Archive for the ‘Themed Issue’ Category

Meet Our Authors: October 2011 (Part 2: Friends)

Since the October issue of NJC is dedicated to Didier Astruc, we asked some of the contributors to share their souvenirs of Didier with us.

The authors highlighted in this article are some of Didier’s scientific friends. In a companion article, we talked with three former collaborators.

Holger Butenschön is a Professor at Leibniz University in Hannover, working in the fields of organic and organometallic chemistry.

Holger first met Didier at an organometallic chemistry conference in Gera, Germany, in the summer of 1990. He recalls that “We had a good time together with Peter Vollhardt and others.” They met on several other occasions, including during the summer holidays that Holger spent with his family near Bordeaux. The last time their paths crossed was in Düsseldorf at a ferrocene conference: “this gave us the chance to share a bottle of good red wine in the hotel.”

“Didier’s work was always a valuable source of new ideas. Myself coming from organic chemistry, his way of thinking broadened my mind.” Holger clearly remembers a small detail: Didier whistles when he finds something is interesting or remarkable.

Paola Ceroni, currently Associate Professor of chemistry at the University of Bologna, studies the photochemistry of supramolecular systems and nano-objects, with particular attention devoted to photoactive dendrimers.

Paola has no direct connection with Didier, but has followed his pioneering work on dendrimers since her student days. She explains that “his research on electroactive dendrimers has been very stimulating for my research, particularly with reference to molecular batteries and electrochemical sensors with signal amplification.” Didier’s visit to Bologna in 2009, on the occasion of the joint prize of the Italian and French Chemical Societies, was the occasion for them to enjoy a walking tour of the city.

Hiroshi Nishihara is Professor of chemistry and Vice Dean of the School of Science of the University of Tokyo. His research centers on the creation of new electro-, photo-, and magneto-functional materials based on transition metal complexes, donor-acceptor conjugated systems, and/or metal nanoparticles.

Hiroshi and Didier have a very close relationship, dating back to their meeting in 1998 at the first Chianti Meeting on Inorganic Electrochemistry (ChiMIE). Hiroshi was from the start much impressed by Didier’s intellectual knowledge and wonderful personality, and has appreciated the valuable advice given by Didier. “Discussion with him is always encouraging and gives me new ideas.”

The two friends have met many times since on various occasions. Hiroshi in particular recalls trips together to beautiful and historical places, such as Maui. Hiroshi has visited Didier in Bordeaux four times, and Didier has reciprocated with stays in Tokyo on two occasions. In addition, each has welcomed a student from his colleague’s group: Marie-Christine Daniel went to Tokyo while Tetsuro Kusamoto spent time in Bordeaux.

Our authors briefly comment their contributions to the dedicated issue:

New cyclopentadienylethylphosphane chelate complexes with unsymmetrical phosphane substitution by Karin Janssen (née Kirleis) and Holger Butenschön, New J. Chem., 2011, 35, 2287-2298. DOI: 10.1039/C1NJ20292H

While cyclopentadienylalkylphosphane chelate complexes with two identical substituents at phosphorus have been widely investigated, our contribution presents the first cobalt chelates with different substituents at phosphorus. This causes some asymmetry and gives an insight into the through-space interactions of the substituents with the other ligands present in the complex.

Designing light harvesting antennas by luminescent dendrimers by Vincenzo Balzani, Giacomo Bergamini, Paola Ceroni and Enrico Marchi, New J. Chem., 2011, 35, 1944-1954. DOI: 10.1039/C1NJ20142E

Dendrimers are macromolecules with extraordinary properties: their aesthetically pleasing structures enable a controlled organization of different functional units. This is a prerequisite to build up an efficient molecular antenna, in which the light absorbed by the peripheral units is funneled to a common acceptor by a sequence of energy transfer steps. Applications of these systems to the conversion of solar energy into electricity or fuels as well as sensors with signal amplification are envisaged.

