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Contents list for Journal of Materials Chemistry, issue 48, 2008
Front cover
J. Mater. Chem., 2008, 18, 5845
DOI: 10.1039/b819423h
Contents
J. Mater. Chem., 2008, 18, 5847
DOI: 10.1039/b820630a
Feature Article
Shape-dependent electrocatalytic activity of platinum nanostructures
Mahima Subhramannia and Vijayamohanan K. Pillai,
J. Mater. Chem., 2008, 18, 5858
DOI: 10.1039/b811149a
Shape-dependent electrocatalysis has received much recent attention due to the influence of shape on the kinetics of various structure-sensitive reactions. We highlight recent advances in the synthesis and characterization of various Pt nanostructures, along with their applications as electrocatalysts for several reactions relevant for micro-fuel cells.
Papers
Stable nanoporous alkali halide polymorphs: a first principles bottom-up study
W. Sangthong, J. Limtrakul, F. Illas and S. T. Bromley,
J. Mater. Chem., 2008, 18, 5871
DOI: 10.1039/b809129c
New zeolitic-like nanocage-based polymorphs of the alkali halides are shown to be only marginally metastable to known dense phases.
Air stable Al2O3-coated Li2NiO2 cathode additive as a surplus current consumer in a Li-ion cell
Min Gyu Kim and Jaephil Cho,
J. Mater. Chem., 2008, 18, 5880
DOI: 10.1039/b814161d
Highly air stable Al2O3-coated Li2NiO2 cathode additive with a charge capacity of 420 mAh/g is prepared by Al iso-propoxide coating on Li2NiO2 at 600 °C for 10h under N2 atmosphere. A Li-ion cell with the 4 wt% Al2O3-coated Li2NiO2 additive shows no explosion even at 12V.
Large antibiotic molecule diffusion in confined mesoporous silica with controlled morphology
Valentina Cauda, Barbara Onida, Barbara Platschek, Lea Mühlstein and Thomas Bein,
J. Mater. Chem., 2008, 18, 5888
DOI: 10.1039/b805395b
The uptake and release of the large antibiotic molecule vancomycin was studied with low-dimensional mesoporous silica model systems. Mesopore diameter and tortuosity greatly influence the drug diffusion behavior.
Synthesis and characterisation of magnesium substituted calcium phosphate bioceramic nanoparticles made via continuous hydrothermal flow synthesis
Aqif Anwar Chaudhry, Josie Goodall, Martin Vickers, Jeremy Karl Cockcroft, Ihtesham Rehman, Jonathan Campbell Knowles and Jawwad Arshad Darr,
J. Mater. Chem., 2008, 18, 5900
DOI: 10.1039/b807920j
Continuous hydrothermal flow synthesis (CHFS) technology has been used as an efficient and direct route to produce a range of largely crystalline magnesium substituted calcium phosphate and biphasic bioceramic nanoparticles.
Flexible organic photovoltaics from zinc oxide nanowires grown on transparent and conducting single walled carbon nanotube thin films
Husnu Emrah Unalan, Pritesh Hiralal, Daniel Kuo, Bhavin Parekh, Gehan Amaratunga and Manish Chhowalla,
J. Mater. Chem., 2008, 18, 5909
DOI: 10.1039/b810748c
We describe the fabrication of flexible organic photovoltaics utilizing single walled carbon nanotube thin films as current collecting electrodes on plastic substrates in zinc oxide nanowire/P3HT bulk heterojunction devices.
Covalent grafting onto self-adhesive surfaces based on aryldiazonium salt seed layers
Pascal Viel, Xuan Tuan Le, Vincent Huc, Jennifer Bar, Alessandro Benedetto, Alan Le Goff, Arianna Filoramo, David Alamarguy, Sophie Noël, Laurent Baraton and Serge Palacin,
J. Mater. Chem., 2008, 18, 5913
DOI: 10.1039/b811299a
A simple aqueous two-step protocol from phenylenediamine diazotisation produces active poly-aryldiazonium polymer films grafted on surfaces. Molecules, polymers, nanoparticles, carbon nanotubes or graphenes can be grafted on to these surfaces.
Gas flow dependence on hollow carbon nano-cages as catalyst support in fuel cells
Jun Jie Niu and Jian Nong Wang,
J. Mater. Chem., 2008, 18, 5921
DOI: 10.1039/b814648a
Gas flow dependence on hollow carbon nano-cages was investigated. The Pt-loaded sample displayed improving electrochemical activity in both hydrogen adsorption/desorption and methanol oxidation with increasing flow.
High-performance poly(3-hexylthiophene) transistors with thermally cured and photo-cured PVP gate dielectrics
Feng-Yu Yang, Kuo-Jui Chang, Meei-Yu Hsu and Cheng-Chin Liu,
J. Mater. Chem., 2008, 18, 5927
DOI: 10.1039/b809608b
High-performance poly(3-hexylthiophene) transistors (P3HT-OFETs) with either high-temperature (200 °C) thermally cured PVP gate dielectrics or low-temperature (120 °C) photo-cured PVP gate dielectrics were fabricated.
Urea assisted hydroxyapatite mineralization on MWCNT/CHI scaffolds
María J. Hortigüela, María C. Gutiérrez, Inmaculada Aranaz, Matías Jobbágy, Ander Abarrategi, Carolina Moreno-Vicente, Ana Civantos, Viviana Ramos, José L. López-Lacomba, María L. Ferrer and Francisco del Monte,
J. Mater. Chem., 2008, 18, 5933
DOI: 10.1039/b815401e
We describe the mineralization of ca. 1 µm flower like hydroxyapatite crystals on the internal macroporous surface of MWCNT/CHI scaffolds.
