Journal of Materials Chemistry Blog

Materials made from Ti-incorporated into mesoporous silica have been synthesized using a one pot method by a team of scientists from Taiwan and Japan. The team studied that structure and properties of these materials as epoxidation catalysts. Fancy knowing more? Click on the link below to read the full article for free.

Shih-Yuan Chen, Chih-Yuan Tang, Jyh-Fu Lee, Ling-Yun Jang, Takashi Tatsumi and Soofin Cheng, J. Mater. Chem., 2011, DOI: 10.1039/C0JM03111A, Advance Article

This ‘Hot’ paper describes the development of a novel click chemistry approach for the modular construction of tuneable multichromophoric light emitters. To make these iridium complexes, one, two or three triazole–pyridine units were effectively built into the heteroaromatic macromolecule using versatile acetylene- and azide-functionalised precursors.

The approach described by the team from the Netherlands is of interest for the design and construction of various light-emitting materials by covalent linking of different chromophores, including versatile tuning of the material properties, using ‘click’ chemistry. One example of such an application was demonstrated; two iridium centres showing ‘yellow’ emission and one fluorene unit showing ‘blue’ emission were combined via the covalent linkage to provide a white-light emitter.

Interested in knowing more?  Read for free until January 18th.

Triazole–pyridine ligands: a novel approach to chromophoric iridium arrays 
Michal Juríček, Marco Felici, Pablo Contreras-Carballada, Ján Lauko, Sandra Rodríguez Bou, Paul H. J. Kouwer, Albert M. Brouwer and Alan E. Rowan
J. Mater. Chem., 2011, Advance Article
DOI: 10.1039/C0JM03117H, Paper

Thermal halogenation of a wide range of metal carbides provides a simple route to a class of so-called carbide-derived carbon (CDC) materials. The porosity of the CDCs, which is mainly in the microporous regime, may be modulated by the choice of metal carbide precursor and synthesis process, the maximum surface area achieved is only up to 2500 m²g⁻¹, which limits their use in gas storage or in electrochemical capacitor applications that require larger surface areas.

This Highlight article is focused on what has and can be done to enhance the textural properties of CDCs via further post-synthesis treatments and the ramifications of such modifications on their gas/energy storage capacity. The main developments in physical and chemical activation of CDCs and consequences on gas and energy storage are summarised by the authors from the University of Nottingham, UK, and Instituto Nacional del Carbón, Spain.

Interested in knowing more?  Read for free until January 14th.

Activation of carbide-derived carbons: a route to materials with enhanced gas and energy storage properties 
M. Sevilla and R. Mokaya
J. Mater. Chem., 2011, Advance Article
DOI: 10.1039/C0JM03347B, Highlight

The second issue of Journal of Materials Chemistry in 2011 is now online.  The front cover features a communication from Lifang Jiao and co-workers based at Nankai University in China.  The paper, entitled ‘Novel flower-like CoS hierarchitectures: one-pot synthesis and electrochemical properties’ describes the synthesis, by a facile solvothermal method, of novel 3D flower-like CoS hierarchitectures and CoS microspheres which display good electrochemical properties.

Thinking of submitting to Journal of Materials Chemistry in 2011?  Sumbit online here.

In this ‘Hot’ paper, Mark Green and co-workers from Kings College, London report the synthesis of small luminescent conjugated polymer nanoparticles and the role of poly(ethylene glycol) in the nanoparticle structure.  This is the first time that semiconducting polymer nanospheres (SPNs) on the scale of quantum dots have been made using miniemulsion methods.

SPNs have been made using miniemulsion methods previously but the resulting materials have been significantly larger than quantum dots.  Quantum dots are desirable as these are the nanomaterial of choice for cell imaging.  The SPNs were characterized by TEM, absorption and emission spectroscopy, they were found to be stable in solution for months and bright and are expected to be effective in various fluorescence applications.

Interested in knowing more? Read for free until 13th January 2011.

Luminescent quantum-dot-sized conjugated polymer nanoparticles—nanoparticle formation in a miniemulsion system
Zeina Hashim, Philip Howes and Mark Green
J. Mater. Chem., 2011, Advance Article
DOI: 10.1039/C0JM02935A, Paper