Synthesis of photo-switchable 3-FcAB-modified polymer particles by Kosuke Namiki, Masaki Murata, Shoko Kume and Hiroshi Nishihara, New J. Chem., 2011, 35, 2146-2152. DOI: 10.1039/C1NJ20189A

We introduced 3-ferrocenylazobenze to the polymer particles and succeeded in reversible trans-cis isomerization of the azobenzene moiety by green light irradiation combined with redox reaction of the ferrocene moiety. This result can lead to developing a photo-switching system using spectroscopic detection of the isomerization behaviors of nano-dots.

For the full list of articles comprising this dedicated issue, click here!

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NJC Themed Issue 10 online – in honor of Prof. Didier Astruc

NJC is delighted to introduce this issue in honor of Didier Astruc, on the occasion of his 65th birthday. The outside front cover highlights molecules from 5 of the articles in this issue, placed on a background of grape leaves and vineyards (in honor of Didier’s Bordeaux location).

We’ve invited his colleagues, Jean-René Hamon, Jean-Yves Saillard and Jaime Ruiz, to introduce this special issue and highlight Didier’s many outstanding scientific achievements in a wide range of research areas, including organometallic chemistry, catalysis, molecular chemistry, dendrimers and nanostructures.

Introduction to the themed issue in honour of Prof. Didier Astruc. A success story from electron reservoir complexes to dendritic molecular nanostructures, New J. Chem., 2011, 35, 1931-1932; DOI: 10.1039/C1NJ90032C

The articles presented in this themed issue of NJC address recent developments in material science, cancer research, organometallic complexes, metallodendrimers and preparation of nanostructures, amongst other themes. New ideas are presented, some long-held views are strengthened and others are questioned.

In all, there are 56 articles including 2 Focuses, 4 Perspectives, 6 Letters and 44 Full papers. The high quality of research presented exemplifies what scientists are able to achieve, and Didier Astruc certainly occupies a leading position among them.

Some of the articles in this themed issue:

A new series of ferrocifen derivatives, bearing two aminoalkyl chains, with strong antiproliferative effects on breast cancer cells; Pascal Pigeon, Siden Top, Anne Vessières, Michel Huché, Meral Görmen, Mehdi El Arbi, Marie-Aude Plamont, Michael J. McGlinchey and Gérard Jaouen; New J. Chem., 2011, 35, 2212-2218; DOI: 10.1039/C1NJ20192A

Synthesis of spin crossover nano-objects with different morphologies and properties; Alexey Tokarev, Lionel Salmon, Yannick Guari, Gábor Molnár and Azzedine Bousseksou; New J. Chem., 2011, 35, 2081-2088 DOI:10.1039/C1NJ20218A

A meta-xylenediamide macrocycle containing rotaxane anion host system constructed by a new synthetic clipping methodology; Nicholas H. Evans, Christopher J. Serpell and Paul D. Beer; New J. Chem., 2011, 35, 2047-2053; DOI: 10.1039/C1NJ20109C

The inside front cover by Hiroshi Nishihara and co-workers (University of Tokyo) represents their work on 3-ferrocenylazobenzene (3-FcAB) containing polymer particles, envisioning their potential application to act as nano-sized photo-memories or switches.

Synthesis of photo-switchable 3-FcAB-modified polymer particles by Kosuke Namiki, Masaki Murata, Shoko Kume and Hiroshi Nishihara; New J. Chem., 2011, 35, 2146-2152; DOI: 10.1039/C1NJ20189A

A symposium in honor of Didier Astruc will be held in Bordeaux (December 1–2, 2011) at which Yves Chauvin (2005 Nobel Laureate) will present this themed issue to Didier. The two-day symposium program will include plenary lectures by Henri Kagan and Jean-Pierre Sauvage, 25 other lectures, as well as a Grand Public discussion with Yves Chauvin.

Don’t miss the October themed Issue 10, available online!

