ChemPhysChem

Cover image for ChemPhysChem

April 4, 2008

Volume 9, Issue 5

Pages 653–806

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. Corrigendum
    5. News
    6. Review
    7. Communications
    8. Articles
    9. Book Reviews
    10. Preview
    1. Cover Picture: Organelle Tracking in a Living Cell with Microsecond Time Resolution and Nanometer Spatial Precision (ChemPhysChem 5/2008) (page 653)

      Xiaolin Nan, Peter A. Sims and X. Sunney Xie

      Version of Record online: 27 MAR 2008 | DOI: 10.1002/cphc.200890017

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      The cover picture illustrates the tracking of organelles driven by molecular motors in a living cell with microsecond time resolution and nanometer spatial precision. In their article S. X. Xie et al. (page 707) show that by imaging the strongly scattered light from endocytosed gold nanoparticles (GNPs), individual steps of kinesin and dynein—the molecular motors transporting organelles along microtubules—can be resolved.

  2. Graphical Abstract

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. Corrigendum
    5. News
    6. Review
    7. Communications
    8. Articles
    9. Book Reviews
    10. Preview
  3. Corrigendum

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. Corrigendum
    5. News
    6. Review
    7. Communications
    8. Articles
    9. Book Reviews
    10. Preview
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  4. News

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. Corrigendum
    5. News
    6. Review
    7. Communications
    8. Articles
    9. Book Reviews
    10. Preview
  5. Review

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. Corrigendum
    5. News
    6. Review
    7. Communications
    8. Articles
    9. Book Reviews
    10. Preview
    1. Photoconduction in Amorphous Organic Solids (pages 666–688)

      Dirk Hertel and Heinz Bässler

      Version of Record online: 27 MAR 2008 | DOI: 10.1002/cphc.200700575

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      The principles of photoconduction in random, organic semiconductors are discussed, the key processes being optical generation of charge carriers and their subsequent transport (see picture). This Review highlights elementary processes and their involvement in modern devices, and addresses recent developments and achievements.

  6. Communications

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. Corrigendum
    5. News
    6. Review
    7. Communications
    8. Articles
    9. Book Reviews
    10. Preview
    1. Formation of Reverse Micelles in a Room-Temperature Ionic Liquid (pages 689–692)

      Muhammad Moniruzzaman, Noriho Kamiya , Kazunori Nakashima and Masahiro Goto 

      Version of Record online: 13 MAR 2008 | DOI: 10.1002/cphc.200700802

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      Nanopools of water in ionic liquids: The surfactant AOT forms reverse micelles with water domains in a hydrophobic ionic liquid in the presence of 1-hexanol (see optically transparent sample B, in figure). These nanopools increase in size with increasing water content.

    2. A Dynamic Model to Explain Hydration Behaviour along the Lanthanide Series (pages 693–696)

      Magali Duvail, Riccardo Spezia and Pierre Vitorge

      Version of Record online: 12 MAR 2008 | DOI: 10.1002/cphc.200700803

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      From nine to eight: Molecular dynamics simulations of all the lanthanide cations in water show that the change in first shell coordination number from nine to eight water molecules (see figure) is not a sudden change in behaviour. Instead, it results from a statistical predominance of one first hydration shell structure containing nine to eight water molecules.

    3. Resonance Raman Cross-Sections and Vibronic Analysis of Rhodamine 6G from Broadband Stimulated Raman Spectroscopy (pages 697–699)

      Sangdeok Shim, Christina M. Stuart and Richard A. Mathies

      Version of Record online: 10 MAR 2008 | DOI: 10.1002/cphc.200700856

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      Molecular resonance quantified: The resonance Raman spectrum of rhodamine 6G is obtained at 532 nm and the scattering cross-sections are quantified using resonance broadband stimulated Raman spectroscopy. Thus, the molecular resonance and surface-enhanced effects in SERRS are quantified for the first time. The surface enhancement is ∼107–108 in typical SERRS experiments.

    4. Ketene Thermochemistry (pages 700–702)

      John M. Simmie, Wayne K. Metcalfe and Henry J. Curran

      Version of Record online: 10 MAR 2008 | DOI: 10.1002/cphc.200800003

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      Reaction intermediates: Enthalpies of formation, ΔHf (298.15 K), of ketene, methylketene and dimethylketene (also carbon suboxide, see figure) are computed with three compound basis set methods (CBS-QB3, CBS-APNO and G3) via a number of isodesmic reactions and also with the atomisation methodology.

