ChemPhysChem

Cover image for Vol. 13 Issue 10

Special Issue: Nanomaterials

July 16, 2012

Volume 13, Issue 10

Pages 2421–2615

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Inside Cover
    4. Editorial
    5. Graphical Abstract
    6. News
    7. Minireviews
    8. Concept
    9. Communications
    10. Articles
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    1. Cover Picture: Theory of Chiral Plasmonic Nanostructures Comprising Metal Nanocrystals and Chiral Molecular Media (ChemPhysChem 10/2012) (page 2421)

      Prof. Alexander O. Govorov and Zhiyuan Fan

      Article first published online: 6 JUL 2012 | DOI: 10.1002/cphc.201290046

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      On p. 2551 ff., A. O. Govorov and Z. Fan present a theory of plasmonic nanocrystals interacting with chiral molecular media and show how the chirality of biomolecules can be transferred to the plasmonic resonances. This transfer effect can potentially be utilized in chiral sensors.

  2. Inside Cover

    1. Top of page
    2. Cover Picture
    3. Inside Cover
    4. Editorial
    5. Graphical Abstract
    6. News
    7. Minireviews
    8. Concept
    9. Communications
    10. Articles
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    1. Inside Cover: Spiked Gold Beads as Substrates for Single-Particle SERS (ChemPhysChem 10/2012) (page 2422)

      Paula Aldeanueva-Potel, Dr. Enrique Carbó-Argibay, Dr. Nicolás Pazos-Pérez, Dr. Silvia Barbosa, Dr. Isabel Pastoriza-Santos, Dr. Ramón A. Alvarez-Puebla and Prof. Luis M. Liz-Marzán

      Article first published online: 6 JUL 2012 | DOI: 10.1002/cphc.201290047

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      R. A. Alvarez-Puebla, L. M. Liz-Marzán et al. describe a new type of spiked gold nanoparticle where the size of the core is gradually increased, so that antenna effects contribute to large SERS enhancement factors when engineered into thin films. This is demonstrated on p. 2561 ff. through ultrasensitive analysis of benzenethiol.

  3. Editorial

    1. Top of page
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    3. Inside Cover
    4. Editorial
    5. Graphical Abstract
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    7. Minireviews
    8. Concept
    9. Communications
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      Functional Nanomaterials and Their Applications: From Origins to Unanswered Questions (pages 2423–2425)

      Prof. Dr. Harald Fuchs, Prof. Dr. Thomas J. Webster, Prof. Dr. Zhiyong Tang and Prof. Dr. Florian Banhart

      Article first published online: 21 JUN 2012 | DOI: 10.1002/cphc.201200444

  4. Graphical Abstract

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    2. Cover Picture
    3. Inside Cover
    4. Editorial
    5. Graphical Abstract
    6. News
    7. Minireviews
    8. Concept
    9. Communications
    10. Articles
    11. Preview
  5. News

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    1. New Materials for Advanced Technologies (page 2441)

      Article first published online: 6 JUL 2012 | DOI: 10.1002/cphc.201200519

  6. Minireviews

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    4. Editorial
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    8. Concept
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    1. Size-Dependent Lattice Expansion in Nanoparticles: Reality or Anomaly? (pages 2443–2454)

      P. Manuel Diehm, Dr. Péter Ágoston and Prof. Dr. Karsten Albe

      Article first published online: 22 JUN 2012 | DOI: 10.1002/cphc.201200257

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      Increasing lattice parameters for nanoparticles of decreasing sizes have been reported for a large variety of materials. The authors summarize experimental results and examine the theoretical foundation of this seemingly anomalous behavior, revealing that negative surface stress is the decisive factor. The picture shows the local atomic strain in a hexagonal GaN nanoparticle (where the blue shades represent negative strains, or contraction, and the yellow–red ones denote positive strains, i.e., expansion).

    2. Bioinspired Ion-Transport Properties of Solid-State Single Nanochannels and Their Applications in Sensing (pages 2455–2470)

      Dr. Ye Tian, Liping Wen, Dr. Xu Hou, Dr. Guanglei Hou and Prof. Lei Jiang

      Article first published online: 19 JUN 2012 | DOI: 10.1002/cphc.201200057

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      Inspired by nature: Mechanically robust solid-state single nanochannels have been developed that not only imitate the intriguing ion-transport properties of their biological counterparts, but can also be applied in real-world applications, such as biosensors (see picture).