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Exploring the nanoscale properties of spin crossover materials

In this collaborative work from the universities of Toulouse and Montpellier (France), Lionel Salmon, Azzedine Bousseksou and co-workers have built on their development of synthetic routes to spin crossover compound (SCO) nanoparticles, to investigate the structure-property relashionships of the various nano-objects morphologies, be it as dispersed colloids, fibrous structures or nanoparticle powders.

Amongst other findings, their work now shows that the cooperativity of spin crossover transition does not require that the complex is in solid state, and that even ultra-small (down to 3 nm) spin crossover nanoparticles can exhibit a cooperative transition, offering interesting perspectives for practical applications of SCO compounds.

Interested in reading further? Why not download the full article now, FREE to access for a period of 4 weeks!

Synthesis of spin crossover nano-objects with different morphologies and properties
Alexey Tokarev, Lionel Salmon, Yannick Guari, Gábor Molnár and Azzedine Bousseksou
New J. Chem., 2011, Advance Article, DOI: 10.1039/C1NJ20218A, Paper

This article will be part of the themed issue of NJC honouring the life and work of Prof. Didier Astruc, on the occasion of his 65th birthday – Coming soon.

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Meet Our Authors – June 2011

This month we talk with a few authors from the Molecular Materials themed issue. Below, you can meet my selection of 5 authors from this issue. Many thanks to them for agreeing to play the game of “who are you?”!
An excellent BODIPY dye containing a benzo[2,1,3]thiadiazole bridge as a highly selective colorimetric and fluorescent probe for Hg2+ with naked-eye detection
Hui-Bin Sun, Shu-Juan Liu, Ting-Chun Ma, Nan-Nan Song, Qiang Zhao and Wei Huang
New J. Chem., 2011, 35, 1194-1197; DOI: 10.1039/C0NJ00850H


Our first profile is of Professor Wei Huang, who is Deputy President of Nanjing University of Posts and Telecommunications (P. R. China) and director general of the Key Laboratory for Organic Electronics & Information Displays. His research covers organic and plastic electronics, chemo- and biosensors, information materials and devices, nano materials and technology, bioelectronics.

In his NJC paper, Wei and colleagues propose a new probe to monitor mercury ions, an important polluant, using optical and electrochemical signaling to achieve high selectivity and sensitivity.

Wei notes: “We have been interested in the field of chemo and biosensors for many years and have published many research papers in this field. We wish to develop a series of excellent optical probes for cations, anions, and biomolecules, etc. The research idea of this work was stimulated and formed by our previous work. We chose mercury as the target analyte because of its high toxicity and BODIPY dye as probe because of its excellent photophysical properties.”

When asked what you wanted to be when he was young, Wei replied: “I was dreaming of being a scientist who may create some wonderful high-tech products for mankind. It would be very difficult for me to think of my not being a chemist since I am very fond of chemistry.”

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A monolayer of a Cu2+-tetraazamacrocyclic complex on glass as the adhesive layer for silver nanoparticles grafting, in the preparation of surface-active antibacterial materials
Piersandro Pallavicini, Giacomo Dacarro, Lucia Cucca, Frank Denat, Pietro Grisoli, Maddalena Patrini, Nicolas Sok and Angelo Taglietti
New J. Chem., 2011, 35, 1198-1201; DOI: 10.1039/C0NJ00829J

Piersandro Pallavicini is Associate Professor in the Chemistry Department of the University of Pavia (Italy). His research interests center on the synthesis of inorganic nano-objects, modification of inorganic surfaces, coordination chemistry and sensing in micellar nanocontainers.

Piersandro remarks that “classical coordination chemistry is rarely carried out on surfaces. Despite this, I believe that all the enormously developed coordination chemistry in solution, particularly in the macrocyclic ligands area, could bring brilliant and precious features to the chemistry of self-assembled monolayers on bulk surfaces. Our paper is just one suggestion of what can be done.”

This project came into being thanks to the collaboration of the Pavia group with that of Frank Denat at the Université de Bourgogne, in Dijon (France).

