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Contents list for Journal of Materials Chemistry, issue 46, 2009

Front cover
J. Mater. Chem., 2009, 19, 8693
DOI: 10.1039/b922975m

Inside front cover
J. Mater. Chem., 2009, 19, 8694
DOI: 10.1039/b922976k

Contents and Highlights in Chemical Technology
J. Mater. Chem., 2009, 19, 8695
DOI: 10.1039/b922977a

Highlight

Hierarchically structured carbon nanocomposites as electrode materials for electrochemical energy storage, conversion and biosensor systems
Zhenhai Wen and Jinghong Li,  J. Mater. Chem., 2009, 19, 8707
DOI: 10.1039/b907509g

Hierarchical carbon-based nanostructures in electrochemical energy storage, conversion and biosensor systems are highlighted in the concepts of design, fabrication, properties, characterization, and applications.

Feature Article

Smart inorganic/organic hybrid microgels: Synthesis and characterisation
Matthias Karg and Thomas Hellweg,  J. Mater. Chem., 2009, 19, 8714
DOI: 10.1039/b820292n

Smart inorganic/organic hybrid microgels combine the responsive character of hydrogels with the interesting properties of nanoparticles, leading to completely new material properties. This Feature article reviews the present state of the art in the field.

Communication

A plasmonic fluid with dynamically tunable optical properties
Rama Ranjan Bhattacharjee, Ruipeng Li, Luis Estevez, Detlef-M. Smilgies, Aram Amassian and Emmanuel P. Giannelis,  J. Mater. Chem., 2009, 19, 8728
DOI: 10.1039/b919006f

A new gold nanorod-based nanocomposite was synthesized, which exhibits solid-like plasmonic properties while being responsive to external stimuli in a liquid-like manner.

Papers

Facile fabrication of polyelectrolyte complex/carbon nanotube nanocomposites with improved mechanical properties and ultra-high separation performance
Qiang Zhao, Jinwen Qian, Meihua Zhu and Quanfu An,  J. Mater. Chem., 2009, 19, 8732
DOI: 10.1039/b912578g

A novel method for in situ fabrication of PEC/MWCNT nanocomposite membranes, with a fine dispersion of MWCNTs, improved mechanical strength and ultra high separation performance is proposed.

Butterfly wings as natural photonic crystal scaffolds for controllable assembly of CdS nanoparticles
Jie Han, Huilan Su, Di Zhang, Jianjun Chen and Zhixin Chen,  J. Mater. Chem., 2009, 19, 8741
DOI: 10.1039/b911101h

A facile solution process is developed, through which butterfly wings are taken as natural photonic crystal (PhC) scaffolds for the synthesis and assembly of luminescent nanoparticles, and thus to achieve novel optical nanocomposites of nano-CdS/wings with unobtainable PhC features.

White light induced photocatalytic activity of sulfur-doped TiO₂ thin films and their potential for antibacterial application
Charles W. Dunnill, Zoie A. Aiken, Andreas Kafizas, Jonathan Pratten, Michael Wilson, David J. Morgan and Ivan P. Parkin,  J. Mater. Chem., 2009, 19, 8747
DOI: 10.1039/b913793a

Sulfur-doped titania thin films prepared by APCVD are compared to two industrial self-cleaning products and shown to be superior in both photocatalysis and photo-induced superhydrophilicity, as well as displaying antimicrobial effects under hospital lighting conditions.

A novel hybrid supercapacitor with a carbon nanotube cathode and an iron oxide/carbon nanotube composite anode
Xin Zhao, Colin Johnston and Patrick S. Grant,  J. Mater. Chem., 2009, 19, 8755
DOI: 10.1039/b909779a

A hybrid supercapacitor combining a flexible carbon nanotube cathode and a flexible hematite nanoparticle/carbon nanotube composite anode showed both high energy and power density when an optimum nanotube:nanoparticle ratio was used.

Probing local structure in the yellow phosphor LaSr₂AlO₅:Ce³⁺, by the maximum entropy method and pair distribution function analysis
Won Bin Im, Katharine Page, Steven P. DenBaars and Ram Seshadri,  J. Mater. Chem., 2009, 19, 8761
DOI: 10.1039/b912793c

The combined use of MEM and PDF techniques for unraveling subtle details in the crystal structure of LaSr₂AlO₅:Ce³⁺ provide valuable insight for further development of new phosphor materials.