    3. Hybrid Polymer–Nanocrystal Materials for Photovoltaic Applications (pages 2471–2480)

      Renjia Zhou and Prof. Jiangeng Xue

      Article first published online: 27 MAR 2012 | DOI: 10.1002/cphc.201101016

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      Hybrid materials for photovoltaics: The recent development of solution-processed hybrid polymer–nanocrystal photovoltaic cells is reviewed. The tailoring of colloidal nanocrystals and conjugated polymers as well as the manipulation of polymer–nanocrystal interfaces and device architectures are highlighted. The picture shows device structure and JV characteristics of a hybrid photovoltaic device.

    4. Nanomaterial-Based Treatments for Medical Device-Associated Infections (pages 2481–2494)

      Dr. Nhiem Tran and Dr. Phong A. Tran

      Article first published online: 19 APR 2012 | DOI: 10.1002/cphc.201200091

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      Nanomaterials to the rescue: Medical-device-associated bacterial infections remain challenges to modern medicine. Several nanomaterials have proven to be effective antibacterial agents (see graphic). The increasing number of antibiotic-resistant bacteria makes such materials valuable tools for fighting infection.

    5. Recent Advances in Research Applications of Nanophase Hydroxyapatite (pages 2495–2506)

      Dr. Kate Fox, Dr. Phong A. Tran and Dr. Nhiem Tran

      Article first published online: 29 MAR 2012 | DOI: 10.1002/cphc.201200080

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      Biocompatible nanomaterials: Nano-hydroxyapatite materials combine the benefits of nanosized particles with the main organic phase of bone, hydroxyapatite. The advantages of nano-hydroxyapatite are biocompatibility, controlled delivery and capacity to couple with hydrophobic materials. This Minireview discusses the syntheses of nano-hydroxyapatite materials and their applications in the fields of hard tissue repair, drug delivery, antibacterial treatments, magnetic delivery and gene therapy.

  7. Concept

    1. Top of page
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    3. Inside Cover
    4. Editorial
    5. Graphical Abstract
    6. News
    7. Minireviews
    8. Concept
    9. Communications
    10. Articles
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    1. Poly(N-Isopropylacrylamide)-Based Microgels and Their Assemblies for Organic-Molecule Removal from Water (pages 2507–2515)

      Deepika Parasuraman, Avijeet K. Sarker and Prof. Michael J. Serpe

      Article first published online: 26 APR 2012 | DOI: 10.1002/cphc.201200025

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      Water contamination is a global epidemic, and new, more effective water-remediation approaches need to be devised. In this Concept, the authors review basic water-remediation approaches with a focus on water remediation using poly(N-isopropylacrylamide)-based microgels and their assemblies.

  8. Communications

    1. Top of page
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    4. Editorial
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    1. Systematic Studies of UV Stability and Photopolymerization Efficiency of DNA-Based Nanomaterials (pages 2517–2521)

      Dr. Young Hoon Roh, Jae Hyon Park, Jessica Jane Ye, Ja Eun Lee and Prof. Dan Luo

      Article first published online: 6 JUL 2012 | DOI: 10.1002/cphc.201200184

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      DNA photoreaction system: The UV stability and photopolymerization efficiency of DNA nanomaterials is investigated to establish an optimized photoreaction system. Various parameters related to the DNA building blocks and the photoreaction conditions (see picture) are examined and optimized.

    2. Polarization Properties of a CdSe/ZnS and Au Nanoparticle Dimer (pages 2522–2525)

      Daniel Ratchford, Dr. Farbod Shafiei, Dr. Stephen K. Gray and Prof. Xiaoqin Li

      Article first published online: 29 MAR 2012 | DOI: 10.1002/cphc.201101051

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      A hybrid CdSe/ZnS quantum dot and gold nanoparticle dimer is assembled using AFM nanomanipulation. The quantum dot acquires a pronounced polarization dependence on the incident excitation light due to the excitation of localized surface plasmons in the gold nanoparticle (see picture). A large polarization contrast ratio beyond the maximum field enhancement is observed and explained quantitatively.

    3. H2O2-Aided Seed-Mediated Synthesis of Silver Nanoplates with Improved Yield and Efficiency (pages 2526–2530)

      Na Li, Qiao Zhang, Sean Quinlivan, James Goebl, Prof. Yang Gan and Prof. Yadong Yin

      Article first published online: 1 FEB 2012 | DOI: 10.1002/cphc.201101018

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      Nanoplates: Hydrogen peroxide is added in a seed-mediated growth process for producing silver nanoplates (see graphic) with not only significantly improved synthetic yield, but also greatly shortened reaction time and much enhanced reproducibility.