Effects of alkali metal ions on the formation of mesoporous alumina
Zhong-Xi Sun, Ting-Ting Zheng, Qi-Bing Bo, David Vaughan and Michele Warren,
J. Mater. Chem., 2008, 18, 5941
DOI: 10.1039/b810202c
XRD results for meso-structured alumina samples prepared using LiOH (A), NaOH (B) or KOH (C) as the catalyst after calcining at 1100 °C for 2h show that the crystal structures of the formed products are different (
-Al2O3
-Al2O3
-Al2O3).
High-conductivity poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) film for use in ITO-free polymer solar cells
Yu-Sheng Hsiao, Wha-Tzong Whang, Chih-Ping Chen and Yi-Chun Chen,
J. Mater. Chem., 2008, 18, 5948
DOI: 10.1039/b813079e
A simple method to enhance the conductivity of PEDOT:PSS films through spin-coating with various systematic surface-modified compounds is devised for use in ITO-free polymer solar cells; the phenomena occurring and schematic 3D morphological models can be concluded by integrating experimental results.
The good reactivity of lithium with nanostructured copper phosphide
Claire Villevieille, Florent Robert, Pierre Louis Taberna, Laurent Bazin, Patrice Simon and Laure Monconduit,
J. Mater. Chem., 2008, 18, 5956
DOI: 10.1039/b810841b
A new self-supported Cu3P nanoarchitectured electrode is prepared by electrochemical templated synthesis of copper nanorods followed by phosphorus vaporization. The as-obtained Cu3P nanorods/Li half-cell shows significant improvement of electrochemical performance.
Selective diameter uptake of single-walled carbon nanotubes in water using phosphonated calixarenes and 
extended arm
sulfonated calixarenes
Lee J. Hubble, Thomas E. Clark, Mohamed Makha and Colin L. Raston,
J. Mater. Chem., 2008, 18, 5961
DOI: 10.1039/b814904f
We report the water-solubilization of selective diameter SWCNTs based on p-phosphonated and p-sulfonated calixarene supramolecular systems. The ability to control the selective enrichment of semiconducting or metallic SWCNTs is important for post-growth purification protocols.
Silica cages with controllable frameworks: synthesis, structure-tailoring, and formation mechanism
Yonggong Zhan, Bingxin Cai, Bin Wang, Xiaoni Huang, Pengqu Zhang, Lili Li, Zhenjun Wu, Zhoulan Yin and Qiyuan Chen,
J. Mater. Chem., 2008, 18, 5967
DOI: 10.1039/b812299g
Novel macroporous silica cages with tailoring pore architecture were fabricated from disorderly twisted silica nanofibers with random branches; the synthetic conditions and the formation mechanism of the cages are discussed in detail.
X-Ray pair distribution function analysis of a metakaolin-based, KAlSi2O6·5.5H2O inorganic polymer (geopolymer)
Jonathan L. Bell, Pankaj Sarin, Patrick E. Driemeyer, Ryan P. Haggerty, Peter J. Chupas and Waltraud M. Kriven,
J. Mater. Chem., 2008, 18, 5974
DOI: 10.1039/b808157c
The X-ray pair distribution function (PDF) method is used to quantitatively compare the short to medium range atomic ordering (
1 nm) present in the K-based geopolymer (KAlSi2O6·5.5H2O) structure with that observed in zeolitic leucite (KAlSi2O6).
Potassium niobate nanoscrolls incorporating rhodium hydroxide nanoparticles for photocatalytic hydrogen evolution
Renzhi Ma, Yoji Kobayashi, W. Justin Youngblood and Thomas E. Mallouk,
J. Mater. Chem., 2008, 18, 5982
DOI: 10.1039/b812003j
Well-dispersed rhodium trihydroxide nanoparticles were deposited into the interlayer galleries of exfoliated–restacked K4Nb6O17 nanoscrolls, which show substantially improved UV photcatalytic activity for hydrogen evolution from aqueous methanol solutions.
Template-induced directional growth of ZnO nanomeshes by colloidal crystals
Ming Fu, Ji Zhou, Bo Li, Xueguang Huang, Yuehui Wang and Longtu Li,
J. Mater. Chem., 2008, 18, 5986
DOI: 10.1039/b810904d
ZnO nanomeshes along {111}, {110} and {100} planes of colloidal crystals, and nanomeshes with curved shape are synthesized by electrodeposition via introducing hard templated restriction and template-induced anisotropic growing environments.
Bacterial magnetic nanoparticles as drug carriers
Lin Guo, Ji Huang, Xin Zhang, Ying Li and Limin Zheng,
J. Mater. Chem., 2008, 18, 5993
DOI: 10.1039/b808556k
Bacterial magnetic nanoparticles (BMP) can be coupled with doxorubicin efficiently. Doxorubicin coupled BMP exhibit a narrow size distribution, high magnetic response, pH sensitivity and strong cytotoxicity to cancer cells.
Back matter
J. Mater. Chem., 2008, 18, 5998
DOI: 10.1039/b819160n
Back cover
J. Mater. Chem., 2008, 18, 6007
DOI: 10.1039/b819933g
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