ChemPlusChem

Cover image for Vol. 79 Issue 8

August 2014

Volume 79, Issue 8

Pages 1065–1233

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Cover Profile
    4. Graphical Abstract
    5. News
    6. Masthead
    7. Communications
    8. Full Papers
    1. You have free access to this content
      Cover Picture: Spectroscopic and Computational Characterizations of Alkaline-Earth- and Heavy-Metal-Exchanged Natrolites (ChemPlusChem 8/2014) (page 1065)

      Dr. Dan Liu, Dr. Xin Chen, Prof. Yanming Ma, Dr. Zhenxian Liu, Prof. Thomas Vogt and Prof. Yongjae Lee

      Version of Record online: 18 JUL 2014 | DOI: 10.1002/cplu.201402164

      Thumbnail image of graphical abstract

      The cover picture shows the natrolite framework of a small-pore zeolite made up of alternating SiO4 and AlO4 tetrahedral 4-rings and helical 8-rings, which can contain, via cooperative rotation of the 4-rings and subsequent modification of the 8-ring opening, monovalent alkali metals Li+, Na+, K+, Rb+ and Cs+, divalent alkaline-earth ions Ca2+, Sr2+ and Ba2+ as well as heavy metals like Cd2+, Pb2+ and Ag+ as charge-balancing extra-framework cations (EFC). In their Full Paper on on page 1096 ff., Y. Lee and co-workers report that the vibrational frequencies of both 4- and helical 8-ring units scale with the size of the EFC and that the frequency of the H[BOND]O[BOND]H bending and O[BOND]H stretching modes of water contained within the pores are dependent on the orientations of the water molecules along the natrolite channel. Deviations from these correlations in mixed EFC natrolites could hint at new structures owing to size-driven phase separations.

  2. Cover Profile

    1. Top of page
    2. Cover Picture
    3. Cover Profile
    4. Graphical Abstract
    5. News
    6. Masthead
    7. Communications
    8. Full Papers
    1. You have free access to this content
      Spectroscopic and Computational Characterizations of Alkaline-Earth- and Heavy-Metal-Exchanged Natrolites (page 1066)

      Dr. Dan Liu, Dr. Xin Chen, Prof. Yanming Ma, Dr. Zhenxian Liu, Prof. Thomas Vogt and Prof. Yongjae Lee

      Version of Record online: 23 JUL 2014 | DOI: 10.1002/cplu.201402166

      Thumbnail image of graphical abstract

      the collaboration between the four research groups has linked the established systematic structural variations of ion-exchanged natrolites to their spectroscopic signatures so as to enable structural predictions ” This and more about the story behind the cover in the Cover Profile and about the research itself on page 1096.

  3. Graphical Abstract

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

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

    1. Top of page
    2. Cover Picture
    3. Cover Profile
    4. Graphical Abstract
    5. News
    6. Masthead
    7. Communications
    8. Full Papers
    1. Masthead: ChemPlusChem 8/2014 (page 1079)

      Version of Record online: 12 AUG 2014 | DOI: 10.1002/cplu.201490024

  6. Communications

    1. Top of page
    2. Cover Picture
    3. Cover Profile
    4. Graphical Abstract
    5. News
    6. Masthead
    7. Communications
    8. Full Papers
    1. Tuning Photoluminescence Emission of a Cadmium–Organic Framework by Excitation (pages 1080–1082)

      Lin Wang, Dr. E Yang, Dr. Huabin Zhang and Prof. Jian Zhang

      Version of Record online: 30 MAY 2014 | DOI: 10.1002/cplu.201402027

      Thumbnail image of graphical abstract

      Linked emissions: A 3D coordination polymer with primitive cubic topology exhibits interesting tunable photoluminescent emission based on variation of the excitation light at room temperature (see picture).

