Chemistry – An Asian Journal

Cover image for Vol. 5 Issue 12

December 3, 2010

Volume 5, Issue 12

Pages 2429–2545

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. News
    5. Focus Review
    6. Communications
    7. Full Papers
    8. Preview
    1. Cover Picture: Sugar-Decorated Dendritic Nanocarriers: Encapsulation and Release of the Octahedral Rhenium Cluster Complex [Re6S8(OH)6]4− (Chem. Asian J. 12/2010) (page 2429)

      Manja Kubeil, Dr. Holger Stephan, Dr. Hans-Jürgen Pietzsch, Dr. Gerhard Geipel, Dr. Dietmar Appelhans, Prof. Dr. Brigitte Voit, Jan Hoffmann, Prof. Dr. Bernhard Brutschy, Dr. Yuri V. Mironov, Dr. Konstantin A. Brylev and Prof. Dr. Vladimir E. Fedorov

      Version of Record online: 1 DEC 2010 | DOI: 10.1002/asia.201090041

      Thumbnail image of graphical abstract

      Nanomaterials based on a dendritic structure are widely recognized as fascinating drug-delivery vehicles and, owing to their near-perfect architectures and the wide scope for structural variation, such molecules seem to be ideally suited to encapsulate drug molecules. In this context, sugar-decorated dendritic nanocontainers are of special interest. In their Full Paper on page 2507 ff., H. Stephan et al. show that glycodendrimers with dense maltose shells are capable of encapsulating and releasing nanometer-sized guest molecules in a controlled manner. Different physico-chemical methods provide strong evidence that the guest molecules are preferentially bound in the interior of the dendritic skeleton.

  2. Graphical Abstract

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. News
    5. Focus Review
    6. Communications
    7. Full Papers
    8. Preview
  3. News

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. News
    5. Focus Review
    6. Communications
    7. Full Papers
    8. Preview
  4. Focus Review

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. News
    5. Focus Review
    6. Communications
    7. Full Papers
    8. Preview
    1. Colloidal Microcapsules

      Colloidal Microcapsules: Self-Assembly of Nanoparticles at the Liquid–Liquid Interface (pages 2442–2453)

      Debabrata Patra, Prof. Amitav Sanyal and Prof. Vincent M. Rotello

      Version of Record online: 8 OCT 2010 | DOI: 10.1002/asia.201000301

      Thumbnail image of graphical abstract

      Colloids encapsulated: Self-organization of nanoparticles at the liquid–liquid interface offers an elegant approach to the creation of 2D assemblies at multiple length scales. Chemical interactions between nanoparticles play a major role in stabilizing the assembly process, and prevent thermal escape from the interface. This Review highlights various fabrication strategies, including surface modification of nanoparticles and the tuning of interparticle interactions to create robust colloidal microcapsules.

  5. Communications

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. News
    5. Focus Review
    6. Communications
    7. Full Papers
    8. Preview
    1. Metallacrown Ethers

      Chiral Metallacrown Ethers for Asymmetric Hydrogenation: Alkali-Metal Ion Mediated Enhancement of Enantioselectivity (pages 2454–2458)

      Yong Li, Baode Ma, Yanmei He, Feng Zhang and Prof. Dr. Qing-Hua Fan

      Version of Record online: 29 OCT 2010 | DOI: 10.1002/asia.201000593

      Thumbnail image of graphical abstract

      Metal-ion tuning: A new kind of chiral bisphosphite-containing metallacrown ether catalyst (see scheme) was prepared through a template-induced strategy and was successfully applied in the asymmetric hydrogenation of α-dehydroamino acid esters. The alkali-metal ions were found to be able to effectively tune the enantioselectivity and a 17 % enhancement of ee value was observed in a favorable case.

    2. Cross-Coupling

      Rapid Assembly of Resorcylic Acid Lactone Frameworks through Sequential Palladium-Catalyzed Coupling Reactions (pages 2459–2462)

      Dr. Shinichiro Fuse, Sakae Sugiyama and Prof. Dr. Takashi Takahashi

      Version of Record online: 24 SEP 2010 | DOI: 10.1002/asia.201000534

      Thumbnail image of graphical abstract

      Just three steps! The highly efficient synthesis of 15 analogues of resorcylic acid lactones has been achieved through sequential palladium-catalyzed coupling reactions based on the aromatic scaffolds and ring-closing metathesis reactions.