“The Dijon team has developed an arsenal of brilliant strategies for the synthesis of polyaza macrocyclic ligands, and we were working together since some years on functional tetraaza macrocycles for the assembly of molecular devices in micellar containers. In the meantime we had started working on the modification of surfaces to impart them antibacterial properties by means of the release of inorganic cations. The idea of preparing a surface with a SAM capable of bearing (and eventually releasing) two antibacterial cations, Cu2+ and Ag+, led us to this project.”

Piersandro is another chemist with an early vocation: “I was resolutely oriented towards chemistry since when I was a child. As a 9 years old boy I monopolized an entire room in our house, that became my laboratory and that I stuffed with all the Chemistry Sets available on the toys market. I love to be a chemist.”

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[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, 35, 1211-1218; DOI: 10.1039/C0NJ00860E


Our next author is Jean-Pascal Sutter, a CNRS research director in the Coordination Chemistry Laboratory located in Toulouse (France). He works on material-directed coordination and supramolecular chemistry, more specifically on molecular magnets and open-framework materials.

In commenting on his NJC paper, Jean-Pascal says: “It is often considered that porous frameworks and exchange-based magnetism are antagonist properties in terms of performances; the reported magnet demonstrates that a porous framework can be achieved with good magnetic performances. Modest porosity (28%) is sufficient to observe fast and efficient sorption processes by the framework that permit converting the attributes of the corresponding magnets.”

Jean-Pascal continues that this research project came about “as often in research, by serendipity! The idea to adapt the structural features to favor labile ligand exchange formed back in 2003, when we observed that the loss of a ligand by a metal ion did significantly increase the ordering temperature of a magnet.”

If he couldn’t be a chemist, Jean-Pascal replied: “Difficult question; most certainly something where creativity is also important.” He sounds hesitant to even envisage the possibility of not being a chemist!

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Controlled growth of core@shell heterostructures based on Prussian blue analogues
M. Presle, J. Lemainque, J.-M. Guigner, E. Larquet, I. Maurin, J.-P. Boilot and T. Gacoin
New J. Chem., 2011, 35, 1296-1301; DOI: 10.1039/C0NJ00857E

Isabelle Maurin is also a CNRS research scientist, working at the Laboratoire de Physique de la Matière Condensée at the Ecole Polytechnique in Palaiseau (France).

Isabelle has been working in the field of photo-induced phase transitions in molecular solids since 2003. “Together with a better understanding of the local and macroscopic structural changes associated to these transitions, I have been trying since 2009 to extend the concept of molecular photomagnetism to multiferroic-like heterostructures based on the combination of photostrictive and piezomagnetic compounds. The first key issue was the control of the chemical composition in the heterostructure, which is is the object of the paper published in NJC.”

Before choosing chemistry, Isabelle considered become “an archeologist to combine travels in territories with high cultural inheritance (Egypt, Persia …), history and research.”

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Electrochromic devices and thin film transistors from a new family of ethylenedioxythiophene based conjugated polymers
Zhongtao Li, Yuan Zhang, Amanda L. Holt, Borys P. Kolasa, Justin G. Wehner, Andreas Hampp, Guillermo C. Bazan, Thuc-Quyen Nguyen and Daniel E. Morse
New J. Chem., 2011, 35, 1327-1334; DOI: 10.1039/C0NJ00837K


Our last profile is of Professor Daniel Morse, who is currently Emeritus Founding Director of the UCSB-MIT-Caltech Institute for Collaboratoive Biotechnologies, as well as Wilcox Professor of Biomolecular Science and Engineering at UCSB (University of California Santa Barbara, USA). His research theme is bio-inspired routes to materials with advanced functionalities.

In their NJC paper, Dan and his colleagues synthesized a new family of electrochromic polymers that show switchable absorption in the infrared in the absence of water. “These offer promise for electrically activated solid-state shutters and filters in the IR, since their high charge transfer mobility and ion injection efficiency permits relatively rapid switching and good switchable contrast, while their robustness and longevity exceed those of aqueous devices.”

