ChemSusChem

Cover image for Vol. 8 Issue 2

Editor-in-Chief: Guido Kemeling; Editorial Board Chairs: Matthias Beller, Gabriele Centi, Licheng Sun

Impact Factor: 7.117

ISI Journal Citation Reports © Ranking: 2013: 17/148 (Chemistry Multidisciplinary)

Online ISSN: 1864-564X

Associated Title(s): Angewandte Chemie International Edition, Chemistry - A European Journal, Chemistry – An Asian Journal, ChemCatChem, ChemElectroChem, ChemPhysChem, Energy Technology

8_02/2015Cover Picture: Dye-Sensitized Solar Cells with Improved Performance using Cone-Calix[4]Arene Based Dyes (ChemSusChem 2/2015)

The Front Cover image shows a new and efficient cone-calix[4]arene-based dye (Calix-3) with multiple donor–π–acceptor (D–π–A) moieties used in dye-sensitized solar cells (DSSCs). The conversion efficiency of Calix-3 is above 5 % under standard global 1.5 solar conditions. This compares well with a device using rod-shaped dye M-3 with a single D–π–A chain, which has an efficiency of 3.56 %. The cone-calix[4]arene-based dyes offer higher molar extinction coefficients, longer electron lifetimes, better stability, and stronger binding ability to a TiO2 film. To the best of our knowledge, this is the first example of the use of calixarene-based sensitizer in efficient dye-sensitized solar cells. More details can be found in the Full Paper by Tan and co-workers on page 280 (DOI: 10.1002/cssc.201402401), while more information about the research group is available in the Cover Profile (DOI: 10.1002/cssc.201403048).

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8_02i/2015Inside Cover: Effects of Hydrophobicity of Diffusion Layer on the Electroreduction of Biomass Derivatives in Polymer Electrolyte Membrane Reactors (ChemSusChem 2/2015)

The Inside Cover picture shows a polymer electrolyte membrane reactor device used for the electroreduction of biomass derivatives, in which the hydrophobicity of the diffusion layer (DL) greatly influences the hydrogenation performance of two model biomass derivatives. Hydrophobic carbon paper repels aqueous solutions, but highly volatile butanone can permeate in vapor form and achieve a high hydrogenation rate, whereas for nonvolatile maleic acid high mass-transfer resistance prevents hydrogenation. With a hydrophilic DL, aqueous solutions of maleic acid can permeate in liquid form and the performance reaches a similar level as that of butanone. More details can be found in the Full Paper by Chen et al. on page 288 (DOI: 10.1002/cssc.201402302).

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8_02c/2015Inside Back Cover: Synthesis of Porous Inorganic Hollow Fibers without Harmful Solvents (ChemSusChem 2/2015)

The Inside Back Cover image shows that high surface-area-to-volume ratio inorganic hollow fibers can be fabricated by a new route that completely avoids the use of harmful solvents. The approach is based on bio-ionic gelation of an aqueous mixture of inorganic particles and sodium alginate during dry-wet spinning. The route inherently avoids the manifestation of the so-called macro voids that are associated with solvent-based synthesis routes and allows the facile incorporation of additional metal oxides in the inorganic hollow fibers. More details are available in the Communication by Shukla et al. on page 251 (DOI: 10.1002/cssc.201402483).

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8_02b/2015Back Cover: Proton Conductivity of Naphthalene Sulfonate Formaldehyde Resin-Doped Mesoporous Niobium and Tantalum Oxide Composites (ChemSusChem 2/2015)

The Back Cover image shows the movement of protons along an enhanced proton-conducting pathway fabricated inside a mesoporous transition-metal oxide impregnated with naphthalene sulfonate formaldehyde resin. Ambient moisture and the sulfonate groups of the 4–6-unit oligomers bind to the Lewis acidic walls of the mesostructure, creating a channel for enhanced proton conduction at the interface. As protons enter the pores, they hop along the proximal oxygen sites, giving rise to proton conductivity values surpassing those of the Nafion standard used in the study. More details can be found in the Full Paper by Turley et al. on page 301 (DOI: 10.1002/cssc.201402546).

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