    3. Colorimetric Sensors

      Selective Colorimetric Sensor for Hg2+ Ions Using a Mixture of Thiourea Derivatives and Gold Nanoparticles Stabilized with Adenosine Triphosphate (pages 2463–2466)

      Sudeok Kim, Na Hee Lee, Seong Hyeok Seo, Min Sik Eom, Prof. Dr. Sangdoo Ahn and Prof. Dr. Min Su Han

      Version of Record online: 8 OCT 2010 | DOI: 10.1002/asia.201000483

      Thumbnail image of graphical abstract

      The mercury prize: A highly selective and sensitive unmodified gold-nanoparticle (AuNP)-based colorimetric sensor for Hg2+ ions in aqueous media uses the Hg2+-promoted desulfurization reaction of a thiourea derivative and the reactivity of a thiourea derivative to gold nanoparticles. This sensor also allows a quantitative assay of the analyte in a neutral aqueous solution, down to a concentration of 10−7M.

  6. Full Papers

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

      Cucurbit[7]uril as a Tool in the Green Synthesis of Gold Nanoparticles (pages 2468–2476)

      Dr. Thathan Premkumar and Prof. Dr. Kurt E. Geckeler

      Version of Record online: 16 SEP 2010 | DOI: 10.1002/asia.201000338

      Thumbnail image of graphical abstract

      Golden balls: A simple, straightforward, one-pot synthesis of gold nanoparticles (AuNPs) is reported from the reaction of an aqueous mixture of KAuCl4 and the macrocycle cucurbit[7]uril in the presence of NaOH (see picture). The AuNPs have been shown to be catalytically active. Surprisingly, the macrocycle can play a dual role in the synthesis of AuNPs: as a reducing agent as well as being a protecting agent.

    2. Nanomaterials

      Flower-Like Hierarchically Nanostructured Hydroxyapatite Hollow Spheres: Facile Preparation and Application in Anticancer Drug Cellular Delivery (pages 2477–2482)

      Ke-Wei Wang, Prof. Dr. Ying-Jie Zhu, Xiao-Yan Chen, Wan-Yin Zhai, Qi Wang, Feng Chen, Prof. Dr. Jiang Chang and Prof. Dr. You-Rong Duan

      Version of Record online: 23 SEP 2010 | DOI: 10.1002/asia.201000463

      Thumbnail image of graphical abstract

      Nanotransporters: A facile microwave-assisted strategy has been developed for the fabrication of nanostructured hollow microspheres of hydroxyapatite assembled with nanosheets, which are explored as mitoxantrone (MIT) carriers and can deliver MIT into human breast cancer cells efficiently.

    3. Organic Photovoltaics

      Alternating and Diblock Donor–Acceptor Conjugated Polymers Based on Diindeno[1,2-b:2′,1′-d]thiophene Structure: Synthesis, Characterization, and Photovoltaic Applications (pages 2483–2492)

      Chiu-Hsiang Chen, Prof. Dr. Yen-Ju Cheng, Dr. Martin Dubosc, Chao-Hsiang Hsieh, Dr. Cheng-Che Chu and Prof. Dr. Chain-Shu Hsu

      Version of Record online: 8 OCT 2010 | DOI: 10.1002/asia.201000506

      Thumbnail image of graphical abstract

      Don′t spare the rod! A series of conjugated polymers containing the pentacyclic diindeno[1,2-b:2′,1′-d]thiophene unit was synthesized (see figure) and utilized as efficient photoactive p-type materials for organic photovoltaic devices. The arrangement of donor and acceptor units in the polymer backbone plays an important role in determining the molecular properties and device performance.

    4. Nanostructures

      Controlled Aqueous Solution Synthesis of Platinum–Palladium Alloy Nanodendrites with Various Compositions Using Amphiphilic Triblock Copolymers (pages 2493–2498)

      Dr. Liang Wang and Prof. Dr. Yusuke Yamauchi

      Version of Record online: 17 SEP 2010 | DOI: 10.1002/asia.201000496

      Thumbnail image of graphical abstract

      A simple strategy: A very simple, one-step, and efficient route is proposed to directly produce dendritic Pt–Pd alloy nanoparticles with high surface area in high yield. By simply changing the compositional ratios of the Pt and Pd sources in the precursor solutions, Pt–Pd nanodendrites with various compositions can be easily produced (see scheme).