    2. In Vivo Processing of Ceria Nanoparticles inside Liver: Impact on Free-Radical Scavenging Activity and Oxidative Stress (pages 1083–1088)

      Dr. Uschi M. Graham, Dr. Michael T. Tseng, Dr. Jacek B. Jasinski, Prof. Dr. Robert A. Yokel, Dr. Jason M. Unrine, Dr. Burtron H. Davis, Dr. Alan K. Dozier, Dr. Sarita S. Hardas, Dr. Rukhsana Sultana, Prof. Dr. Eric A. Grulke and Prof. Dr. D. Allan Butterfield

      Version of Record online: 6 JUN 2014 | DOI: 10.1002/cplu.201402080

      Thumbnail image of graphical abstract

      Liver detox: Ceria nanoparticles after ninety days inside the liver undergo in vivo processing that causes a shift towards smaller particle size and an increased reactive surface area with enhanced Ce3+ activity that leads to greater free-radical scavenging potential of the ultrafines (see figure). This is the first record showing that ceria undergoes partial dissolution inside the liver. Breakdown and redistribution could be a step towards improving ceria biocompatibility in vivo.

    3. Enhanced Wave-Absorption Properties of Nanocomposites Based on the Synthesized Bi2S3 Nanorods and Polyvinylidene Fluoride (pages 1089–1095)

      Xin Luo, Dr. Guang-Sheng Wang, Hao-Yue Guo, Xiao-Juan Zhang, Wen-Qiang Cao, Yun-Zhao Wei, Prof. Lin Guo and Prof. Mao-Sheng Cao

      Version of Record online: 14 MAY 2014 | DOI: 10.1002/cplu.201402050

      Thumbnail image of graphical abstract

      Catching waves: Wave-absorption properties were studied by comparison of Bi2S3/paraffin and Bi2S3/polyvinylidene fluoride (PVDF) nanocomposites with the same filler loadings (see figure). The results confirmed that the introduction of Bi2S3 nanorods to PVDF can significantly enhance the wave-absorption properties. The Bi2S3/PVDF nanocomposites with relatively lower loadings (10 wt %) were found to possess better performance of maximum absorption (−32 dB at 10.7 GHz).

  7. Full Papers

    1. Top of page
    2. Cover Picture
    3. Cover Profile
    4. Graphical Abstract
    5. News
    6. Masthead
    7. Communications
    8. Full Papers
    1. Spectroscopic and Computational Characterizations of Alkaline-Earth- and Heavy-Metal-Exchanged Natrolites (pages 1096–1102)

      Dr. Dan Liu, Dr. Xin Chen, Prof. Yanming Ma, Dr. Zhenxian Liu, Prof. Thomas Vogt and Prof. Yongjae Lee

      Version of Record online: 17 JUN 2014 | DOI: 10.1002/cplu.201402114

      Thumbnail image of graphical abstract

      Host–guest interactions: Synchrotron IR and micro-Raman spectroscopy establish a correlation between the frequency redshifts of framework building units and the size of extra-framework cations in small-pore natrolites (see figure). Ab initio calculations show that frequency shifts in the H[BOND]O[BOND]H bending mode and differences in O[BOND]H stretching vibration modes are correlated with the water molecule orientations along the natrolite channel.

    2. Metal–Organic Framework Co(D-Cam)1/2(bdc)1/2(tmdpy) for Improved Enantioseparations on a Chiral Cyclodextrin Stationary Phase in Gas Chromatography (pages 1103–1108)

      Hong Liu, Sheng-Ming Xie, Prof. Ping Ai, Dr. Jun-Hui Zhang, Dr. Mei Zhang and Prof. Li-Ming Yuan

      Version of Record online: 6 MAY 2014 | DOI: 10.1002/cplu.201402067

      Thumbnail image of graphical abstract

      Increase the gap! The incorporation of peramylated β-cyclodextrins into the metal–organic framework Co(D-Cam)1/2 (bdc)1/2(tmdpy) (D-Cam=D-camphoric acid, bdc=1,4-benzenedicarboxylic acid, tmdpy=4,4′-trimethylenedipyridine) enhances the gas chromatographic separation of small molecules with high column efficiency and good reproducibility (see picture).

