Archive for February, 2011

Hot Article: native enzymes in hybrid materials for efficient catalysis

A native enzyme, which catalyzes stereoselective aldol reactions, was successfully encapsulated in an inorganic support by Forano, Lemaire, and co-workers. This biocatalyst maintains 100% of enzyme activity through a series of different condensation reactions. In addition, the immobilized enzyme is stable under storage and can be reused several times without a notable loss of activity, highlighting its suitability for organic synthesis.

Efficient immobilization of fructose-6-phosphate aldolase in layered double hydroxide: improved stereoselective synthesis of sugar analogues
Christine Guérard-Hélaine, Bertrand Légeret, Carlos Fernandes, Vanessa Prévot, Claude Forano and Marielle Lemaire
New J. Chem., 2011, Advance Article
DOI: 10.1039/C0NJ00956C, Letter

Curious? Why not read all about it here. This NJC paper has been rated as ‘hot’ and is FREE to access to all for a period of four weeks, after a simple registration process at: http://pubs.rsc.org/en/account/register. Let us know your thoughts and comments below!

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Hot Article : A 3D metal organic framework exhibiting four different magnetic states.

Sutter and co-workers (Laboratoire de Chimie de Coordination, France) report the synthesis of the 3D metal organic framework of formula [K2(H2O)4Mn5(H2O)8(MeCN){Mo(CN)7}3].2H2O. This new coordination polymer exhibits four different ferromagnetic states showing different magnetic properties depending on the structure and on the presence of H2O molecules and thermal history. Thus, the results described in this paper demonstrate that a porous framework can be achieved with the small cyanide ligand that also ensures good magnetic performances.


[K2Mn5{Mo(CN)7}3]: an open framework magnet with four Tc conversions orchestrated by guests and thermal history
Julie Milon, Philippe Guionneau, Carine Duhayon and Jean-Pascal Sutter
New J. Chem., 2011, Advance Article
DOI: 10.1039/C0NJ00860E, Paper
This article was selected as “hot” and will be free to access for a period of four weeks.

The article will also be part of the forthcoming NJC thematic issue on Molecular Materials, to be published in the summer. To stay up-to-date with the latest NJC developments, sign up to its free table-of-contents email alert at www.rsc.org/alerts

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Hot Article : Prussian blue-type thin films and their magnetic anisotropy

Meisel and co-workers (University of Florida, USA) report on the elaboration of thin films of a series of Prussian Blue analogs, together with their magnetic behaviour. These films were shown to exhibit magnetic anisotropy by investigating the magnetic susceptibility, and specifically the difference between parallel and perpendicular orientations of the films with respect to the applied magnetic field. The degree of anisotropy is largely explained by demagnetizing effects, and a simple model is discussed. This paper represents a first step towards the understanding of the anisotropy of thin films of coordination polymer systems, of importance if films are to be used in device applications. Furthermore, this manuscript casts light on the origin of the anisotropy of photomagnetic systems.

Anisotropic magnetism in Prussian blue analogue films
Daniel M. Pajerowski, Justin E. Gardner, Daniel R. Talham and Mark W. Meisel
New J. Chem., 2011, Advance Article
DOI: 10.1039/C0NJ00841A, Paper

  • This article was selected as ‘Hot’ and will be FREE to access for a period of four weeks. Why not read it now and let us know your thoughts by leaving a comment below!
  •  

  • The article will also be part of the forthcoming NJC thematic issue on Molecular Materials, to be published in the summer. To stay up-to-date with the latest NJC developments, sign up to its free table-of-contents email alert at www.rsc.org/alerts
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    2011 NJC Symposium: New Directions in Chemistry

    The 2011 NJC Symposium: New Directions in Chemistry will feature talks by eight well-known chemists, all members of NJC‘s editorial board, working in different areas of chemistry (biochemistry, coordination chemistry, organic chemistry, computational chemistry). These presentations will highlight the contributions of chemistry to a variety of challenges faced by our society today (in fields as diverse as the environment, health, electronics, etc.).

    When: April 11-12, 2011
    Where: ISIS Building on the Esplanade Campus of the University of Strasbourg (Sciences Faculties)
    Organizers: Prof. Mir Wais Hosseini (Strasbourg) and Dr Denise Parent (Montpellier)
    Sponsors: NJC, CNRS Institute of Chemistry, RSC Publishing, University of Strasbourg
    Registration: the symposium is free and open to all interested persons. For organisational purposes we ask you to register your attendance by sending an email to njc@univ-montp2.fr.