Atomic layer deposition of lithium containing thin films
Matti Putkonen, Titta Aaltonen, Mari Alnes, Timo Sajavaara, Ola Nilsen and Helmer Fjellvåg,  J. Mater. Chem., 2009, 19, 8767
DOI: 10.1039/b913466b

Lithium carbonate films were grown by atomic layer deposition from Li(thd) (thd = 2,2,6,6-tetramethyl-3,5-heptanedionate) and ozone. When the Li(thd) process was combined with a La₂O₃ ALD process films with composition varying from Li_0.15C_0.69La_0.98O₃ to Li_1.80C_1.05La_0.12O₃ were obtained.

A new class of non-conjugated bipolar hybrid hosts for phosphorescent organic light-emitting diodes
Lichang Zeng, Thomas Y.-H. Lee, Paul B. Merkel and Shaw H. Chen,  J. Mater. Chem., 2009, 19, 8772
DOI: 10.1039/b909787b

Bipolar hybrids comprising hole- and electron-transport moieties with aliphatic linkages are readily processed into morphologically stable amorphous films with elevated glass transition temperatures in addition to energy levels and triplet energies inherent to the two moieties, well suited as hosts for triplet emitters.

Tunable synthesis of carboxyl-functionalized magnetite nanocrystal clusters with uniform size
Changming Cheng, Yinghui Wen, Xuefei Xu and Hongchen Gu,  J. Mater. Chem., 2009, 19, 8782
DOI: 10.1039/b910832g

The physicochemical properties of carboxyl-functionalized magnetite nanocrystal clusters could be tuned by simply varying the concentration of citrate in the process, especially the size of clusters.

V₂O₅ xerogel electrodes with much enhanced lithium-ion intercalation properties with N₂ annealing
Dawei Liu, Yanyi Liu, Betzaida Batalla Garcia, Qifeng Zhang, Anqiang Pan, Yoon-Ha Jeong and Guozhong Cao,  J. Mater. Chem., 2009, 19, 8789
DOI: 10.1039/b914436f

V₂O₅ films annealed in N₂ exhibited a much improved lithium ion intercalation capability as compared to counterparts annealed in air, highly favoring potential application as lithium ion battery electrodes.

Poly(pyridinium) salts containing calix[4]arene segments in the main chain as potential biosensors
Yan Lu, Changchun Xiao, Zhufang Yu, Xianshun Zeng, Yi Ren and Chenxi Li,  J. Mater. Chem., 2009, 19, 8796
DOI: 10.1039/b913874a

Novel poly(pyridinium) salts were synthesized by polycondensation of calix[4]arene diamines with 4,4-(1,4-phenylene)bis(2,6-diphenylpyrylium tetrafluoroborate). Interactions between the poly(pyridinium) salts and Pseudomonas fluorescens DNA were investigated by fluorescent titration method and transmission electron microscopy.

Chiral layered molecular spaces with amino acids
Wanjun Liu, Ken Yao, Wenfeng Shangguan and Jian Yuan,  J. Mater. Chem., 2009, 19, 8803
DOI: 10.1039/b913190f

Novel chiral layered molecular spaces L-(+)-Leu-APAPhS and D-(-)-Ala-APAPhS were synthesized through grafting L-leucine and D-alanine in layered CPAPhS with regular carboxyl groups, and exhibited potential for chiral molecular recognition and selection processes.

The first solid-phase route to fabricate and size-tune gold nanoparticles at room temperature
Dipen Debnath, Sung H. Kim and Kurt E. Geckeler,  J. Mater. Chem., 2009, 19, 8810
DOI: 10.1039/b905260g

The synthesis of polymer-protected gold nanoparticles at ambient temperature using a solid-state reaction is demonstrated, where the size of the nanoparticles can be tuned by varying the reaction parameters.

A cryogenic direct-plotting system for fabrication of 3D collagen scaffolds for tissue engineering
GeunHyung Kim, SeungHyun Ahn, Hyeon Yoon, YunYoung Kim and Wook Chun,  J. Mater. Chem., 2009, 19, 8817
DOI: 10.1039/b914187a

To generate a highly porous 3D collagen scaffold, a 3D plotting method coupled with a cryogenic system was used. The pore structure of the 3D collagen scaffold was easily controlled by processing parameters of the plotting system.

Highly efficient orange organic light-emitting diodes using a novel iridium complex with imide group-containing ligands
Dong-Seok Leem, Sung Ouk Jung, Seul-Ong Kim, Jong-Won Park, Ji Whan Kim, Young-Seo Park, Yun-Hi Kim, Soon-Ki Kwon and Jang-Joo Kim,  J. Mater. Chem., 2009, 19, 8824
DOI: 10.1039/b915384e

High efficiency phosphorescent orange OLEDs have been demonstrated using a newly synthesized iridium complex with imide group-containing phenylpyridine derivatives as bis-cyclometallized ligands.