This work had its inspiration in nature, as Dan recounts it: “We recently discovered the molecular mechanisms governing the dynamic, tunable changes in color and reflectance that squids and octopi use to change their color and reflectance for camouflage and communication. Our colleagues at Raytheon Vision Systems, Inc., approached us to ask if we might be able to translate these mechanisms to an electrically switchable, synthetic polymer-based filter and shutter for cameras operating in the infrared. This gave rise to the productive and close collaboration that produced the materials and devices described in our paper.”

Apparently this approach is a long-ingrained one for Dan: “I was always fascinated by the natural world, both organic and inorganic, and the mechanisms that make it tick.”
I hope you’ve enjoyed reading this and getting to know some of your fellow chemists a little better. I’m struck how most of them were bitten by the chemistry bug at a very early age. What about you?

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Molecular Materials Themed Issue (NJC-June 2011)

NJC is delighted to present this month’s themed issue on Molecular Materials (MOLMAT2010), guest-edited by Prof. Joulia Larionova and Dr. Yannick Guari.

This themed issue of NJC, arising from the 4th edition of the MOLMAT Conference held in Montpellier (France) during July 2010, reflects the variety of approaches and methods used for the synthesis, studies of properties, modeling and processing of smart molecular materials.

The twenty-four articles in this issue, including 2 Perspective reviews, 5 Letters and 17 full Papers, provide broad coverage of various aspects of systems relevant to Molecular Materials.

The Perspective review by Luis Carlos and colleagues on lanthanide-based luminescent molecular thermometers illustrates the outside front cover.
Lanthanide-based luminescent molecular thermometers, Carlos D. S. Brites, Patricia P. Lima, Nuno J. O. Silva, Angel Millán, Vitor S. Amaral, Fernando Palacio and Luís D. Carlos, New J. Chem., 2011, 35, 1177-1183; DOI: 10.1039/C0NJ01010C, Perspective

A second Perspective by Jean-Claude Bünzli reviews the use of rare earths for functional materials.
Rare earths: jewels for functional materials of the future, Svetlana V. Eliseeva and Jean-Claude G. Bünzli, New J. Chem., 2011, 35, 1165-1176; DOI: 10.1039/C0NJ00969E, Perspective

The inside front cover features the research of Juan Olguín and Sally Brooker on 3- and 5-formyl-4-phenyl-1H-pyrazoles for the generation of asymmetric imine ligands and mixed metal polynuclear complexes.
Synthesis of 3- and 5-formyl-4-phenyl-1H-pyrazoles: promising head units for the generation of asymmetric imine ligands and mixed metal polynuclear complexes, Juan Olguín and Sally Brooker, New J. Chem., 2011, 35, 1242-1253; DOI: 10.1039/C0NJ00774A, Paper

Take your pick amongst the several growing research fields making use of molecular materials that are part of this themed issue.

Profiles of 5 of this month’s authors will be posted shortly, so keep an eye out for these.

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Novel rotaxane receptor for selective anion recognition

Scientists in the UK have designed a novel meta-xylenediamide macrocycle containing rotaxane anion host.

Following on their pioneering work in the area, the team led by Paul Beer at Oxford University demonstrates a unique guest binding effect in which the interlocked host is able to bind chloride and bromide anions selectively, vs. more basic oxoanions such as dihydrogen phosphate and acetate. Their research highlights how only the monoatomic halides are able to enter the rotaxane cavity, while the larger oxoanions bind to the periphery.

Researchers in a number of ‘supramolecular fields’, such as host-guest chemistry, anion binding, self-assembly, or molecular machines, will be interested in this high-impact chemistry.

Why not take a look at it now! Highly rated by the reviewers and the editorial office alike, this ‘Hot Article’ will be FREE to access for a period of 4 weeks.

A meta-xylenediamide macrocycle containing rotaxane anion host system constructed by a new synthetic clipping methodology, Nicholas H. Evans, Christopher J. Serpell and Paul D. Beer
New J. Chem., 2011, Advance Article
DOI: 10.1039/C1NJ20109C

This article will also be part of the themed issue of NJC honouring the life and work of Prof. Didier Astruc, on the occasion of his 65th birthday – Coming out this Autumn.