    5. Semiconductors

      Synthesis and Enhanced Photocatalytic Activity of a Hierarchical Porous Flowerlike p–n Junction NiO/TiO2 Photocatalyst (pages 2499–2506)

      Prof. Jiaguo Yu, Dr. Wenguang Wang and Dr. Bei Cheng

      Version of Record online: 12 OCT 2010 | DOI: 10.1002/asia.201000550

      Thumbnail image of graphical abstract

      Flowerlike junctions! A hierarchical flowerlike pn junction NiO/TiO2 photocatalyst is prepared by a two-step method. The photocatalyst shows enhanced photocatalytic activity and the ease with which it can be re-used after the photochemical reaction indicates that it can be regarded as an attractive photocatalyst for large-scale environmental purification.

    6. Nanomaterials

      Sugar-Decorated Dendritic Nanocarriers: Encapsulation and Release of the Octahedral Rhenium Cluster Complex [Re6S8(OH)6]4− (pages 2507–2514)

      Manja Kubeil, Dr. Holger Stephan, Dr. Hans-Jürgen Pietzsch, Dr. Gerhard Geipel, Dr. Dietmar Appelhans, Prof. Dr. Brigitte Voit, Jan Hoffmann, Prof. Dr. Bernhard Brutschy, Dr. Yuri V. Mironov, Dr. Konstantin A. Brylev and Prof. Dr. Vladimir E. Fedorov

      Version of Record online: 2 AUG 2010 | DOI: 10.1002/asia.201000284

      Thumbnail image of graphical abstract

      Catch and release! The encapsulation and release of nanometer-sized anionic rhenium cluster complexes in biocompatible maltose-decorated dendrimers have been studied in detail through the application of different physico-chemical methods. The determined properties suggest the possibility for the development of the next generation of dendritic nanocarriers with specific targeting of destined tissue for therapeutic treatments.

    7. C-oriented and {010} Facets Exposed BiVO4 Nanowall Films: Template-Free Fabrication and their Enhanced Photoelectrochemical Properties (pages 2515–2523)

      Dr. Min Zhou, Shudong Zhang, Yongfu Sun, Changzheng Wu, Prof. Dr. Mingtai Wang and Prof. Dr. Yi Xie

      Version of Record online: 23 SEP 2010 | DOI: 10.1002/asia.201000452

      Thumbnail image of graphical abstract

      Epitaxial nanowall film: An epitaxial strategy has been developed to grow monoclinic BiVO4 nanowall films on indium tin oxide (ITO) glass. Owing to the c-orientation and exposure of highly active {010} facets, the nanowall films exhibit an excellent photoelectrochemical response, especially under a low-intensity light source (see figure).

    8. Polymers

      A Water-Soluble Conjugated Polymer for Protein Identification and Denaturation Detection (pages 2524–2529)

      Qingling Xu, Chunxian Wu, Chunlei Zhu, Xinrui Duan, Prof. Libing Liu, Dr. Yuchun Han, Prof. Yilin Wang and Prof. Shu Wang

      Version of Record online: 30 SEP 2010 | DOI: 10.1002/asia.201000363

      Thumbnail image of graphical abstract

      Detection made easy: A new cationic water-soluble conjugated polymer containing fluorene and diene moieties in the backbone has been synthesized. It provides promising applications on protein identification and denaturation detection in a simple, fast, and label-free manner based on non-specific interaction-induced perturbation of the polymer fluorescence response with linear discriminant analysis analysis.

    9. Hydrolysis

      Phosphine and Thiophene Cyclopalladated Complexes: Hydrolysis Reactions in Strong Acidic Media (pages 2530–2540)

      Prof. Dr. Begoña García, Dr. Francisco J. Hoyuelos, Dr. Saturnino Ibeas, Dr. María S. Muñoz, Dr. Ana M. Navarro, Dr. Indalecio A. Peñacoba and Prof. Dr. José M. Leal

      Version of Record online: 1 DEC 2010 | DOI: 10.1002/asia.201000526

      Thumbnail image of graphical abstract

      In-X-cess: The acid hydrolysis of the organopalladium complexes [Pd(CNN)R]+ occurs in high acidity regions, outside the pH scale. The experimental measurements matched with two consecutive reaction schemes for any sulphuric acid concentration. In the lower-acidity region, the mechanism depends on the nature of the ligand R, but it is independent of R in the higher-acidity region (see scheme). CNN=2-acetylpyridinephenylhydrazone.

  7. Preview

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. News
    5. Focus Review
    6. Communications
    7. Full Papers
    8. Preview
    1. You have free access to this content
      Preview: Chem. Asian J. 1/2011 (page 2545)

      Version of Record online: 1 DEC 2010 | DOI: 10.1002/asia.201090044

SEARCH

SEARCH BY CITATION