metal-enhanced fluorescence

Researchers from Ben-Gurion University of the Negev and University of Maryland Baltimore County have shown that mixed metal substrates made from aluminium and silver nanodeposits can enhance luminescence.

This enables enhanced luminescence from UV protein residues, solvents and traditional visible fluorophores. The wavelength enhancement range is much broader than silver alone and other metal enhanced fluorescence (MEF) substrates reported thus far. These results indicate that mixed metal surfaces are a better choice for MEF applications than the customary single metal surfaces. Films made in such a way could prove to be very useful for various biomedical assays that utilise fluorescence.

Interested to know more? Why not read the full article for free: K. Golberg, A. Elbaz, Y. Zhang, A. I. Dragan, R. Marks and C. D. Geddes, J. Mater. Chem., 2011, DOI: 10.1039/C0JM04311G (Advance Article)

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Looking for a summer job? Student placements in scientific publishing or as a science writer

RSC Publishing is offering two fantastic opportunities to gain experience in scientific publishing over the summer.

Science Writer Internship
The RSC is looking for a student member to work as a science writer in our editorial office this summer. You will gain experience working for two of our publications: Chemistry World and Education in Chemistry. Full details here:

Summer Placement – Scientific Publishing
This is a great opportunity to gain experience over an 8-12 week period of working with dynamic journals teams and academics to ensure the RSC publishes leading journals for the chemical science community worldwide. Full details here:

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Hot Article: Arene effects on difluoroboron β-diketonate mechanochromic luminescence

Researchers from University of Virginia have investigated the effects of aromatic substituents in boron diketones.

All of the dyes studied except BF2mbm (i.e. those with aromatic rather than aliphatic substitution) showed emission changes upon mechanical perturbation. Aromatics with increased π conjugation led to more dramatic, red-shifted fluorescence. Their recovery is also significantly affected by the aromatic substituents.

Interested to know more? Why not read the full article for free:  T. Liu, A. D. Chien, J. Lu, G. Zhang and C. L. Fraser, J. Mater. Chem., 2011, DOI: 10.1039/c0jm04326e (Advance Article)

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J. Mater. Chem. paper in Chemistry World: Out of the blue – a new phosphor for flat screen displays

Phosphor for flat screen displaysMaterials chemists in China have developed a compound that they believe should improve the quality of field emission displays (FEDs), bringing applications a step closer. FEDs have, for a number of years, been a promising technology for flat panel displays, but progress has been hampered by the display quality.

Jun Lin at the Chinese Academy of Sciences, Changchun, and colleagues developed a phosphor with promising colour properties for FED applications…  Read the full story in Chemistry World.

Original research article here: Cyan-emitting Ti4+– and Mn2+-coactivated Mg2SnO4 as a potential phosphor to enlarge the color gamut for field emission display. Guogang Li, Xiao Zhang, Chong Peng, Mengmeng Shang, Dongling Geng, Ziyong Cheng and Jun Lin, J. Mater. Chem., 2011, DOI: 10.1039/c1jm00057h

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Self Organization of Nanoparticles Themed Issue: Submission Deadline, 17th April

Don’t forget Journal of Materials Chemistry is publishing a themed issue on Self-Organization of Nanoparticles with with Professor Nicholas A. Kotov (University of Michigan, USA) as Guest Editor.

The deadline for the receipt of manuscripts for this themed issue is 17th April 2011.

Manuscripts can be submitted using our online submission service. Please indicate on you submission letter that your manuscript is submitted in response to the call for papers for the Self-Organization of Nanoparticles themed issue.

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Hot Article: Ultrathin organic single crystals: fabrication, field-effect transistors and thickness dependence of charge carrier mobility

Researchers at Nanyang Technological University have synthesised organic single crystals with thicknesses ranging from a few monolayers to micrometres by an “Organic Crystal Cleavage” method.

Ultrathin F16CuPc and pentacene single crystal field-effect transistors were subsequently fabricated and the corresponding thickness dependence of mobility was investigated. The charges induced in the metal–semiconductor interface reduced the contact barrier. This, in turn, allowed measurement of the values of mobility that precisely reflected the real transport properties of organic semiconductors.

Interested to know more? Why not read the full article for free: H. Jiang, K. Jie Tan, K. K. Zhang, X. Chen and C. Kloc, J. Mater. Chem., 2011, DOI: 10.1039/c0jm04383d (Advance Article)

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Hot Article: Enhanced thermal conductivity over percolation threshold in polyimide blend films containing ZnO nano-pyramidal particles

The thermal conductivities of blend-PI films containing ZnO nanoparticles have been investigated by researchers from Tokyo Institute of Technology for future electric and electronic applications.

The blend films obtained were composed of sulfur- and fluorine- containing PIs and exhibited distinct microphase-separated structures with a vertical double percolation morphology. These films had two principle advantages over conventional homo-PI systems. The smaller ZnO content in the blend-PI films conferred a larger thermal conductivity. Additionally, the thermal conductivity was larger in pristine (without ZnO nanoparticles) blend-PI films than homo-PI films. A higher thermal conductivity is advantageous for application in polymer dielectric materials, as it allows for better flexibility, light weight and higher electric insulation properties.

Interested to know more? Why not read the full article for free: D. Yorifuji and S. Ando, J. Mater. Chem., 2011, 21, 4402.

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Hot Article: Dithienopyrrole–quinoxaline/pyridopyrazine donor–acceptor polymers: synthesis and properties

Researchers from Georgia Institute of Technology and University of Washington have synthesised dithienopyrrole–quinoxaline/pyridopyrazine donor–acceptor polymers by Stille coupling reactions.

It was found that the pyridopyrazine moiety is a stronger acceptor than quinoxaline and that the extended benzophenazine and dibenzopyridoquinoxaline species are stronger acceptors than quinoxaline and pyridopyrazine, respectively. When used in field effect transistors, average hole mobilities of up to ca 3.0 × 10–4 cm2 V–1 s–1 were obtained. Bulk heterojunction photovoltaic devices made from blends of the benzo[a,c]phenazine-based polymer gave average power conversion efficiencies of 1.4%.

Interested to know more? Why not read the full article for free: X. Zhang, J. W. Shim, S. P. Tiwari, Q. Zhang, J. E. Norton, P.-T. Wu, S. Barlow, S. A. Jenekhe, B. Kippelen, J.-L. Brédas and S. R. Marder, J. Mater. Chem., 2011, DOI: 10.1039/c0jm04290k (Advance Article)

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