Hot Paper: Graphene supported Au-Pd bimetallic nanoparticles with core-shell structures and superior peroxidase-like activities

Graphical abstract: Graphene supported Au-Pd bimetallic nanoparticles with core-shell structures and superior peroxidase-like activitiesAu@Pd bimetallic nanoparticles were successfully dispersed on graphene by a simple one step reducing method.

The bimetallic nanoparticles show superior catalytic activity over the monometallic counterparts. Including the Au core minimizes the use of more expensive Pd precursors and plays an important role in enhancing the catalytic activity arising from the strong catalytic bimetallic electronic ligand interactions. The composition and shell thickness of the nanoparticles is controlled by loading different amounts of the metallic precursors. Interested to know more? Read the article for free until 16th December…

Graphene supported Au-Pd bimetallic nanoparticles with core-shell structures and superior peroxidase-like activities: Hongyu Chen, Yang Li, Fengbao Zhang, Guoliang Zhang and Xiaobin Fan, J. Mater. Chem., 2011, 21, 17658-17661

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Journal of Materials Chemistry issue 46 out now!

The latest issue of Journal of Materials Chemistry is now online. You can read the full issue here:

Graphical abstract: Front cover

 

The outside front cover features an article on Ultrasensitive and selective C2H5OH sensors using Rh-loaded In2O3 hollow spheres by Sun-Jung Kim, In-Sung Hwang, Chan Woong Na, Il-Doo Kim, Yun Chan Kang and Jong-Heun Lee .






Issue 46 contains the following Highlight and Feature articles:

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Announcing the Materials for Biosurfaces Themed Issue

Journal of Materials Chemistry will publish a themed issue on Materials for Biosurfaces in 2012. Please contact the editorial office if you would like to contribute an article.

The Guest Editors of the issue will be Professor Christopher K. Ober (Cornell University, USA), Dr. Christian Ohm (Cornell University, USA), Ms. Mary E. Welch (Cornell University, USA).

The issue will focus on the synthetic and physical chemistry of biosurfaces with a primary attention to polymer based surfaces and the role of surfaces in biomedical related applications such as biosensors. Materials of interest include polymer brushes, hydrogels, membranes and self-assembled monolayers. The role of surfaces in cell adhesion and cell-surface interactions is also a topic of this special issue.  

Journal of Materials Chemistry publishes original research that demonstrates novelty and advance, either in the chemistry used to produce materials or in the properties/applications of the materials produced. All manuscripts will be handled by the Journal of Materials Chemistry Editorial office and refereed in accordance to the standard procedures of the journal.

The deadline for the receipt of manuscripts for this themed issue is Monday 20th February 2012

Manuscripts can be submitted using the RSC’s on-line submissions service. Please clearly state in the comment to editors section during submission that the manuscript is “submitted by invitation for the themed issue on Materials for Biosurfaces”.

We hope that you will be able to contribute to this themed issue and we look forward to hearing from you.

Professor Christopher K. Ober, Cornell University, Guest Editor
Dr. Christian Ohm, Cornell University, Guest Editor
Ms. Mary E. Welch, Cornell University
Dr Liz Davies, Editor, Journal of Materials Chemistry

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Journal of Materials Chemistry article featured in Chemistry World: Invisible ink for the 21st century

Scientists from China have developed a new lithographic printing technique to layer a pattern onto photonic paper. The development could be significant for anti-counterfeit applications, such as hidden writing for anti-theft labels, because the pattern created is effectively invisible until the material is immersed in water.

The standard approach to photonic printing is to print a responsive material onto photonic paper, which will then react to an external stimulus and reveal the pattern. To see the pattern clearly, a high loading of the responsive material is needed, which often renders it visible before it has reacted. Creating the pattern is not a challenge, but keeping it hidden until it reacts to the stimulus is. Interested to know more? Read the full article in Chemistry World here…

Patterns in photonic ink revealed by water

The ‘invisible’ patterns on photonic prints are revealed in water and go back to their original state when dry

Read the paper from Journal of Materials Chemistry:

Invisible photonic prints shown by water
R Xuan and J Ge
J. Mater. Chem., 2011
DOI: 10.1039/c1jm14082e

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Journal of Materials Chemistry article featured in Chemistry World: Polymer based sensors feeling the strain

Researchers in China have made a new strain sensor to monitor the safety of buildings and other structures. Strain sensors are used to monitor structural damage, so can detect problems in the integrity of buildings during earthquakes, or in the structure of vehicles and aircraft.

Guojia Fang and co-workers from Wuhan University made a sensor out of polymer nanofibres – poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) and polyvinyl alcohol (PVA). They used electrospinning to draw out fibres from a mixture of the polymers, then formed a structure of interconnecting strands. Interested to know more? Read the full article in Chemistry World here…

Polymer based sensor

The researchers tested the sensor by attaching it to a finger and observing the changes in current with bending and unbending

Electrospun PEDOT:PSS–PVA nanofiber based ultrahigh-strain sensors with controllable electrical conductivity
N Liu, G Fang, J Wan, H Zhou, H Long and X Zhao,
J. Mater. Chem., 2011
DOI: 10.1039/c1jm14491j
 
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Journal of Materials Chemistry issue 45 out now!