  • Don’t miss this high-profile issue – sign up to the journal e-alert now!

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  • Hot Article: multirotaxanes molecular shuttles

    While a relatively large number of [2]-rotaxanes, in which a ring is threaded by an axle, have been reported in the literature, [3]-rotaxanes (where two macrocyclic rings are able to move along the axis on which they are threaded in a controlled fashion) and [4]-rotaxanes (where 3 macrocycles are threaded on the axle) still prove a real synthetic challenge.

    In this NJC Letter, the group of J.-P. Sauvage (Strasbourg, France) provide insights on the successful preparation of multirotaxanes, and synthesize a [2]-, a [3]- and a [4]-rotaxane in the same reaction.


    …Interested?

  • Find out how, and read on the synthetic route envisioned by this leading group by accessing the full article now!

  • Article FREE to access until 20th June.

    Synthesis of [2]-, [3]-, and [4]rotaxanes whose axis contains two bidentate and two tridentate chelates, Jean-Paul Collin, Stéphanie Durot, Jean-Pierre Sauvage and Yann Trolez
    New J. Chem., 2011, Advance Article
    DOI: 10.1039/C1NJ20213H

    This article will be part of the themed issue of NJC honouring the life and work of Prof. Didier Astruc, on the occasion of his 65th birthday – Coming soon.

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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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    NJC Biophosphates thematic issue at ICPC 2010

    NJC was delighted to introduce a high-profile thematic issue on Biophosphates at the 18th International Conference on Phosphorus Chemistry (ICPC 2010) held in Wroclaw (Poland) this past July.

    This themed issue, guest-edited by Barbara Nawrot and Jean-Pierre Majoral, deals with the large scientific area of biophosphates, lying at the interface of chemistry and biology. All contributions are a tribute to Professor Wojciech J. Stec‘s great scientific achievements, and a nice surprise gift on the occasion of his 70th birthday.

    Prof. Wojciech J. Stec receiving the Biophosphates theme issue. Photo by M.K. Margielski

    Prof. Stec was presented with the theme issue on the one-day symposium organized within the conference, comprising presentations by leading scientists including George M. Blackburn, Karol S. Bruzik, Marvin H. Caruthers, Charles McKenna, Gerald Zon, Jonathan P. Waltho who all joined in to express their appreciation of Prof. Stec’s outstanding contribution to the fields of phosphorus and bioorganic chemistry. Colleagues and friends then met for a dinner reception to celebrate Prof. Stec’s birthday in a relaxed and joyful atmosphere.

    Speakers and delegates attending the symposium in the honour of Prof. Stec. Photo by M.K. Margielski

    Why not have a look at the Biophosphates thematic issue, available online at: NJC 2010 Issue 5

    Take your pick amongst the 26 articles, including 7 reviews, on a variety of topics including the synthesis and mechanistic studies of nucleotides and oligonucleotides, enzymes and gene expression inhibitors, nucleic acid analogs with novel functionalities and potential therapeutics.

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    MOFs, MILs and more

    In this Perspective article, authors C. Janiak and J. K. Vieth, at the University of Freiburg, Germany, cover the concepts of porous coordination networks, including metal–organic frameworks (MOFs), Materials Institute Lavoisier (MILs), iso-reticular metal–organic frameworks (IR-MOFs), porous coordination networks (PCNs), zeolitic metal–organic frameworks (ZMOFs) and porous coordination polymers (PCPs) , and highlight their associated functional properties. 

    Read this NJC Perspective today : 

    MOFs, MILs and more : concepts, properties and applications for porous coordination networks (PCNs) Christoph Janiak and Jana K. Vieth,  New J. Chem., 2010, DOI: 10.1039/C0NJ00275E

    This article will be part of the forthcoming thematic issue on ‘Coordination Polymers : Structure and Function’, guest-edited by Prof. Kumar Biradha, to be out in the November issue of NJC.

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