    The detailed program is given below.

    Monday, April 11th (session 1)

    16.30 Helen Hailes (University College London, UK) “The use of enzymes in synthesis”
    17.10 Peter Junk (Monash University, Australia) “Rare earths as potential corrosion inhibitors”
    17.50 Michael Scott (University of Florida, USA) “Design and synthesis of soft donor ligands for selective binding of harmful f-elements”

    Tuesday, April 12th (sessions 2 and 3)

    9.00 Barbara Nawrot (Polish Academy of Sciences, Poland) “Chemically modified small inhibitory nucleic acids”
    9.40 Wais Hosseini (University of Strasbourg, France) “Molecular turnstiles”
    10.20 Fabrizia Grepioni (University of Bologna, Italy) “The growing world of crystal forms”
    11.00 Break
    11.20 Odile Eisenstein (University of Montpellier, France) “Determining reaction mechanisms in organometallic chemistry with computational chemistry”
    12.00 Jerry Atwood (University of Missouri-Columbia, USA) “New understanding of the organic solid state”

    Feel free to attend 1, 2, 3 or more lectures, as you wish.

    For further information and updates, please contact Dr Denise Parent at the NJC Editorial Office: njc@uni-montp2.fr.

    Travel and hotel arrangements are the attendee’s responsibility. A list of local hotels is available upon request to valerie.rey@unistra.fr.

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    From red to blue: a new strategy for Uphill Energy Conversion

    Scientists from the universities of Sao Paulo and Thueringen present a new methodology for uphill energy conversion, converting red irradiation light into blue emission light using the instability of 1,2-dioxetanes and converting chemical energy into electronic excitation energy.

    Chemiluminescence-based uphill energy conversion
    Luiz Francisco Monteiro Leite Ciscato, Dieter Weiss, Rainer Beckert, Erick Leite Bastos, Fernando Heering Bartoloni and Wilhelm Josef Baader
    New J. Chem., 2011, Advance Article
    DOI: 10.1039/C0NJ00843E, Letter

    Curious? Why not read this NJC Letter, FREE to access until March 14th 2011

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    Read the latest NJC Perspectives

    Stay up-to-date with these 5 latest NJC Perspectives , all available as advance articles on the web.

    • Read about multiple-decker sandwich complexes containing lanthanide and actinide metals with Frank Edelmann’s article
    • Gain insights into the digestive ripening method, providing access to highly monodispersed nanoparticles as featured by Deepti S. Sidhaye and B. L. V. Prasad
    • Explore the technique of hydrogen/deuterium exchange experiments in the high vacuum of a mass spectrometer to unravel the structural aspects and the gas-phase reactivity of supramolecular complexes, as detailed by Christoph A. Schalley and coworkers
    • Take a tour of the assembly, properties, functions and multiple applications of ferrocenyl dendrimers, as reviewed by Didier Astruc.
    • Delve into rare earths, jewels for functional materials of the future, by Jean-Claude G. Bünzli et al.

     

                          Multiple-decker sandwich complexes of f-elements
                          Frank T. Edelmann
                          New J. Chem., 2011, Advance Article
                          DOI: 10.1039/C0NJ00672F, Perspective

    Many manifestations of digestive ripening: monodispersity, superlattices and nanomachining
    Deepti S. Sidhaye and B. L. V. Prasad,
    New J. Chem., 2011, Advance Article, DOI: 10.1039/C0NJ00359J, Perspective

    Gas-phase H/D-exchange experiments in supramolecular chemistry
    Henrik D. F. Winkler, Egor V. Dzyuba and Christoph A. Schalley
    New J. Chem., 2011, Advance Article
    DOI: 10.1039/C0NJ00634C, Perspective

    Ferrocenyl dendrimers: multi-electron redox reagents and their applications
    Didier Astruc
    New J. Chem., 2011, Advance Article
    DOI: 10.1039/C0NJ00875C, Perspective

    Rare earths: jewels for functional materials of the future
    Svetlana V. Eliseeva and Jean-Claude G. Bünzli
    New J. Chem., 2011, Advance Article
    DOI: 10.1039/C0NJ00969E, Perspective

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

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    NJC Issue 2, 2011 now published

    We welcome you to NJC‘s February issue, out now.

