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ChemistryOpen

Cover image for Vol. 2 Issue 4

August 2013

Volume 2, Issue 4

Pages 125–163

  1. Cover Picture

    1. Top of page
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    3. Cover Profile
    4. Graphical Abstract
    5. Masthead
    6. News
    7. Communications
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      Cover Picture: Metastable β-Bi2O3 Nanoparticles with Potential for Photocatalytic Water Purification Using Visible Light Irradiation (ChemistryOpen 4/2013) (page 125)

      Dr. Maik Schlesinger, Marcus Weber, Dr. Steffen Schulze, Prof. Dr. Michael Hietschold and Prof. Dr. Michael Mehring

      Article first published online: 26 AUG 2013 | DOI: 10.1002/open.201390015

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      The cover picture shows the degradation of the model dye rhodamine B (RhB) in water using β-Bi2O3 nanoparticles as photocatalyst, which was prepared from preorganized bismuth oxido clusters. In the background, a homemade photoreactor for in situ studies is shown, including the decolorizing process of the aqueous RhB solution as observed during visible light irradiation. The catalytic cycle shows crucial steps in RhB degradation at the surface of β-Bi2O3 nanoparticles (balls), which can be recycled. After adsorption of RhB at the surface of β-Bi2O3 nanoparticles, the color of the nanoparticles changes from orange to violet. The degradation process (represented by Pac-Man) is induced by irradiation with visible light, resulting in a complete decolorization of the solution as well as the surface of the β-Bi2O3 nanoparticles, indicating a fast de-ethylation process. The latter process is faster than desorption of partially degraded RhB species from the β-Bi2O3 surface, but is demonstrated to occur upon irradiation of RhB-loaded β-Bi2O3 in the solid state. For more details, see the Full Paper by Michael Mehring et al., on p. 146 ff.

  2. Cover Profile

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      Metastable β-Bi2O3 Nanoparticles with Potential for Photocatalytic Water Purification Using Visible Light Irradiation (page 126)

      Dr. Maik Schlesinger, Marcus Weber, Dr. Steffen Schulze, Prof. Dr. Michael Hietschold and Prof. Dr. Michael Mehring

      Article first published online: 21 AUG 2013 | DOI: 10.1002/open.201300032

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      “Water, the most important resource worldwide, is becoming more and more contaminated by chemical products, but established water purification processes are not exhaustively accessible. There is a strong need to develop cheap, efficient and decentralized water purification processes that make use of alternative energy sources.” More about the story behind the cover research can be found on p. 146.

  3. Graphical Abstract

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      Graphical Abstract: ChemistryOpen 4/2013 (pages 127–130)

      Article first published online: 26 AUG 2013 | DOI: 10.1002/open.201390016

  4. Masthead

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      Masthead: ChemistryOpen 4/2013 (page 128)

      Article first published online: 26 AUG 2013 | DOI: 10.1002/open.201390017

  5. News

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  6. Communications

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    1. You have full text access to this OnlineOpen article
      Photochemically Active Fluorophore–DNA/RNA Conjugates for Cellular Imaging of Nucleic Acids by Readout in Electron Microscopy (pages 136–140)

      Dr. Carolin Holzhauser, Dr. Sabrina Kracher, Dr. Moritz M. Rubner, Dr. Wolfgang Schmucker, Prof. Dr. Hans-Achim Wagenknecht and Prof. Dr. Ralph Witzgall

      Article first published online: 21 JUN 2013 | DOI: 10.1002/open.201300017

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      A two-way street: The photochemically active chromophore–nucleic acid conjugates presented herein allow not only imaging by fluorescence microscopy but additionally are able to photoinduce 3,3′-diaminobenzidine (DAB) polymerization for staining to enable additional readout with electron microscopy.

    2. You have full text access to this OnlineOpen article
      Rapid Microfluidic Immunoassays of Cancer Biomarker Proteins Using Disposable Inkjet-Printed Gold Nanoparticle Arrays (pages 141–145)

      Colleen E. Krause, Brunah A. Otieno, Dr. Alina Latus, Dr. Ronaldo C. Faria, Dr. Vyomesh Patel, Dr. J. Silvio Gutkind and Dr. James F. Rusling

      Article first published online: 12 JUN 2013 | DOI: 10.1002/open.201300018

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      Off-line amplification: A low-cost inkjet-printed gold nanoparticle immunoarray was integrated into a microfluidic device for multiple protein determinations. The use of heavily labeled magnetic beads allows optimization either for ultrasensitive detection of biomarker proteins (low fg mL−1 levels) or for rapid 8 min assays within clinically relevant detection ranges.

  7. Full Papers

    1. Top of page
    2. Cover Picture
    3. Cover Profile
    4. Graphical Abstract
    5. Masthead
    6. News
    7. Communications
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    1. You have full text access to this OnlineOpen article
      Metastable β-Bi2O3 Nanoparticles with Potential for Photocatalytic Water Purification Using Visible Light Irradiation (pages 146–155)

      Dr. Maik Schlesinger, Marcus Weber, Dr. Steffen Schulze, Prof. Dr. Michael Hietschold and Prof. Dr. Michael Mehring

      Article first published online: 2 JUL 2013 | DOI: 10.1002/open.201300013

      Thumbnail image of graphical abstract

      Water purification with β-Bi2O3: A straightforward synthetic procedure for the synthesis of β-Bi2O3 nanoparticles that offers the potential for gram-scale production is presented. The β-Bi2O3 nanoparticles show high photocatalytic activity and stability in the degradation of typical organic water pollutants under visible light irradiation. These nanoparticles might be promising materials for use in novel water purification systems.

    2. You have full text access to this OnlineOpen article
      Synthesis of the Tolerance-Inducing Oligosaccharide Lacto-N-Fucopentaose III Bearing an Activated Linker (pages 156–163)

      Junfeng Zhang, Lu Zou and Todd L. Lowary

      Article first published online: 11 JUL 2013 | DOI: 10.1002/open.201300024

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      (Synthetic) route to tolerance: A concise synthetic route to a tolerance- inducing immunomodulatory pentasaccharide, lacto-N-fucopentaose III, and its corresponding human serum albumin conjugate is described. Key transformations include two highly regio- and stereoselective glycosylations, a Birch reduction, and a UV-promoted radical addition of a thiol to an alkene.

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