    5. Tuning the Geometric Structure by Doping Silicon Clusters (pages 703–706)

      Philipp Gruene, André Fielicke, Gerard Meijer, Ewald Janssens, Vu Thi Ngan, Minh Tho Nguyen and Peter Lievens

      Version of Record online: 13 MAR 2008 | DOI: 10.1002/cphc.200800015

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      Good vibrations: Vibrational spectra of doped silicon clusters are obtained upon IR multiple photon dissociation of their complexes with argon ligands (see figure). The comparison between experiment and calculated spectra of low-lying isomers allows for structural assignments.

  7. Articles

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. Corrigendum
    5. News
    6. Review
    7. Communications
    8. Articles
    9. Book Reviews
    10. Preview
    1. Organelle Tracking in a Living Cell with Microsecond Time Resolution and Nanometer Spatial Precision (pages 707–712)

      Xiaolin Nan, Peter A. Sims and X. Sunney Xie

      Version of Record online: 27 MAR 2008 | DOI: 10.1002/cphc.200700839

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      Particle-tracking: A novel strategy for two-dimensional tracking of gold nanoparticles (GNPs, see figure) transported by molecular motors in a living cell is achieved with high time-resolution and spatial precision. The technique is based on the strong scattering signal from GNPs which is imaged using dark-field microscopy.

    2. Complexation and Fluorescence of Tricyclic Basic Dyes Encapsulated in Cucurbiturils (pages 713–720)

      Pedro Montes-Navajas, Avelino Corma and Hermenegildo Garcia

      Version of Record online: 10 MAR 2008 | DOI: 10.1002/cphc.200700735

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      Encapsulating cucurbiturils: Tricyclic dyes can be inserted into cucurbiturils to form host–guest complexes (see figure). These complexes vary in stoichiometry, depending on the cucurbituril involved. The stoichiometry of the complex plays a major role in the photophysical behaviour of the dyes.

    3. Molecular Diffusion Measurement in Lipid Bilayers over Wide Concentration Ranges: A Comparative Study (pages 721–728)

      Lin Guo, Jia Yi Har, Jagadish Sankaran, Yimian Hong, Balakrishnan Kannan and Thorsten Wohland

      Version of Record online: 13 MAR 2008 | DOI: 10.1002/cphc.200700611

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      Compare and contrast: Lipid bilayer diffusion coefficients are determined at different concentrations and various length scales by four fluorescence methods (see picture): fluorescence recovery after photobleaching (FRAP), fluorescence correlation spectroscopy (FCS), single-particle tracking (SPT), and imaging total internal reflection FCS (ITIR–FCS).

    4. UHV Studies of Methanol Decomposition on Mono- and Bimetallic CoPd Nanoparticles Supported on Thin Alumina Films (pages 729–739)

      Tobias Nowitzki, Holger Borchert, Birte Jürgens, Thomas Risse, Volkmar Zielasek and Marcus Bäumer

      Version of Record online: 17 MAR 2008 | DOI: 10.1002/cphc.200700663

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      One metal or two? Adsorption and reaction studies on well-defined model systems are important to understand the complex surface processes on real catalysts. This fundamental study of the decomposition of methanol on metal clusters (see picture) results in syngas and/or carbon deposits on the particle surfaces depending on their composition.

    5. Thin-Film Properties of DNA and RNA Bases: A Combined Experimental and Theoretical Study (pages 740–747)

      Andrea Haug, Sabine Schweizer, Florian Latteyer, Maria Benedetta Casu, Heiko Peisert, Christian Ochsenfeld and Thomas Chassé

      Version of Record online: 27 MAR 2008 | DOI: 10.1002/cphc.200700667

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      Cytosine′s the odd one out: The structures of the DNA and RNA bases cytosine, uracil, and thymine in films with a nominal thickness of 20 nm are studied. The experimental results, confirmed by computational considerations, indicate that cytosine is composed of two energetically close tautomeric forms (see figure), whereas uracil and thymine exist in only one tautomeric form.

    6. Ordered Mesoporous Thin Films of Rutile TiO2 Nanocrystals Mixed with Amorphous Ta2O5 (pages 748–757)

      Jin-Ming Wu, Markus Antonietti, Silvia Gross, Matthias Bauer and Bernd M. Smarsly

      Version of Record online: 27 MAR 2008 | DOI: 10.1002/cphc.200700679

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      Keeping order: Rutile, one of the polymorphs of TiO2, is of interest for diverse applications, but it is difficult to obtain in the form of films with defined mesoporosity. Such films can be prepared by the addition of Ta2O5 (see image), which leads to interesting photocatalytic activity.

