Chemistry – An Asian Journal

Cover image for Vol. 4 Issue 6

Special Issue: In Honor of Professor C. N. R. Rao for His 75th Birthday

June 2, 2009

Volume 4, Issue 6

Pages 779–1011

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Editorial
    4. Graphical Abstract
    5. News
    6. Focus Reviews
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    1. Cover Picture (Chem. Asian J. 6/2009) (page 779)

      Article first published online: 26 MAY 2009 | DOI: 10.1002/asia.200990017

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      Professor C. N. R. Rao will celebrate his 75th birthday in June 2009. As one of the world's foremost solid-state and materials chemists, he has had an enormous influence on generations of chemists throughout India and the world. Celebrations of Professor Rao's 75th birthday started already last June and will culminate on June 30, 2009. As part of these celebrations and to give tribute to Professor Rao's illustrious career and contributions to the chemistry community, this special issue in honor of this occasion includes 27 invited contributions from top scientists throughout the world, including a special introduction by Professor Srinivasan Natarajan.

  2. Editorial

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    3. Editorial
    4. Graphical Abstract
    5. News
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  3. Graphical Abstract

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    1. Graphical Abstract: Chem. Asian J. 6/2009 (pages 782–789)

      Article first published online: 26 MAY 2009 | DOI: 10.1002/asia.200990018

  4. News

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    3. Editorial
    4. Graphical Abstract
    5. News
    6. Focus Reviews
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  5. Focus Reviews

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    1. Carbon Nanostructures

      Nanographene and Nanodiamond; New Members in the Nanocarbon Family (pages 796–804)

      Toshiaki Enoki, Kazuyuki Takai, Vladimir Osipov, Marina Baidakova and Alexander Vul'

      Article first published online: 17 APR 2009 | DOI: 10.1002/asia.200800485

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      Join the family: Nanographene and nanodiamond are new members of nanocarbons, which consist of nano-sized hexagonal and tetrahedral networks, respectively. In contrast to other members of the nanocarbon family, such as fullerenes and carbon nanotubes, the edge or surface in nanographene or nonodiamond plays an essential role in determining their electronic structure.

    2. Nanomaterials

      Organic Nanomaterials: Morphological Control for Charge Stabilization and Charge Transport (pages 806–823)

      P. Pramod, K. George Thomas and Manapurathu V. George

      Article first published online: 15 MAY 2009 | DOI: 10.1002/asia.200900014

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      How grows it? Organic nanostructured materials have been projected as active components in optoelectronic devices. Recent efforts in manipulating the morphology of organic nanomaterials, particularly on their size and shape, are summarized in this Focus Review. Potential application of organic nanostructured materials in charge stabilization and transporting are also discussed.

  6. Communications

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    1. Organogels

      Solvent-Directed Self-Assembly of π Gelators to Hierarchical Macroporous Structures and Aligned Fiber Bundles (pages 824–829)

      Sukumaran S. Babu, Sankarapillai Mahesh, Kalathil K. Kartha and Ayyappanpillai Ajayaghosh

      Article first published online: 13 MAY 2009 | DOI: 10.1002/asia.200900145

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      Morphology variation: The Boc-alanine linked OPV exhibits an unprecedented formation of periodic macroporous honeycomb structures in chloroform and aligned fiber bundles in toluene (see SEM images). This represents a unique example for a distinct morphology change of an organogelator from macroporous honeycomb to aligned fiber bundles upon changing the solvent.

    2. Supramolecular Materials

      From Supramolecular Organoplatinum(II) Nanowires to Platinum-Containing Nanocomposites (pages 830–834)

      Wei Lu, Kwan-Ming Ng and Chi-Ming Che

      Article first published online: 3 APR 2009 | DOI: 10.1002/asia.200900001

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      Sorting themselves out: Organometallic supramolecular nanowires are self-assembled from hybrid cyclometalated PtII complexes and used as templates or precursors for various nanocomposites, such as Pt§SiO2 nanotubes and Pt§carbon nanolayers.

