Focus on: Superhydrophobic surfaces

Soft Matter & Journal of Materials ChemistrySuperhydrophobic surfaces can cause water to roll off leaving little or no liquid behind and even pick-up and remove small dirt particles resting on the surface; however, despite the  progress made, there is still an opportunity fabricate these surfaces using simpler and cheaper methods, to maximise roll-off, or to introduction additional functional properties. Here we’ve brought together a selection of articles covering the preparation of superhydrophobic surfaces and coatings, their chemical and physical properties, and the origin of the superhydrophobic effect.

Review
Hydrophilic and superhydrophilic surfaces and materials
Jaroslaw Drelich ,  Emil Chibowski ,  Dennis Desheng Meng and Konrad Terpilowski
Soft Matter, 2011,7, 9804-9828

Highlight
Immersed superhydrophobic surfaces: Gas exchange, slip and drag reduction properties
Glen McHale ,  Michael I. Newton and Neil J. Shirtcliffe
Soft Matter, 2010,6, 714-719

Opinion
Characterization of superhydrophobic behavior: effect of vibrational energy
W. Li ,  Y. P. Diao ,  H. L. Zhang ,  G. C. Wang ,  S. Q. Lu ,  X. J. Dong ,  H. B. Dong and Q. L. Sun
Soft Matter, 2009,5, 2833-2835

Click here to see all the articles

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Author Profile: Samuel Thomas

Sam ThomasSamuel Thomas is an Assistant Professor of Chemistry at Tufts University, a position he has held since 2009.  He earned a B.S. in Chemistry in 2000 from the University of Rochester.  After a year-long stint at the Eastman Kodak Company as a research chemist, he entered graduate school at MIT.  He received his Ph.D. in organic chemistry in 2006 under the guidance of Prof. Timothy Swager.  From 2006-2009, he was an American Cancer Society postdoctoral fellow in the laboratory of Prof. George Whitesides at Harvard University.  Since starting his independent career at Tufts, Sam has been the recipient of a 2009 DARPA Young Faculty Award, a 2010 Thieme Publishers Journal Award, and a 2012 NSF CAREER Award.  His research focuses on using physical organic chemistry to design new photoresponsive materials for applications in self-assembly, sensing, and patterning.

1. Which research projects are you working on at the moment?
We work on three main projects in the area of photo-responsive organic materials: 1) Photochemical tuning of properties of conjugated polymers, 2) new applications of singlet oxygen chemistry, and 3) photochemical control of electrostatics.

2. What motivated you to focus on photo-responsive organic materials?
Light is such a versatile reagent.  It gives you real-time control over stoichiometry, energy, and spatial distribution.  It’s thrilling to exert that type of control over organic reactions, and use that control for inventing materials that do new things.

3. What are the hot topics in materials chemistry at the moment?
The rational design of condensed phase behavior from chemical structure

4. What current problem would you like to see science provide a solution to?
Two things: 1) The energy problem; 2) Increasing the possibility of science as a career for more people.

5. What do you find to be the most rewarding aspect of your career?
In terms of experiments, I live vicariously through the students who work in my lab.  Sharing the excitement of discovery with them is a real joy.

6. What’s the secret to being a successful scientist?
Passion and dedication…when an experiment or idea doesn’t work, coming back even more determined to solve the problem!

7. Which scientist past or present do you most admire?
A tie between Pasteur and Faraday.  Pasteur for the meticulousness of separating tartaric acid enantiomers by hand, and Faraday for amazing versatility and experimental genius.

8. If you weren’t a scientist, what would you be?
A musician.  I played the piano constantly as a teenager.

If you’re interested to know more about the Thomas lab’s research you can check out the group website or alternatively you can see a few of their recent papers below:

Structure, photophysics, and photooxidation of crowded diethynyltetracenes
Jingjing Zhang,  Syena Sarrafpour ,  Terry E. Haas,  Peter Müller and Samuel W. Thomas,
J. Mater. Chem., 2012, 22, 6182-6189

UV-induced fluorescence recovery and solubility modulation of photocaged conjugated oligomers
Robert H. Pawle, Victoria Eastman and Samuel W. Thomas,
J. Mater. Chem., 2011, 21, 14041-14047

Acene-linked conjugated polymers with ratiometric fluorescent response to 1O2
Jingjing Zhang,  Syena Sarrafpour,  Robert H. Pawle and Samuel W. Thomas III
Chem. Commun., 2011,47, 3445-3447

To keep up-to-date with all the latest research, sign up for the journal’s e-alerts or RSS feeds or follow Journal of Materials Chemistry on Twitter or Facebook.

