Crystal Engineering GRC 2012

No lions and tigers, but certainly bears!

Last week I attended the Gordon Research Conference in Crystal Engineering. This was my first GRC and I loved it! The meeting was held at Waterville Valley Resort in New Hampshire, USA which can be best described as something the Disney resorts would use to model their wildnerness lodge areas. The looming hills, rivers, New England-style cabins and prowling bears (unfortunately I didn’t spot any!) were the perfect backdrop to a meeting filled with excellent science and a great chance for colleagues from across the globe to catch up.

This year the conference was chaired by Robin Rogers (University of Alabama and Crystal Growth & Design Editor in Chief), with Vice Chairs Christer Aakeröy (Kansas State University and CrystEngComm Associate Editor) and Mike Zawarotko (University of South Florida and Crystal Growth & Design Associate Editor).

Following the two and a half hour coach journey from Boston, we were rushed into dinner which was quickly followed by the first of the evening lectures, marking the beginning of the meeting. The first session was nanocrystal-based with talks given by Helmut Coelfen and Christoph Janiak on using ultracentrifugation to analyse nanoparticles and ionic liquids to stabilise nanoparticles, respectively.

After kick-starting Day 2 with the obigliatory American waffles and maple syrup, I joined the morning session to hear Jennifer Swift deliver her presentation, providing insight into in vivo uric acid precipitation. Next up was Kraig Wheeler who described his recent work investigating quasiracemates, followed by Miguel Garcia-Garibay’s talk on performing photochemical reactions with nanocrystals. The evening session was of much more relective nature with Joel Bernstein looking back over the seminal work from the past decades. Gautam Desiraju talked on polymorphism, highlighting some of his recent nanoidentation work published in Chemical Science (see here for more).

Tuesday morning was dedicated to porous materials – Lee Cronin and Arunachalamr Ramanan delivered presentations on polyoxometallates and Shengqian Ma gave an overview on his latest work on metalloporphyrin frameworks – whilst the evening session was focused on conducting materials with talks by Marc Fourmigué and Hiroshi Yamamoto.

Poster sessions were held throughout the week and were a true reflection of the quality and the diversity of the talks. The CrystEngComm poster prize was awarded to Sajesh Thomas from Professor Guru Row’s research group at the Indian Institute of Science, Bangalore. His poster was entitled “Chalcogen Bonding in Crystal Engineering: Its Directing role in Isostructurality and Polymorphism.” Well done Sajesh!

I reluctantly left the conference on the Wednesday morning after excellent talks from Nair Rodriguez-Hornedo and Susan Bourne (who began her talk using penguins to describe different crystal symmetries!), but I have been assured that the science continued to “sparkle”…

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There’s still just time to register for Crystallisation – A Biological Perspective: Faraday Discussion 159

There’s still just time to register for Crystallisation – A  Biological Perspective: Faraday Discussion 159  – by the deadline date of 22 June.

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If you are working in the areas of biomineralisation, biomimetic crystallisation, nucleation or crystal growth, then you will benefit from joining this discussion with top experts in the field.

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Taking part in a Faraday Discussion means that your own work will get better known, as all research papers and comments are recorded for publication after the event.

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Registration is quick and simple via our online booking system, so act today.

Come and explore the controversial new evidence of pre-nucleation clusters and discuss this apparent divergence from classical nucleation theory.

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June Crystal Clear: Euro 2012 Crystal

A titanium microsphere, used as the starting material to make hollow whisker balls

With Euro 2012 now well under away this month’s crystal clear couldn’t be more apt – a crystal soccer ball. The paper, from Issue 12 of CrystEngComm, reports the generation of highly crystalline hollow whisker balls.

Using the KCl flux cooling method, the team were able to grow highly crystalline K2Ti6O13 whiskers from the centres of titanium microspheres. The ultra-long whiskers grew on a TiO2 layer, leaving the centre of the sphere hollow and creating a bi-layer hollow whisker ball structure.

The team also used Ti powders as a starting material for the flux process and found this produced significantly different structures, for more details of the teams procedure and some remarkable images of their unique balls, download their article below for free.

Growth of ultralong potassium titanate whiskers by the KCl flux method with metallic titanium materials
Sayaka Suzuki, Katsuya Teshima, Mizuho Kiyohara, Hideya Kamikawa, Kunio Yubuta, Toetsu Shishido and Shuji Oishi
CrystEngComm, 2012,14, 4176-4180
DOI: 10.1039/C2CE00010E

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Call for Papers: Covalent organic frameworks and related porous molecular materials

Submit before 22nd August and your work could be included in this upcoming themed issue!

COFsSubmissions are now open for our themed issue focusing on covalent organic frameworks (COFs) and closely-related materials such as porous molecular crystals, with Guest Editor Andy Cooper. Manuscripts concerning all aspects of these materials including synthesis, structure determination, theory, properties and applications are welcome.

To fit with the scope of the journal, the emphasis is on crystalline materials, although studies concerning the synthetic engineering of 3-D structure in amorphous networks, such as covalent organic polymers, might be appropriate for consideration providing that a clear link between molecular structure and extended structure is established.