The latest issue of Journal of Materials Chemistry is now online. You can read the full issue here:




The outside front cover features a Feature Article on Electrical transport characteristics through molecular layers by Gunuk Wang, Tae-Wook Kim and Takhee Lee






Issue 45 contains the following Feature articles:

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Hot Communication: Chameleon clothes for quantitative oxygen imaging

A chameleon cloth that changes colour in response a drop in oxygen concentration could be used to warn of oxygen deficient areas say Chinese scientists.

The colour of the cloth gradually changes from red to purple to blue as the oxygen concentration increases. The light, soft and flexible cotton cloth could be easily included in clothes to make wearable sensors the team say.

Graphical abstract: Chameleon clothes for quantitative oxygen imaging

Read the full paper for free until 8th December:

Xu-dong Wang, Ting-yao Zhou, Xin-hong Song, Yaqi Jiang, Chaoyong James Yang and Xi Chen, J. Mater. Chem., 2011, 21, 17651-17653

This paper was also featured in Chemistry World.

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Focus on: Metamaterials

Journal of Materials Chemistry cover imageFeature Article
Metamaterials: constitutive parameters, performance, and chemical methods for realization
Hongsheng Chen
J. Mater. Chem., 2011, 21, 6452-6463
 
Critical Review
Metamaterials: a new frontier of science and technology
Yongmin Liu and Xiang Zhang
Chem. Soc. Rev., 2011, 40, 2494-2507

Communication
Photocatalytic metamaterials: TiO2 inverse opals
Fabrizio Sordello, Clara Duca, Valter Maurino and Claudio Minero
Chem. Commun., 2011, 47, 6147-6149

Papers
Low loss photopatternable matrix materials for LWIR-metamaterial applications
Roger D. Rasberry, Yun-Ju Lee, James C. Ginn, Paul F. Hines, Christian L. Arrington, Andrea E. Sanchez, Michael T. Brumbach, Paul G. Clem, David W. Peters, Michael B. Sinclair and Shawn M. Dirk
J. Mater. Chem., 2011, 21, 13902-13908

Dielectric metamaterial particles with enhanced efficiency of mechanical/electrical energy transformation
Yinpo Qiao, Xiaopeng Zhao and Yanyan Su
J. Mater. Chem., 2011, 21, 394-399

Chiral assembly of gold nanorods with collective plasmonic circular dichroism response
Rong-Yao Wang, Honglei Wang, XiaoChun Wu, Yinglu Ji, Peng Wang, Yuan Qu and Tai-Shung Chung
Soft Matter, 2011, 7, 8370-8375

Self-organization of mono- and bi-modal PbS nanocrystal populations in superlattices
Michela Corricelli, Davide Altamura, Liberato De Caro, Antonella Guagliardi, Andrea Falqui, Alessandro Genovese, Angela Agostiano, Cinzia Giannini, Marinella Striccoli and M. Lucia Curri
CrystEngComm, 2011, 13, 3988-3997

Are you working on the synthesis, properties or applications of metamaterials? Then why not submit your next article to Journal of Materials Chemistry?

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Hot Article: Nanoparticles that capture, kill, & remove pathogens

Researchers combined silver nanoparticles and iron oxide to make nanoparticles with Ag@Fe2O3 yolk–shell structure. After functionalization of the surface with glucose, these magnetic nanoparticles show high capture efficiency of bacteria and potent antibacterial activity because of Ag cores. Interested to know more? Read the article for free until 7th December (free registration required)

Multifunctional Ag@Fe2O3 yolk–shell nanoparticles for simultaneous capture, kill, and removal of pathogen: Zhanhua Wei, Zijian Zhou, Meng Yang, Chenghong Lin, Zhenghuan Zhao, Dengtong Huang, Zhong Chen and Jinhao Gao, J. Mater. Chem., 2011, 21, 16344-16348

 Graphical abstract: Multifunctional Ag@Fe2O3 yolk–shell nanoparticles for simultaneous capture, kill, and removal of pathogen

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Hot Paper: Yellow to Red: A soft porous crystal with mechanofluorochromism

Graphical abstract: Construction of soft porous crystal with silole derivative: strategy of framework design, multiple=A soft porous crystal which changes its fluorescence in response to mechanical grinding and heat has been developed by scientists in China. 

Applying mechanical force changes the organic crystal’s fluorescence from yellow through to cherry red. Heating the crystal reverses this. The team say this mechanofluorochromism is caused by the crystal going through multiple structural transformations.

Read the full paper for free until 5th December:

Construction of soft porous crystal with silole derivative: strategy of framework design, multiple structural transformability and mechanofluorochromism: J. Mei, J. Wang, A. Qin, H. Zhao, W. Yuan, Z. Zhao, H. H. Y. Sung, C. Deng, S. Zhang, I. D. Williams, J. Z. Sun and B. Z. Tang, J. Mater. Chem., 2011, Advance Article, DOI: 10.1039/C1JM12673C

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