    3. Fabrication of Surface-Patterned Membranes by Means of a ZnO Nanorod Templating Method for Polymer Electrolyte Membrane Fuel-Cell Applications (pages 1109–1115)

      Won Seok Chi, Yukwon Jeon, Se Jun Park, Prof. Jong Hak Kim and Prof. Yong-Gun Shul

      Version of Record online: 21 MAY 2014 | DOI: 10.1002/cplu.201402083

      Thumbnail image of graphical abstract

      On the surface of things: Surface-patterned Nafion films were prepared by using different types of ZnO nanorods as templates for polymer electrolyte membrane fuel-cell applications. The surface-tuned structure of the films improved fuel-cell performance owing to effective Pt loading on the membranes through an enhancement in surface area (see figure).

    4. Controlling the Surface Chemistry of Multiwalled Carbon Nanotubes for the Production of Highly Efficient and Stable Laccase-Based Biocatalysts (pages 1116–1122)

      Dr. Cláudia G. Silva, Dr. Ana P. M. Tavares, Prof. Goran Dražić, Dr. Adrián M. T. Silva, Prof. José M. Loureiro and Prof. Joaquim L. Faria

      Version of Record online: 20 MAY 2014 | DOI: 10.1002/cplu.201402054

      Thumbnail image of graphical abstract

      When defects become good: Controlled introduction of surface oxygen groups on multiwalled carbon nanotubes is fundamental for improved laccase immobilization, catalytic activity, and thermal stability of the hybrid biocatalyst (see figure). The main driving forces involved in the immobilization process are hydrophobic and electrostatic/hydrogen-bonding interactions for the pristine and functionalized carbon nanotubes, respectively.

    5. Highly Active PtAu Nanowire Networks for Formic Acid Oxidation (pages 1123–1128)

      Meiling Xiao, Songtao Li, Jianbing Zhu, Kui Li, Prof. Dr. Changpeng Liu and Prof. Dr. Wei Xing

      Version of Record online: 20 MAY 2014 | DOI: 10.1002/cplu.201402061

      Thumbnail image of graphical abstract

      On a wire: A facile one-pot route has been developed for the synthesis of composition-controllable PtAu nanowire networks, which demonstrate enhanced electrocatalytic activity and selectivity for formic acid oxidation (see figure).

    6. Direct Oxidative Amidation between N,N-dimethylanilines and Anhydrides Using Metal-Organic Framework [Cu2(EDB)2(BPY)] as an Efficient Heterogeneous Catalyst (pages 1129–1137)

      Giao H. Dang, Thanh D. Nguyen, Dung T. Le, Thanh Truong and Nam T. S. Phan

      Version of Record online: 20 MAY 2014 | DOI: 10.1002/cplu.201402090

      Thumbnail image of graphical abstract

      Direct is best: The first heterogeneous catalytic system for direct amidation of anhydrides using N,N-dimethylanilines has been developed where the desired products were formed in good to excellent yields (see scheme). Facile catalyst separation and reusability along with application on a large scale allow the method to be economically practical for making tertiary amide compounds.

    7. Enantioselective Henry and Aza-Henry Reaction in the Synthesis of (R)-Tembamide Using Efficient, Recyclable Polymeric CuII Complexes as Catalyst (pages 1138–1146)

      Anjan Das, Manoj K. Choudhary, Dr. Rukhsana I. Kureshy, Tamal Roy, Dr. Noor-ul H. Khan, Dr. Sayed H. R. Abdi and Dr. Hari C. Bajaj

      Version of Record online: 21 MAY 2014 | DOI: 10.1002/cplu.201402078

      Thumbnail image of graphical abstract

      Henry the eighth: Chiral polymeric CuII-[H4]salen (salen=bis[(salicylidene)ethylenediaminato]) complexes are efficient catalysts in the asymmetric Henry and aza-Henry reaction of various aromatic and aliphatic aldehydes and N-tosylimines in the presence of nitroalkanes, with very low catalyst loading (see figure). Upon recycling the catalyst, the yield, enantiomeric excess (ee), and diastereomeric excess (de) were unchanged for up to eight cycles.