The deadline for submissions is 22nd August 2012. Communications, full papers and Highlight are welcome and can be submitted online with a note specifying the manuscript it is intended for the themed issue.

Please note that all submissions are subject to the usual peer-review process and inclusion within the themed issue is subject to the manuscript fitting both the scope of the journal and the themed issue, if you have any questions about the issue or the journal please don’t hesitate contact the Editorial Office.

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Glass ceramics and controlled crystallisation

This article is HOT as recommended by the referees. And we’ve made it free to access for 4 weeks.

Glass ceramics are remarkable materials and as their name suggests, they exhibit properties of both glasses and ceramics. An interesting and well known example of a glass ceramic is the lithium, silicon and aluminium-oxide material which provides the almost unbreakable tops to our electric hobs as well as protection for deep space mirrors.

An SEM micrograph of the polished cross-section of a sample annealed for 20h

This isn’t the only glass ceramic system nor is the low (or even zero) coefficient of thermal expansion the only interesting property these materials have. Glass ceramics containing crystals of the fresnoite type possess interesting piezoelectric, pyroelectric and surface acoustic properties. This Hot Article from Wolfgang Wisniewski, Marek Patschger and Christian Russel reports the Sr-fresnoite surface crystallisation in a 2SrO·TiO2·2.75 SiO2 glass and is a great example of modern functionality driven research.

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Sr-fresnoite surface crystallisation in a 2SrO•TiO2•2.75 SiO2 glass studied by EBSD
Wolfgang Wisniewski, Marek Patschger and Christian Rüssel
CrystEngComm, 2012, Advance Article

Other articles which may also be of interest include:

Composition and texture of barium silicate crystals in fresnoite glass-ceramics by various scanning electron microscopic techniques
Marcus Nagel, Wolfgang Wisniewski, Günter Völksch, Christian Borschel, Carsten Ronning and Christian Rüssel
CrystEngComm, 2011, 13, 3383-3389

Crystallisation of iron containing glass–ceramics and the transformation of hematite to magnetite
Wolfgang Wisniewski, Ruzha Harizanova, Günter Völksch and Christian Rüssel
CrystEngComm, 2011, 13, 4025-4031

Keep up to date with all the latest news in crystal engineering by liking us on facebook, following us on twitter or signing up to our e-alert service.

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Yellow light for nanowires

This article is HOT as recommended by the referees. And we’ve made it free to access for 4 weeks.

SEM images of the as-synthesized ZnS nanowire bundles:

SEM images of the as-synthesized ZnS nanowire bundles

Researchers from China have recently described the controlled synthesis of ZnS nanowire bundles and nanorod arrays though directly etching zinc wafer at mild temperature. Unique yellow photoluminescence emissions of the as-obtained ZnS nanostructures were observed. The as-synthesized ZnS nanorod arrays possess good superhydrophobicity making the nanostructures  excellent candidates for optics and biomimetics.

Read more about these interesting nanostructures at:

Self assembly of shape-controlled ZnS nanostructures with novel yellow light photoluminescence and excellent hydrophobic properties
Weina Jia, Boxiang Jia, Xiang Wu and Fengyu Qu
CrystEngComm, 2012, Advance Article
DOI: 10.1039/C2CE25144B

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Top ten most accessed articles in April

This month sees the following articles in CrystEngComm that are in the top ten most accessed:-

Coordination polymers, metal–organic frameworks and the need for terminology guidelines 
Stuart R. Batten ,  Neil R. Champness ,  Xiao-Ming Chen ,  Javier Garcia-Martinez ,  Susumu Kitagawa ,  Lars Öhrström ,  Michael O’Keeffe ,  Myunghyun Paik Suh and Jan Reedijk  
CrystEngComm, 2012,14, 3001-3004 DOI: 10.1039/C2CE06488J  

SnO2 hollow nanospheres enclosed by single crystalline nanoparticles for highly efficient dye-sensitized solar cells 
Hua Wang ,  Bo Li ,  Jian Gao ,  Ming Tang ,  Hongbin Feng ,  Jinghong Li and Lin Guo  
CrystEngComm, 2012, Advance Article DOI: 10.1039/C2CE06531B  

Supramolecular architecture of silver(I) coordination polymers containing polydentate N-donor ligands 
Kittipong Chainok ,  Suzanne M. Neville ,  Craig M. Forsyth ,  William J. Gee ,  Keith S. Murray and Stuart R. Batten  
CrystEngComm, 2012,14, 3717-3726 DOI: 10.1039/C2CE25225B  

Structural diversity in imidazole and carboxylate-containing metal complexes dependent on the alkaline reagents 
Hai-Wei Kuai ,  Jian Fan ,  Qing Liu and Wei-Yin Sun  
CrystEngComm, 2012,14, 3708-3716 DOI: 10.1039/C2CE25062D  

Modification of luminescent properties of a coumarin derivative by formation of multi-component crystals 
Dongpeng Yan ,  Amit Delori ,  Gareth O. Lloyd ,  Bhavnita Patel ,  Tomislav Friščić ,  Graeme M. Day ,  Dejan-Krešimir Bučar ,  William Jones ,  Jun Lu ,  Min Wei ,  David G. Evans and Xue Duan  
CrystEngComm, 2012, Advance Article DOI: 10.1039/C2CE25217A  