A simple aminoalkyl siloxane-mediated route to functional magnetic metal nanoparticles and magnetic nanocomposites
Angelika Gorschinski, Guram Khelashvili, Dieter Schild, Wilhelm Habicht, Richard Brand, Mohammad Ghafari, Helmut Bönnemann, Eckhard Dinjus and Silke Behrens,  J. Mater. Chem., 2009, 19, 8829
DOI: 10.1039/b911738e

A simple synthetic route for functional Co nanoparticles is reported which further allows their integration into Co@SiO₂ microspheres, a synthesis that could be also applied to Fe nanoparticles.

Isomeric periodic mesoporous organosilicas with controllable properties
Carl Vercaemst, Matthias Ide, Heiner Friedrich, Krijn P. de Jong, Francis Verpoort and Pascal Van Der Voort,  J. Mater. Chem., 2009, 19, 8839
DOI: 10.1039/b913961c

A facile synthesis route for preparing diastereoisomeric ethenylene-bridged PMOs with controllable properties has been developed.

Stabilizing cyanosols: amorphous cyanide bridged transition metal polymer nanoparticles
Christine M. Burgess, Nan Yao and Andrew B. Bocarsly,  J. Mater. Chem., 2009, 19, 8846
DOI: 10.1039/b911682f

Soluble and stable nanoparticles of amorphous cyanide bridged transition metal polymers are isolated by counter-ion metathesis and utilized as a reagent in the synthesis of new nanoparticulate polymers and nanoalloys.

Convenient preparation of tunably loaded chemically converted graphene oxide/epoxy resin nanocomposites from graphene oxide sheets through two-phase extraction
Huafeng Yang, Changsheng Shan, Fenghua Li, Qixian Zhang, Dongxue Han and Li Niu,  J. Mater. Chem., 2009, 19, 8856
DOI: 10.1039/b915228h

A facile method to create chemically converted graphene oxide/epoxy resin nanocomposites through two-phase extraction is reported. Moreover, great improvements in mechanical properties have been achieved for the resulting nanocomposite.

Very fast CO₂ response and hydrophobic properties of novel poly(ionic liquid)s
Placido G. Mineo, Letizia Livoti, Marco Giannetto, Antonino Gulino, Sandra Lo Schiavo and Paola Cardiano,  J. Mater. Chem., 2009, 19, 8861
DOI: 10.1039/b912379b

New poly(ionic liquid)s based on the cationic fragment [2-(methacryloyloxy)ethyl]dimethylheptylammonium have been synthesized and characterized. The potential applications of such homo- and copolymers as hydrophobic and CO₂ sensing materials have been explored. QCM measurements showed that poly(IL)s have a very fast and completely reversible response towards CO₂ making them suitable for sensoristic applications.

Tunable surface plasmon resonance of Au@Ag₂S core–shell nanostructures containing voids
Jinmiao Zhu, Yuhua Shen, Anjian Xie and Lin Zhu,  J. Mater. Chem., 2009, 19, 8871
DOI: 10.1039/b914550h

A novel Au@Ag₂S core–shell nanostructure containing voids between shell and core can be synthesized based on the Kirkendall effect, and thus tune the SPR absorption of Au nanorods.

Room temperature ferrimagnetic thin films of the magnetoelectric Ga_2-xFe_xO₃
Morgan Trassin, Nathalie Viart, Gilles Versini, Sophie Barre, Geneviève Pourroy, Jihye Lee, William Jo, Karine Dumesnil, Catherine Dufour and Sylvie Robert,  J. Mater. Chem., 2009, 19, 8876
DOI: 10.1039/b913359c

(0k0) oriented films of the magnetoelectric material Ga_2-xFe_xO₃ (0.8 x 1.4) have been grown by pulsed laser deposition on various substrates, including the conducting indium tin oxide buffered YSZ(001) and single crystalline Pt(111) buffered YSZ(111).

Solution processed invisible all-oxide thin film transistors
Keunkyu Song, Dongjo Kim, Xiang-Shu Li, Taewhan Jun, Youngmin Jeong and Jooho Moon,  J. Mater. Chem., 2009, 19, 8881
DOI: 10.1039/b912554j

A solution processed all-oxide transparent transistor has been demonstrated. Integration of a spin-coated zinc tin oxide semiconductor with an ink-jet-printed zinc indium oxide electrode creates a transparent TFT with high performance and good transparency (90%).

Back cover
J. Mater. Chem., 2009, 19, 8887
DOI: 10.1039/b922979p

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