    A Perspective article by Kenneth Kam-Wing Lo and coworkers (University of Hong-Kong) features on this month’s front cover.  In this review article, find out on  some recent examples of luminescent iridium(III) polypyridine complexes as probes for chemical and biological molecules. The targets include proton, cations and anions, small molecules, nucleic acids, protein molecules and cellular structures.

    Development of luminescent iridium(III) polypyridine complexes as chemical and biological probes, Kenneth Kam-Wing Lo, Steve Po-Yam Li and Kenneth Yin Zhang, New J. Chem., 2011, 35, 265-287, DOI: 10.1039/C0NJ00478B Perspective


    The inside front cover showcases the work of V. Haridas et al. (a collaboration from teams in Australia and India), presenting  a new class of peptide-based dendrons and dendrimers that display unique vesicle-driven organogelation.

    Gelation and topochemical polymerization of peptide dendrimers, V. Haridas, Yogesh K. Sharma, Rhiannon Creasey, Srikanta Sahu, Christopher T. Gibson and Nicolas H. Voelcker, New J. Chem., 2011, 35, 303-309, DOI: 10.1039/C0NJ00544D, Paper

    • In this issue, also check out our very second FOCUS article, NJC‘s  new and exciting highlight format, this month on macroporous monoliths and their use as catalytic microreactors:

    Monolithic flow microreactors improve fine chemicals synthesis, Alexander Sachse, Anne Galarneau, Bernard Coq and François Fajula, New J. Chem., 2011, 35, 259-264, DOI: 10.1039/C0NJ00965B, Focus

    You can access and read the whole issue 2 of NJC here. Leave us a comment and let us know what you think!

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    Meet Our Authors

    This month the NJC Blog inaugurates a new monthly feature, which will present a few authors from the month’s issue, selected by one of the NJC Editors to highlight the diversity in NJC. Below, you can meet my choice of 5 authors from the February 2011 issue, presented in reverse alphabetical order (let the Zs be first for once).

    Our first profile is of Professor Xiangyang Shi, who is on the faculty of the College of Chemistry, Chemical Engineering and Biotechnology of Donghua University in Shanghai (P. R. China). “My current research interests are focused on dendrimer-based nanomedicine, and electrospun polymer nanofiber-based technology for applications in both regenerative medicine and environmental sciences.”

    In his NJC paper, Xiangyang and his coworkers report the fabrication of uniform and water-stable electrospun polyethyleneimine/polyvinyl alcohol nanofibers by optimizing electrospinning and crosslinking conditions. The formed nanofibers display a super dye sorption capability, providing a unique material for environmental remediation applications. The interdisciplinary nature of the work, involving polymer chemistry, nanotechnology, and environmental sciences made NJC a logical choice in the authors’ eyes. In addition, they appreciate that “the NJC review and publication process are pretty fast.”

    Outside of the lab, Xiangyang’s favorite activity is travel with family. A recent trip to Beijing allowed his two young sons to discover famous scenic places such as the Great Wall, the Summer Palace, and the Forbidden City. Xiangyang comments that this trip they “started to feel a part of Chinese History”.

    “Fabrication and characterization of water-stable electrospun polyethyleneimine/polyvinyl alcohol nanofibers with super dye sorption capability” by Xu Fang, Shili Xiao, Mingwu Shen, Rui Guo, Shanyuan Wang and Xiangyang Shi, New J. Chem., 2011, 35, 360-368; DOI: 10.1039/C0NJ00764A

    Alejandro Pérez-Rodríguez is Full Professor and Head of Laboratory at the IREC Catalonia Institute for Energy Research in Barcelona, Spain. He is currently working on the development of materials and processes for advanced inorganic thin film photovoltaic technologies. His group’s contribution to this month’s issue describes the development of Raman scattering techniques for quality control and process monitoring in chalcogenide photovoltaic technologies. This is applied as an in situ tool for monitoring the electrochemical synthesis of chalcopyrite absorbers under real time conditions. This “application of chemistry to a real world problem” made the work particularly suitable for NJC.


    Outside the lab, Alejandro enjoys reading and swimming. “My favourite writers are classical English romantics (Jane Austen, Charlotte Bronte, Mary Shelley, …) and crime novels from Conan Doyle and Georges Simenon. In Spanish, I like very much the works from South American authors as Gabriel Garcia Marquez and Isabel Allende.” Currently Alejandro is reading The Bunderbrooks by Thomas Mann.