    7. Probing Innovative Microfabricated Substrates for their Reproducible SERS Activity (pages 758–762)

      Dana Cialla, Uwe Hübner, Henrik Schneidewind, Robert Möller and Jürgen Popp

      Version of Record online: 27 MAR 2008 | DOI: 10.1002/cphc.200700705

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      Stars and diamonds: Two kinds of microfabricated SERS-active substrates—gold nanostars and gold nanodiamonds (see SEM image) are investigated. The preparation process guarantees a high reproducibility with enhancement factors of at least 130 for the nanodiamond and 310 for the nanostar arrays.

    8. Development of In Situ Electrochemical Scanning Electron Microscopy with Ionic Liquids as Electrolytes (pages 763–767)

      Satoshi Arimoto , Daisuke Oyamatsu, Tsukasa Torimoto and Susumu Kuwabata 

      Version of Record online: 11 MAR 2008 | DOI: 10.1002/cphc.200700758

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      No charge: Since ionic liquids can be observed by SEM without any charging of the liquid, certain reactions can be observed under polarization conditions. The sequence shows that the oxidation and reduction of a PPy film polarized at various potentials are accompanied by decreases and increases, respectively, in the film thickness.

    9. Photochromic, Thermochromic, and Fluorescent Spirooxazines and Naphthopyrans: A Spectrokinetic and Thermodynamic Study (pages 768–775)

      Maria R. di Nunzio, Pier L. Gentili, Aldo Romani and Gianna Favaro

      Version of Record online: 11 MAR 2008 | DOI: 10.1002/cphc.200700789

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      Switchable coloration: Spirooxazine (SO) and naphthopyran (NP) dyes transform into colored merocyanine forms under thermal and light stimulation, (see picture showing a NP dye). They act as effective thermochromic compounds at high temperature and efficient photochromic compounds at low temperature.

    10. Fe1−yO Nanoparticles: Organometallic Synthesis and Magnetic Properties (pages 776–780)

      Arnaud Glaria, Myrtil L. Kahn, Pierre Lecante, Bernard Barbara and Bruno Chaudret

      Version of Record online: 17 MAR 2008 | DOI: 10.1002/cphc.200700817

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      Structural distortion: A novel, simple and efficient synthesis of Fe1−yO yields crystalline nanoparticles of small size (see figure) without any contaminated phase, allowing the unambiguous study of their magnetic properties.

    11. Methyloxy Substituted Heteroleptic Bis(phthalocyaninato) Yttrium Complexes: Density Functional Calculations (pages 781–792)

      Yuexing Zhang, Xue Cai, Dongdong Qi, Ping Yao, Yongzhong Bian and Jianzhuang Jiang

      Version of Record online: 12 MAR 2008 | DOI: 10.1002/cphc.200700843

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      Tuning double-deckers: Substituent effects in heteroleptic bis(phthalocyaninato) yttrium complexes are systematically studied using DFT calculations (see figure). This proves helpful in designing and preparing double-deckers with tunable properties.

    12. Overcoming Kinetic Limitations of Electron Injection in the Dye Solar Cell via Coadsorption and FRET (pages 793–798)

      Conrad Siegers, Uli Würfel, Markus Zistler, Heiner Gores, Jochen Hohl-Ebinger, Andreas Hinsch and Rainer Haag

      Version of Record online: 12 MAR 2008 | DOI: 10.1002/cphc.200700864

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      Two are better than one: Coadsorbing a fluorescent dye with N719 onto the TiO2 electrode of a transparent dye solar cell leads to photocurrent generation from the additional dye although it is not a good sensitizer for TiO2 alone. This behavior is attributed to resonant energy transfer to N719 (see figure). The latter thus acts as a catalyst for sensitization of a second dye.

  8. Book Reviews

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. Corrigendum
    5. News
    6. Review
    7. Communications
    8. Articles
    9. Book Reviews
    10. Preview
  9. Preview

    1. Top of page
    2. Cover Picture
    3. Graphical Abstract
    4. Corrigendum
    5. News
    6. Review
    7. Communications
    8. Articles
    9. Book Reviews
    10. Preview
    1. Preview: ChemPhysChem 6/2008 (page 806)

      Version of Record online: 27 MAR 2008 | DOI: 10.1002/cphc.200890021

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