    3. Nanocomposites

      Magnesium/Copper Nanocomposite through Digestive Ripening (pages 835–838)

      Suresh Babu Kalidindi and Balaji R. Jagirdar

      Article first published online: 28 MAR 2009 | DOI: 10.1002/asia.200800447

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      Composing nanocomposites: Co-digestive ripening of as-prepared Mg and Cu colloids prepared by the solvated metal atom dispersion method results in a highly monodisperse colloid of Mg/Cu nanocomposite with an average particle size of 3.0±0.5 nm. Annealing of these samples at 300 °C gives the Cu/MgO nanocomposite.

  7. Full Papers

    1. Top of page
    2. Cover Picture
    3. Editorial
    4. Graphical Abstract
    5. News
    6. Focus Reviews
    7. Communications
    8. Full Papers
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    1. Gold Nanoparticles

      Probing the Initial Stages of Molecular Organization of Oligo(p-phenylenevinylene) Assemblies with Monolayer Protected Gold Nanoparticles (pages 840–848)

      Vattakattu R. Rajeev Kumar, Vadukumpulli Sajini, Theruvakkattil S. Sreeprasad, Vakayil K. Praveen, Ayyappanpillai Ajayaghosh and Thalappil Pradeep

      Article first published online: 21 MAY 2009 | DOI: 10.1002/asia.200900010

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      Tapes, fibrils, and fibers: Thiol-protected gold nanoparticles have been used to probe the initial stages of the molecular organization of oligo(p-phenylenevinylene) gelators. The oligo(p-phenylenevinylene) molecules self-assemble to form tapes. Further self-assembly leads to the formation of fibrils, which in turn self-assemble to form fibers. The existence of these forms has been confirmed by nanoparticle marking.

    2. Ammonia Storage

      The Monoammoniate of Lithium Borohydride, Li(NH3)BH4: An Effective Ammonia Storage Compound (pages 849–854)

      Simon R. Johnson, William I. F. David, David M. Royse, Marco Sommariva, Christina Y. Tang, Francesca P. A. Fabbiani, Martin O. Jones and Peter P. Edwards

      Article first published online: 30 APR 2009 | DOI: 10.1002/asia.200900051

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      Store it up: The ammoniate, Li(NH3)BH4, has been prepared and fully characterized by Raman and NMR spectroscopy and X-ray powder diffraction. The potential for its use as an ammonia store and a comparison to other ammonia storage materials is discussed.

    3. Charge Transfer

      Tuning the Electronic Structure of Graphene by Molecular Charge Transfer: A Computational Study (pages 855–860)

      Arun K Manna and Swapan K Pati

      Article first published online: 25 MAR 2009 | DOI: 10.1002/asia.200800486

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      Insulating semiconducting conductors? The electronic properties of graphene can be tuned through molecular charge transfer, induced by organic electron donor (acceptor), TTF (TCNE, TCNQ), molecules. Such molecular-charge-transfer process has significant effects on optical and transport properties, in particular the characteristic Raman spectra of graphene.

    4. Expanded Porphyrins

      Modified 26 and 28 π Hexaphyrins with Five meso-Links: Optical, Redox, and Structural Properties (pages 861–869)

      Sabapathi Gokulnath, Viswanathan Prabhuraja, Cherumuttathu H. Suresh and Tavarekere K. Chandrashekar

      Article first published online: 10 FEB 2009 | DOI: 10.1002/asia.200800397

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      Redox active hexaphyrins: Modified hexaphyrins with five meso links have been synthesized and characterized. These hexaphyrins not only exhibit conformational flexibility but also undergo facile redox interconversion between aromatic 26π and 28π non-aromatic systems in accordance with (4n+2) Hückel's rule.

    5. Coordination Polymers

      Control of Structure Dimensionality and Functional Studies of Flexible CuII Coordination Polymers (pages 870–875)

      Sujit K. Ghosh, Ramachandan Azhakar and Susumu Kitagawa

      Article first published online: 26 FEB 2009 | DOI: 10.1002/asia.200800458

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      Flexibility′s the key! Control synthesis of 1D, 2D, and 3D CuII coordination polymers of flexible ligands were performed by changing the reaction conditions. One 2D compound showed solvent-induced reversible structural transformation between crystalline and amorphous phases. The dehydrated phase of the 2D compound showed size and affinity-based selective sorption of solvents.