    “Process monitoring of chalcopyrite photovoltaic technologies by Raman spectroscopy: an application to low cost electrodeposition based processes” by Victor Izquierdo-Roca, Xavier Fontané, Edgardo Saucedo, Jesus Salvador Jaime-Ferrer, Jacobo Álvarez-García, Alejandro Pérez-Rodríguez, Veronica Bermudez and Joan Ramon Morante, New J. Chem., 2011, 35, 453-460; DOI: 10.1039/C0NJ00794C


    The next author is Christine Paul-Roth, Associate Professor at the National Institute of Applied Sciences (INSA) in Rennes, France. Her paper is the fruit of a collaboration between J. A. G. Williams, working in Durham University, on highly luminescent platinum complexes, V. Fattori from Bologna University, a well-known specialist in the elaboration of OLEDs, and herself for the syntheses of the complexes. More generally, her research centres around the design and elaboration of multifunctional porphyrins.

    “Together we have chosen NJC to present this work because of the very large diversity and the high quality of the articles published in the journal. Also, the fact that it corresponds to a multidisciplinary (and international) collaboration between different groups having different specialties makes the work of interest to a more diverse readership.”

    The mother of 3 school-age children, Christine’s favourite activity is to visit the library to share books with them.

    “Platinum and palladium complexes of fluorenyl porphyrins as red phosphors for light-emitting devices” by Samuel Drouet, Christine O. Paul-Roth, Valeria Fattori, Massimo Cocchi and J. A. Gareth Williams, New J. Chem., 2011, 35, 438-444; DOI: 10.1039/C0NJ00561D


    Lajos Kovács is a senior research fellow in the Department of Medicinal Chemistry, University of Szeged (Hungary). His latest contribution to NJC exemplifies the biological orientation of his chemistry research. The paper describes their investigation of 3-substituted xanthines as guanine analogues in self-assembly to yield tetrads or higher order structures in the presence of cations. “We have been pleased to see that our computational approach can be nicely complemented by experimental data (MS, NMR) supporting the existence of tetrameric and octameric aggregates involving 3-methylxanthine, the simplest representative of the above family.” Their previous positive experience with NJC decided them on publishing again in the journal.

    Lajos’ non-scientific interests include reading, hiking and photography. Lajos notes that near Szeged there are not many places for hiking but that he takes pictures regularly when traveling. “One of my favourite places is Scotland and I send herewith a picture of mine from Isle of Skye in the Inner Hebrides.”

    “3-Substituted xanthines as promising candidates for quadruplex formation: computational, synthetic and analytical studies” by János Szolomájer, Gábor Paragi, Gyula Batta, Célia Fonseca Guerra, F. Matthias Bickelhaupt, Zoltán Kele, Petra Pádár, Zoltán Kupihár and Lajos Kovács, New J. Chem., 2011, 35, 476-482; DOI: 10.1039/C0NJ00612B

    The last profile is of Canada Research Chair in Green Chemistry Philip Jessop, who is a Professor at Queen’s University and the GreenCentre in Kingston (Ontario, Canada). As you might guess, his field is green chemistry and more specifically the chemistry of CO2 and H2 gases. “If H2 storage is ever going to work, I really believe it needs to be in liquid carriers, because liquids are pumpable and storable without pressure. But conventional liquid carriers of H2 don’t carry much H2, so we have been exploring creative ways of solving that.” On his reasons for publishing his work in NJC, Philip comments: “It’s always nice to publish in the same forum as others in the same field.”

    To take a break from his scientific life in the fast lane, Philip, who loves nature, stalks wildlife with his camera. “The most important thing in my mind is the perfect setting and pose. Getting this heron and the setting sun lined up perfectly, before my movements scared the heron away, was tricky.”

    “The effect of temperature, catalyst and sterics on the rate of N-heterocycle dehydrogenation for hydrogen storage” by Darrell Dean, Boyd Davis and Philip G. Jessop, New J. Chem., 2011, 35, 417-422; DOI: 10.1039/C0NJ00511H

    I hope you’ve enjoyed getting to know some of your fellow chemists a little better. (It was certainly fun for me.) Clicking on the links above will lead you to their papers, which illustrate diverse fields of chemistry and their applications to the solution of a variety of problems.

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