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Report & lecture on solar fuels and artificial photosynthesis

This week our Science Team marks the launch of its new report on solar fuels and artificial photosynthesis with a special international event at the Chemistry Centre in London for scientists, policymakers and business-people.  A highlight will be a lecture by Nathan S Lewis, professor of chemistry at Caltech and Editor-in-Chief of our journal Energy and Environmental Science.  He will describe and evaluate the technical, political and economic challenges involved with widespread adoption of renewable energy technologies.  

For more information and to watch this streamed lecture at 1725 BST, 1225 EDT, 0925 PST Thursday 17 May click here: 
http://www.rsc.org/chemistryworld/Webinar/Global_Energy_Perspectives.asp

To read the report or download the infographics click here:
http://www.rsc.org/solar-fuels.

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Recent Appointees in Polymer Science Web-Theme

Recent Appointees in Polymer Science is an organization of, and for, people in the early stages of their independent career. They aim to provide a forum for recent appointees in all sectors of UK polymer science in academia as well as in industry. They are also open to interaction with recent appointees outside of the UK and would be delighted to interact with similar organizations abroad.

This RAPS Web Theme highlights work from members published in RSC journals and new articles will be added as they appear. To see the papers, click here.

Interested in knowing more about RAPS? Check out the website at www.raps.org.uk  for more information

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Zeal for zeolites: an article collection

A collection of high impact articles on the topic of zeolites from the RSC’s Journal of Materials Chemistry (JMC), Catalysis Science & Technology and Physical Chemistry Chemical Physics (PCCP).

ZeoliteZeolites are truly fascinating materials, first noted in the 18th century they were recognized for their interesting ability to release steam when heated. Today around 3 million tons of natural zeolite are mined for commercial use each year. Zeolites have found applications in agriculture, construction, heating, refrigeration, nuclear energy, in the petrochemical industry, as detergents and cat litter!

Unsurprisingly these materials have sparked the interest of scientists around the world since their discovery, resulting in the creation of a vast number of unique zeolitic frameworks and pushing the boundaries of chemical understanding.

The articles below have been made free to access until 8th June to give you a sample of the high impact, cutting edge research being carried out in the exciting world of zeolites!

Click here for the full list of free articles

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Hot Article: Improving the organic-metal interface in polymer solar cells

Effective interfacial layer to enhance efficiency of polymer solar cells via solution-processed fullerene-surfactants

Improving the electronic properties of the organic-metal interface is important for developing high-performance polymer solar cells. In this hot paper two methanol-soluble fullerene surfactants are reported. These form interfacial layers for cathodes in polymer solar cells and significantly enhance open-circuit voltage and photocurrent generation. Bulk heterojunction solar cells developed using these surfactant-modified cathodes offer high power conversion efficiencies of up to 6.63%. Read the article for free until 7th June.

Effective interfacial layer to enhance efficiency of polymer solar cells via solution-processed fullerene-surfactants

Effective interfacial layer to enhance efficiency of polymer solar cells via solution-processed fullerene-surfactants: Chang-Zhi Li, Chu-Chen Chueh, Hin-Lap Yip, Kevin M. O’Malley, Wen-Chang Chen and Alex K.-Y. Jen, J. Mater. Chem., 2012,22, 8574-8578

Don’t forget to keep up-to-date with all the latest research you can sign-up for the Journal of Materials Chemistry RSS feed or Table of contents alert.

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Themed Issue on Metal-Organic Frameworks now published

The 2012 Journal of Materials Chemistry themed issue on ‘Integrating functionality into metal-organic frameworks’ has now been published on-line. View the full issue here.

Guest Editors for the themed issue were Professors Stephen Kaskel and Roland Fischer, and their Editorial can be found here.  A number of reviews were also published:

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Top Ten most-read Journal of Materials Chemistry articles in March

This month sees the following Journal of Materials Chemistry articles that are in the top ten most accessed for March:

Composite microspheres with PAM microgel core and polymerisable surfactant/polyoxometalate complexes shell
Hong Li, Ping Zhang, Long Zhang, Tong Zhou and Daodao Hu
J. Mater. Chem., 2009, 19, 4575-4586
DOI: 10.1039/B823075G

Hierarchical porous TiO2@C hollow microspheres: one-pot synthesis and enhanced visible-light photocatalysis 
Jiandong Zhuang, Qinfen Tian, Hu Zhou, Qian Liu, Ping Liu and Hongmei Zhong
J. Mater. Chem., 2012, 22, 7036-7042
DOI: 10.1039/C2JM16924J 

Recent developments in molecule-based organic materials for dye-sensitized solar cells
Yung-Sheng Yen, Hsien-Hsin Chou, Yung-Chung Chen, Chih-Yu Hsu and Jiann T. Lin
J. Mater. Chem., 2012, 22, 8734-8747
DOI: 10.1039/C2JM30362K 

ZnO nanostructures: growth, properties and applications 
Aleksandra B. Djurišić, Xinyi Chen, Yu Hang Leung and Alan Man Ching Ng
J. Mater. Chem., 2012, 22, 6526-6535 
DOI: 10.1039/C2JM15548F