    6. Liquid Crystals

      Unusual Side-Chain Effects on Charge-Carrier Lifetime in Discotic Liquid Crystals (pages 876–880)

      Jin Motoyanagi, Yohei Yamamoto, Akinori Saeki, Md. Akhtarul Alam, Atsushi Kimoto, Atsuko Kosaka, Takanori Fukushima, Shu Seki, Seiichi Tagawa and Takuzo Aida

      Article first published online: 18 FEB 2009 | DOI: 10.1002/asia.200800481

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      Long live the carrier! Hexa-peri-hexabenzocoronene derivatives, carrying paraffinic side chains terminated with ester–ether groups, form hexagonal columnar assemblies over a wide temperature range including room temperature. Within this temperature range, the lifetimes of charge carriers generated by laser flash photolysis are observed to be extremely long (14–40 ms).

    7. Anatase Pigments

      Tin(II) Doped Anatase (TiO2) Nanoparticles: A Potential Route to “Greener” Yellow Pigments (pages 881–885)

      Moumita Ghosh, V. Pralong, A. Wattiaux, A. W. Sleight and M. A. Subramanian

      Article first published online: 23 MAR 2009 | DOI: 10.1002/asia.200900028

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      Benign by design: Tin(II) doped anatase TiO2 nanoparticles, a potential candidate as environmentally benign yellow pigments, have been synthesized. The presence of Sn2+ in anatase structure has been confirmed by various analytical techniques including optical and 119Sn Mössbauer spectroscopy.

    8. Gas Storage

      Methane Sorption and Structural Characterization of the Sorption Sites in Zn2(bdc)2(dabco) by Single Crystal X-ray Crystallography (pages 886–891)

      Hyunuk Kim, Denis G. Samsonenko, Sunirban Das, Ghyung-Hwa Kim, Heung-Soo Lee, Danil N. Dybtsev, Elena A. Berdonosova and Kimoon Kim

      Article first published online: 9 APR 2009 | DOI: 10.1002/asia.200900020

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      Store it away: Methane adsorption isotherms of Zn2(bdc)2(dabco) (1) are measured up to a pressure of 35 bar. X-ray structure analysis of methane-adsorbed 1 at 90 K reveals that methane molecules occupy three independent sorption sites A, B, and C while interacting with the framework as well as each other through van der Waals interactions.

    9. Metal–Organic Framework

      1 D Tubular and 2 D Metal–Organic Frameworks Based on a Flexible Amino Acid Derived Organic Spacer (pages 892–903)

      Jean-Noël Rebilly, John Bacsa and Matthew J. Rosseinsky

      Article first published online: 4 MAY 2009 | DOI: 10.1002/asia.200900078

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      Flexible, yet rigid! A ligand derived from glutamic acid generates chiral MOF architectures ranging from 1D to 2D that are organized in the crystal through a complex hierarchy of coordination and hydrogen bonds that include encapsulation of solvent molecules. The flexibility of the ligand backbone gives access to several topologies and dimensionalities depending on the type of metal center used in the synthesis.

    10. Nanocrystals

      Effect of Structural Modification on the Quantum-Size Effect in II–VI Semiconducting Nanocrystals (pages 904–909)

      Ranjani Viswanatha and D. D. Sarma

      Article first published online: 11 MAY 2009 | DOI: 10.1002/asia.200900046

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      Formation also matters: A model to understand the variation in the bandgap with size for nanoclusters is presented. This model shows that the confinement effect and consequent bandgap variation depend not only on shape and size, but also on the structure of the nanocrystal.

    11. Bolaamphiphiles

      Photodimerization Processes in Self-Assembled Chiral Oligo(p-phenylenevinylene) Bolaamphiphiles (pages 910–917)

      Subi J. George, Tom F. A. de Greef, Ralf Bovee, Joost L. J. van Dongen, Albertus P. H. J. Schenning and E. W. Meijer

      Article first published online: 9 APR 2009 | DOI: 10.1002/asia.200900031

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      Highly discriminating cycloaddition: An unexpected [2+2] cycloaddition in self-assembled cation OPV-monolayered vesicles is described. Remarkably, the photochemical reaction is chemo-, regio-, and stereoselective, which is most likely the result of the well-controlled supramolecular organization of the OPV units in the monolayer.