    8. Synthesis of Sulfonic Acid Containing Ionic-Liquid-Based Periodic Mesoporous Organosilica and Study of Its Catalytic Performance in the Esterification of Carboxylic Acids (pages 1147–1152)

      Dr. Dawood Elhamifar, Prof. Dr. Babak Karimi, Abbas Moradi and Javad Rastegar

      Version of Record online: 9 MAY 2014 | DOI: 10.1002/cplu.201402071

      Thumbnail image of graphical abstract

      Increased functionality: The preparation of a new sulfonic acid containing ionic-liquid-based periodic mesoporous organosilica (PMO-IL-SO3H, see picture), as well as its catalytic applications for the esterification of carboxylic acids with primary and secondary alcohols under solvent-free conditions is described.

    9. Grafting Transition Metal–Organic Fragments onto W/Ta Mixed-Addendum Nanoclusters for Broad-Spectrum-Driven Photocatalysis (pages 1153–1158)

      Tian-Zhan Zhang, Dr. Shuang Yao, Dr. Zhi-Ming Zhang, Ying Lu, Prof. Yang-Guang Li and Prof. En-Bo Wang

      Version of Record online: 18 MAY 2014 | DOI: 10.1002/cplu.201402094

      Thumbnail image of graphical abstract

      Hard graft: Transition metal (TM)–organic fragments grafted on W/Ta mixed-addendum nanoclusters have resulted in the first TM-containing polytantalotungstates. The obtained materials can harvest a wide spectrum of solar light, from UV to near-infrared (NIR) wavelength. Photocatalytic studies have revealed their water splitting activity (see figure; DCP=dichlorophenol).

    10. Influence of the Amount of Hydrogen Fluoride on the Formation of (001)-Faceted Titanium Dioxide Nanosheets and Their Photocatalytic Hydrogen Generation Performance (pages 1159–1166)

      Dr. Yuliang Zhang, Dr. Mingwei Shang, Yifan Mi, Ting Xia, Petra Wallenmeyer, Prof. Dr. James Murowchick, Prof. Dr. Lifeng Dong, Prof. Dr. Qiao Zhang and Prof. Xiaobo Chen

      Version of Record online: 21 MAY 2014 | DOI: 10.1002/cplu.201402036

      Thumbnail image of graphical abstract

      Minor adjustments; major changes: The amount of HF added to the hydrothermal reaction of titanium butoxide plays a key role in the formation and photocatalytic activity of TiO2 nanosheets (see picture). A low amount of HF leads to small TiO2 nanoparticles, whereas a high amount of HF leads to a preference for large TiOF2 particles.

    11. Pt[BOND]M/Ba/Al2O3[BOND]Ce0.6Zr0.4O2: Influence of Synergetic Interactions between Transition Metal and Platinum on NOx Storage and Reduction (pages 1167–1175)

      Zhilin Chen, Xiuyun Wang and Prof. Ruihu Wang

      Version of Record online: 27 MAY 2014 | DOI: 10.1002/cplu.201402066

      Thumbnail image of graphical abstract

      Not so precious: Platinum-based NOx storage and reduction (NSR) catalysts containing transition metal (Mn, Fe, or Co) have been prepared by using alumina–ceria–zirconia (ACZ) as a support. The strong interaction between Pt and transition metal induces a clear effect on NSR performance. The 0.5 wt % Pt[BOND]Co/Ba/ACZ shows higher NOx storage capacity (NSC) than 1.0 wt % Pt/Ba/ACZ (see figure), and Co addition allows Pt replacement in NSR catalysts.

    12. Hexaphenyl-p-xylene: A Rigid Pseudo-Octahedral Core at the Service of Three-Dimensional Porous Frameworks (pages 1176–1182)

      Alexandra Schade, Laure Monnereau, Dr. Thierry Muller and Prof. Dr. Stefan Bräse

      Version of Record online: 28 MAY 2014 | DOI: 10.1002/cplu.201402093

      Thumbnail image of graphical abstract

      At your service: Three-dimensional hyper-cross-linked polymers (HCPs) were synthesised starting from a pseudo-octahedral building block. Adsorption measurements reveal that the copper-catalysed Huisgen 1,3-dipolar cycloaddition (CuAAC) reaction between the pseudo-octahedral core and a Td symmetrical cross-linker yield the highest values for nitrogen uptake under mild conditions at low pressure (see figure).