Template-free hydrothermal synthesis of VO2 hollow microspheres 
F. Y. Kong ,  M. Li ,  X. Y. Yao ,  J. M. Xu ,  A. D. Wang ,  Z. P. Liu and G. H. Li  
CrystEngComm, 2012,14, 3858-3861 DOI: 10.1039/C2CE25199J  

Fabrication of Cu2ZnSnS4 nanowires and nanotubes based on AAO templates 
Zhenghua Su ,  Chang Yan ,  Ding Tang ,  Kaiwen Sun ,  Zili Han ,  Fangyang Liu ,  Yanqing Lai ,  Jie Li and Yexiang Liu  
CrystEngComm, 2012,14, 782-785 DOI: 10.1039/C2CE06236D  

Shape-controlled synthesis of ZnSn(OH)6 crystallites and their HCHO-sensing properties 
Lixian Han ,  Jie Liu ,  Zhengjun Wang ,  Kun Zhang ,  Hui Luo ,  Bo Xu ,  Xing Zou ,  Xiao Zheng ,  Bin Ye and Xibin Yu  
CrystEngComm, 2012,14, 3380-3386 DOI: 10.1039/C2CE06583E  

Bottom-up assembly of hierarchical Cu2O nanospheres: controllable synthesis, formation mechanism and enhanced photochemical activities 
Shaodong Sun ,  Xiaozhe Zhang ,  Xiaoping Song ,  Shuhua Liang ,  Liqun Wang and Zhimao Yang  
CrystEngComm, 2012,14, 3545-3553 DOI: 10.1039/C2CE25071C  

Highly rigid and stable porous Cu(i) metal–organic framework with reversible single-crystal-to-single-crystal structural transformation 
Sudip Mohapatra ,  Hiroshi Sato ,  Ryotaro Matsuda ,  Susumu Kitagawa and Tapas Kumar Maji  
CrystEngComm, 2012, Advance Article DOI: 10.1039/C2CE06701C  

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

Fancy submitting an article to CrystEngComm? Then why not submit to us today or alternatively email us your suggestions.

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This months CrystEngSelects

Here is this month’s selection of advanced articles and accepted manuscripts of interest to crystal engineers from across the RSC journals

CrystEngSelectsArticles are chosen from:
ChemComm,
Chemical Science,
CrystEngComm,
Dalton Transactions,
Journal of Materials Chemistry,
Nanoscale,
New Journal of Chemistry,
RSC Advances.

Click here to expand the article list

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May Crystal Clear: Micro-Flowers

Crystal engineering crystengcomm clear nano flower morphology superstructure

High-magnification FESEM image of 3D flower-like ZnO superstructure

This month’s crystal clear features some truly stunning hierarchical structures. 

These flower-like 3D formations have been made by Kezheng Chen et al. at the Lab of Functional and Biomedical Nanomaterials. The generation of these impressive superstructures is intriguing; the team were able to alter the reaction time to change the morphology of the produced crystals. 

The team propose that the crystalline ZnO aggregates, there is then orientated attachment of nanoclusters followed by heterogeneous nucleation and growth of secondary nanosheets. The result is striking. 

The average diameter of the superstructures is around 3µm, comprised of an intersecting network of nanosheets of the order of 15nm. The large porous surface of these zinc oxide flowers lend themselves to applications in catalysis, solar cells and sensors. 

This article was published in Issue 9 of CrystEngComm and can be downloaded for free. If you’re interested in crystal engineering you can also take a look at the previous winners of Crystal Clear

Facile synthesis of flower-like 3D ZnO superstructures via solution route
Yongjiang Sun, Li Wang, Xuegang Yu and Kezheng Chen 

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Mechanical behaviour, crystal structure and tabletability

This article is HOT as recommended by the referees. And we’ve made it free to access for 4 weeks.

Shearing, bending or brittle?

Shearing, bending or brittle?

C. Malla Reddy and colleagues study polymorphic forms of 6-chloro-2,4-dinitroaniline to demonstrate a direct relationship between mechanical properties, crystal structure and tableting behaviour in this HOT CrystEngComm communication.  Understanding the structure-property relationships ocurring in pharmaceuticals and using this knowledge to eliminate inferior active pharmaceutical ingredient properties could play an important role in reducing formulation and manufacturing costs in the industry.

Why not take a look, they will be free to read for 4 weeks.

Direct correlation among crystal structure, mechanical behaviour and tabletability in a trimorphic molecular compound
Partha Pratim Bag,  Miles Chen,  Changquan Calvin Sun and C. Malla Reddy
CrystEngComm, 2012
DOI: 10.1039/C2CE25100K

Crystal engineering and crystallography in the pharmaceutical industry

CrystEngComm, 2012, 14, 2335-2596

You may also be interested in taking a look at our recent themed issue on Crystal engineering and crystallography in the pharmaceutical industry.

Remember you can keep up to date with all the latest news in crystal engineering by liking us on facebook, following us on twitter or signing up to our e-alert service.

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