    12. Oligonucleotides

      G-Quadruplex Aptamers with Peroxidase-Like DNAzyme Functions: Which Is the Best and How Does it Work? (pages 918–922)

      Tao Li, Shaojun Dong and Erkang Wang

      Article first published online: 6 MAY 2009 | DOI: 10.1002/asia.200900019

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      Select the best: Five G-quadruplex hemin-binding aptamers are compared to determine the best candidate for DNAzyme-based sensing application. The structural model and catalytic mechanism of the hemin–G-quadruplex complex are proposed to indicate how it works in a manner similar to the peroxidase.

    13. Iron Complexes

      Nuclearity Control in Molecular Iron Phosphates through Choice of Iron Precursors and Ancillary Ligands (pages 923–935)

      Ramaswamy Murugavel, Nayanmoni Gogoi, K. G. Suresh, S. Layek and H. C. Verma

      Article first published online: 6 MAY 2009 | DOI: 10.1002/asia.200800474

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      One to five, one at a time: The choice of iron precursors and the amine co-ligand are employed as switches to control the nuclearity in iron phosphate molecular clusters. Using this control, it is possible to isolate selectively either a mono, di, tri, tetra, or pentanuclear cluster, for a given set of reactants.

    14. Metal–Organic Frameworks

      Fluorite and Mixed-Metal Kagome-Related Topologies in Metal–Organic Framework Compounds: Synthesis, Structure, and Properties (pages 936–947)

      Partha Mahata, Rajamani Raghunathan, Debamalya Banerjee, Diptiman Sen, S. Ramasesha, S. V. Bhat and S. Natarajan

      Article first published online: 13 MAY 2009 | DOI: 10.1002/asia.200800467

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      Cluster around: Fluorite and mixed-metal Kagome-related three-dimensional metal–organic framework (MOF) compounds have been prepared by the reaction between Mn2+ ions and trimellitate anions. The octameric water clusters in the former can be reversibly adsorbed and both the compounds show interesting magnetic behavior.

    15. Fluorescent Dyes

      Study of Diffusion of Organic Dyes in a Triblock Copolymer Micelle and Gel by Fluorescence Correlation Spectroscopy (pages 948–954)

      Subhadip Ghosh, Ujjwal Mandal, Aniruddha Adhikari and Kankan Bhattacharyya

      Article first published online: 6 FEB 2009 | DOI: 10.1002/asia.200800377

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      Dye-ing to get out: Fluorescence correlation spectroscopy was used to show that diffusion coefficients depend on the location of the dye molecules in a single medium. In a micelle, hydrophobic dyes remain within the micelle, whereas a hydrophilic probe occasionally diffuses out of the micelle into bulk water. In a gel, diffusion of the micelle is completely arrested and the autocorrelation arises from diffusion of the dye.

    16. Carbon Nanotubes

      Unsynchronized Diameter Changes of Double-Wall Carbon Nanotubes during Chemical Vapour Deposition Growth (pages 955–960)

      Guoqing Ning and Hisanori Shinohara

      Article first published online: 17 DEC 2008 | DOI: 10.1002/asia.200800347

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      Unsynchronized growing! Unsynchronized diameter changes of the inner and the outer tubes are observed in the double-wall carbon nanotubes (DWNTs) prepared by CoMo/MgO catalysts. The difference of the growth surroundings for the inner and outer tubes of DWNTs can consistently explain the observed unsynchronized diameter changes.

    17. Hydrogenase Models

      Dithiolate-Bridged Fe-Ni-Fe Trinuclear Complexes Consisting of Fe(CO)3−n(CN)n (n=0, 1) Components Relevant to the Active Site of [NiFe] Hydrogenase (pages 961–968)

      Satyanarayan Pal, Yasuhiro Ohki, Teppei Yoshikawa, Katsuaki Kuge and Kazuyuki Tatsumi

      Article first published online: 7 JAN 2009 | DOI: 10.1002/asia.200800434

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      Step-by-step: A trinuclear Fe-Ni-Fe complex 1 was synthesized from the reaction of [Fe(CO)4I2] with Li2[Ni(norbornane-exo-2,3-dithiolate)2]. The CO ligands in 1 were transformed into CN upon treatment with N(SiMe3)2, and the monocyanide complex 3 and the dicyanide complex 4 were obtained. Complexes 3 and 4 were found to react with protonic acids, whereas 1 is robust.