A 3D porous architecture of Si/graphene nanocomposite as high-performance anode materials for Li-ion batteries
Xing Xin, Xufeng Zhou, Feng Wang, Xiayin Yao, Xiaoxiong Xu, Yimei Zhu and Zhaoping Liu
J. Mater. Chem., 2012, 22, 7724-7730 
DOI: 10.1039/C2JM00120A 

A simple template-free synthesis of ultrathin Cu2ZnSnS4 nanosheets for highly stable photocatalytic H2 evolution 
Lu Wang, Wenzhong Wang and Songmei Sun
J. Mater. Chem., 2012, 22, 6553-6555
DOI: 10.1039/C2JM16515E 

One pot synthesis of tunable Fe3O4–MnO2 core–shell nanoplates and their applications for water purification
Zhiwei Zhao, Jie Liu, Fuyi Cui, Hui Feng and Linlin Zhang
J. Mater. Chem., 2012, 22, 9052-9057
DOI: 10.1039/C2JM00153E 

Self-assembly of ZnO nanocrystals into nanoporous pyramids: high selective adsorption and photocatalytic activity 
Yunxin Liu, Jianxin Shi, Qing Peng and Yadong Li
J. Mater. Chem., 2012, 22, 6539-6541
DOI: 10.1039/C2JM16729H 

Novel preparation and near-infrared photoluminescence of uniform core-shell silver sulfide nanoparticle@mesoporous silica nanospheres
Lu Han, Yingying Lv, Abdullah M. Asiri, Abdulrahman O. Al-Youbi, Bo Tu and Dongyuan Zhao
J. Mater. Chem., 2012, 22, 7274-7279
DOI: 10.1039/C2JM16168K 

The chemistry of graphene
Kian Ping Loh, Qiaoliang Bao, Priscilla Kailian Ang and Jiaxiang Yang
J. Mater. Chem., 2010, 20, 2277-2289
DOI: 10.1039/B920539J

Why not take a look at the articles today and blog your thoughts and comments below.

Fancy submitting an article to Journal of Materials Chemistry? Then why not submit to us today!

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Hot Paper: Enhancing antibacterial cloths

Enzymatic pre-treatment as a means of enhancing the antibacterial activity and stability of ZnO nanoparticles sonochemically coated on cotton fabrics

Graphical abstract: Enzymatic pre-treatment as a means of enhancing the antibacterial activity and stability of ZnO nanoparticles sonochemically coated on cotton fabricsScientists in Israel, Spain and the UK have developed an enzymatic pre-treatment to enhance the antibacterial activity and stability of ZnO nanoparticles coated onto cotton. ZnO nanoparticles are less toxic to human cells than silver– which is one of the materials currently used to make antibacterial fabrics. ZnO nanoparticles can protect the wearer against UV rays.

The pre-treatment means that the by modifying the cotton itself with cellulase, the nanoparticles are embedded for longer. The cotton remained antibacterial up to 10 laundry cycles. Read the article for free until 30th May.

Enzymatic pre-treatment as a means of enhancing the antibacterial activity and stability of ZnO nanoparticles sonochemically coated on cotton fabrics: Ilana Perelshtein, Yelena Ruderman, Nina Perkas, Kamelia Traeger, Tzanko Tzanov, Jamie Beddow, Eadaoin Joyce, Timothy J. Mason, María Blanes, Korina Mollá and Aharon Gedanken, J. Mater. Chem., 2012, DOI: 10.1039/C2JM31054F (Advance Article)

Don’t forget to keep up-to-date with all the latest research you can sign-up for the Journal of Materials Chemistry RSS feed or Table of contents alert.

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Hot Paper: Studying intramolecular excimer emission for SMOLEDs

Intramolecular excimer emission as a blue light source in fluorescent organic light emitting diodes: a promising molecular design

Intermolecular π–π interactions are important in OLEDs and other organic electronic materials and have been extensively studied over the last 20 years; however, intramolecular π–π interactions have not been investigated as deeply. This hot paper reports a structure–property relationship study into intramolecular excimer emission arising from organic molecules used as a blue light source in SMOLEDs. Read for free until 29th May.

Intramolecular excimer emission as a blue light source in fluorescent organic light emitting diodes: a promising molecular design

Intramolecular excimer emission as a blue light source in fluorescent organic light emitting diodes: a promising molecular design: Damien Thirion, Maxime Romain, Joëlle Rault-Berthelot and Cyril Poriel, J. Mater. Chem., 2012, 22, 7149-7157

Don’t forget to keep up-to-date with all the latest research you can sign-up for the Journal of Materials Chemistry RSS feed or Table of contents alert.

To keep up with the journal news you can Like us on Facebook or Follow us on Twitter.

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