    13. Catalytic Performance of Vanadium MIL-47 and Linker-Substituted Variants in the Oxidation of Cyclohexene: A Combined Theoretical and Experimental Approach (pages 1183–1197)

      Dr. Matthias Vandichel, Dr. Shyam Biswas, Dr. Karen Leus, Dr. Joachim Paier, Prof. Joachim Sauer, Prof. Toon Verstraelen, Prof. Pascal Van Der Voort, Prof. Michel Waroquier and Prof. Veronique Van Speybroeck

      Version of Record online: 17 JUN 2014 | DOI: 10.1002/cplu.201402007

      Thumbnail image of graphical abstract

      A framework for catalysis: The epoxidation of cyclohexene has been studied on functionalized versions of the metal–organic framework MIL-47 containing V+IV sites. All the investigated substituted MIL-47-X frameworks (X=NH2, CH3, F, Cl, Br, OH; see figure) led to an increased conversion to cyclohexene oxide. A linear free-energy relationship was found between centers.

    14. Application of Transition-Metal Complexes in Cyclohexane Oxidation: Synthesis, Structure, and Properties of Copper and Nickel Complexes with a Pincer N-Heterocyclic Ligand (pages 1198–1207)

      Dr. Na Xing, Li Ting Xu, Xin Liu, Qiong Wu, Xi Tong Ma and Prof. Yong Heng Xing

      Version of Record online: 10 JUN 2014 | DOI: 10.1002/cplu.201402051

      Thumbnail image of graphical abstract

      Acid powered! Four new catalysts, [CuCl2(H2L)] (1), [Ni(HL)2]4 CH3CH2OH (2), [Cu(H2L)(dipic)]0.5 glycol2 H2O (3), and [Ni(H2L)(dipic)]0.5 glycol2 H2O (4) (H2L=2, 6-di-(5-methyl-1H-pyrazol-3-yl)pyridine, H2dipic=2,6-pyridinedicarboxylic acid; see picture), for the oxidation of cyclohexane are described.

    15. Selective Binding of Amino Acids on Europium-Substituted Polyoxometalates and the Interaction-Induced Luminescent Enhancement Effect (pages 1208–1213)

      Dr. Hong-Wei Li, Dr. Yizhan Wang, Teng Zhang, Prof. Dr. Yuqing Wu and Prof. Dr. Lixin Wu

      Version of Record online: 28 MAY 2014 | DOI: 10.1002/cplu.201402091

      Thumbnail image of graphical abstract

      Caught fast: Highly selective binding of basic amino acids lysine (Lys; see picture), arginine (Arg), and histidine by a europium-substituted polyoxometalate (K13[Eu(SiW10MoO39)2]28 H2O) and the induced emission-enhancement are reported. The mechanism is attributed to electrostatic interactions and hydrogen bonds between the amino acids and negative charges of the polyoxometalate.

    16. Metal Coordination and Isomerization of a Hydrazone Switch (pages 1214–1224)

      Molly L. Croteau, Dr. Xin Su, Dr. Dean E. Wilcox and Dr. Ivan Aprahamian

      Version of Record online: 17 JUL 2014 | DOI: 10.1002/cplu.201402134

      Thumbnail image of graphical abstract

      So many options! The interaction between a hydrazone-based switch and a Lewis acid can lead to coordination, followed by redistribution of metal and ligand, and isomerization. Based on isothermal titration calorimetry (ITC) and UV/Vis titration data, the nature of the Lewis acid and its counterion determine which, if any, of these processes takes place (see picture).

    17. You have full text access to this OnlineOpen article
      Keeping Nanoparticles Fully Functional: Long-Term Storage and Alteration of Magnetite (pages 1225–1233)

      Marc Widdrat, Monika Kumari, Éva Tompa, Mihály Pósfai, Ann M. Hirt and Dr. Damien Faivre

      Version of Record online: 17 JUL 2014 | DOI: 10.1002/cplu.201402032

      Thumbnail image of graphical abstract

      Keep it cool: The alteration of magnetite nanoparticles has been studied as a function of their storage conditions. Lower oxidation was measured if the particles were kept in a freezer. In this case, the magnetic properties are altered only to a minor extent (see figure).

SEARCH

SEARCH BY CITATION