    18. Perovskites

      Structural and Magnetic Properties of Ba0.7Sr0.3Ru1−xMnxO3 Hexagonal Perovskites (pages 969–973)

      Congling Yin, Guobao Li, Jianhua Lin and J. P. Attfield

      Article first published online: 17 APR 2009 | DOI: 10.1002/asia.200800469

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      Tuning perovskites! A dramatic structural control of magnetic properties is reported in Ba0.7Sr0.3Ru1−xMnxO3 hexagonal perovskites. These are spin-glasses with freezing temperatures proportional to x in the 6H polytype up to x≈0.5, but show high temperature antiferromagnetism in 4H phases at high x.

    19. Enzyme Mimics

      Amide-Based Glutathione Peroxidase Mimics: Effect of Secondary and Tertiary Amide Substituents on Antioxidant Activity (pages 974–983)

      Krishna P. Bhabak and Govindasamy Mugesh

      Article first published online: 17 APR 2009 | DOI: 10.1002/asia.200800483

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      Sec or terts: A series of sec- and tert-amide substituted diselenides have been synthesised as synthetic mimics of glutathione peroxidase (GPx), characterized, and studied for their antioxidant activities using H2O2, Cum-OOH, and tBuOOH as substrates and PhSH as thiol co-substrate. The substitution at the free [BOND]NH group of the amide moiety in the sec-amide based diselenides is shown to enhance the GPx activity.

    20. Lithography

      Fabrication and Application of TiO2-Based Superhydrophilic–Superhydrophobic Patterns on Titanium Substrates for Offset Printing (pages 984–988)

      Kazuya Nakata, Shunsuke Nishimoto, Atsushi Kubo, Donald Tryk, Tsuyoshi Ochiai, Taketoshi Murakami and Akira Fujishima

      Article first published online: 25 MAR 2009 | DOI: 10.1002/asia.200900005

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      Light print: TiO2-based superhydrophilic–superhydrophobic patterns were fabricated on titanium substrates. The fabricated substrate functions as an offset printing plate and is renewable through initialization by UV irradiation and resurfacing. This new method offers a new, resource-saving, environmentally friendly printing method. SAM=self-assembled monolayer.

    21. Fluorescent Sensors

      Bile Acid Derived PET-Based Cation Sensors: Molecular Structure Dependence of their Sensitivity (pages 989–997)

      Uday Maitra and Suvadeep Nath

      Article first published online: 11 MAY 2009 | DOI: 10.1002/asia.200900026

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      Sensitive sensors: A general strategy of designing a PET cation sensor using Bile acids as scaffolds has been discussed. Keeping the basic molecular structure the same, different bile acid based fluoroionophores were prepared in order to achieve the highest sensitivity toward the metal ions. The dependence of sensitivity on the molecular structure has been studied.

    22. Nonlinear Optics

      Structural and Nonlinear Optical Properties of Aligned Heterotrinuclear [RuII-(Spacer)-MII-(Spacer)-RuII] Complexes (M=Pd, Pt; spacer=4-ethynylpyridine) (pages 998–1005)

      Qingchun Ge, Gulliver T. Dalton, Mark G. Humphrey, Marek Samoc and T. S. Andy Hor

      Article first published online: 11 MAY 2009 | DOI: 10.1002/asia.200900065

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      Optical alloy: “Linear” heterotrinuclear assemblies, with the metals separated by 4-ethynylpyridine spacers [RuCp(C[TRIPLE BOND]Cpy-4)(dppf)]2[MCl2] (M=Pd, Pt), have been structurally identified. They are electrochemically active and show good cubic nonlinear optical responses.

  8. Preview

    1. Top of page
    2. Cover Picture
    3. Editorial
    4. Graphical Abstract
    5. News
    6. Focus Reviews
    7. Communications
    8. Full Papers
    9. Preview
    1. Preview: Chem. Asian J. 7/2009 (page 1011)

      Article first published online: 26 MAY 2009 | DOI: 10.1002/asia.200990016

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