    4. Facile Preparation of Ag2S/Ag Semiconductor/Metal Heteronanostructures with Remarkable Antibacterial Properties (pages 2531–2535)

      Xiaohong Ma, Yuyun Zhao, Prof. Xingyu Jiang, Prof. Wei Liu, Prof. Shaoqin Liu and Prof. Zhiyong Tang

      Article first published online: 7 MAR 2012 | DOI: 10.1002/cphc.201101013

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      Ag2S/Ag heterostructure nanoparticles with narrow size distribution are synthesized by a one-pot method at room temperature. The prepared nanohybrids show excellent photocatalytic inactivation of Escherichia coli under UV irradiation.

    5. A Highly Efficient and Selective Polysilsesquioxane Sorbent for Heavy Metal Removal (pages 2536–2539)

      Xiaonan Duan, Dr. Genggeng Qi, Prof. Peng Wang and Prof. Emmanuel P. Giannelis

      Article first published online: 29 FEB 2012 | DOI: 10.1002/cphc.201100988

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      Suited for heavy stuff: An efficient mesoporous sorbent based on a pure ethylendiamine-bridged polysilsesquioxane is presented. This material, with both a high amine loading and a high surface area, is applied for heavy metal ion removal.

    6. Large-Scale Synthesis of Ultra-Small-Sized Silver Nanoparticles (pages 2540–2543)

      Jinkyung Park, Soon Gu Kwon, Samuel Woojoo Jun, Byung Hyo Kim and Prof. Taeghwan Hyeon

      Article first published online: 27 APR 2012 | DOI: 10.1002/cphc.201101035

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      Large scale for small size: We report a large-scale synthetic method to produce uniform and ultra-small-sized Ag nanoparticles (see picture) with good productivity. This method is simple and efficient. It produces Ag nanoparticles within 20 min by heating a reaction mixture containing only three chemicals. The size of the nanoparticles is controlled by varying the heating rate.

    7. On the Mechanisms of Ni-Catalysed Graphene Chemical Vapour Deposition (pages 2544–2549)

      Robert S. Weatherup, Bernhard C. Bayer, Dr. Raoul Blume, Dr. Carsten Baehtz, Piran R. Kidambi, Martin Fouquet, Dr. Christoph T. Wirth, Prof. Robert Schlögl and Dr. Stephan Hofmann

      Article first published online: 29 FEB 2012 | DOI: 10.1002/cphc.201101020

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      How does your graphene grow? In situ X-ray photoelectron spectroscopy and X-ray diffraction measurements during chemical vapor deposition on Ni catalyst films show that graphene forms both isothermally and by precipitation on cooling (see picture). A coherent graphene growth model is devised and sub-surface dissolved carbon is shown to play an important role.

  9. Articles

    1. Top of page
    2. Cover Picture
    3. Inside Cover
    4. Editorial
    5. Graphical Abstract
    6. News
    7. Minireviews
    8. Concept
    9. Communications
    10. Articles
    11. Preview
    1. Theory of Chiral Plasmonic Nanostructures Comprising Metal Nanocrystals and Chiral Molecular Media (pages 2551–2560)

      Prof. Alexander O. Govorov and Zhiyuan Fan

      Article first published online: 16 FEB 2012 | DOI: 10.1002/cphc.201100958

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      Chirality transfer: In large chiral plasmonic structures, a new electrodynamic mechanism of plasmonic CD that is qualitatively different to near-field, dipolar mechanism of plasmonic chirality is described. The models presented also show that anisotropic nanocrystals have strongly enhanced CD at the plasmonic frequency.

    2. Spiked Gold Beads as Substrates for Single-Particle SERS (pages 2561–2565)

      Paula Aldeanueva-Potel, Dr. Enrique Carbó-Argibay, Dr. Nicolás Pazos-Pérez, Dr. Silvia Barbosa, Dr. Isabel Pastoriza-Santos, Dr. Ramón A. Alvarez-Puebla and Prof. Luis M. Liz-Marzán

      Article first published online: 22 FEB 2012 | DOI: 10.1002/cphc.201101014

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      One to enhance them all: Spiked gold beads are efficient optical enhancers for single-particle SERS ultradetection (see picture), due to the localization of high electric fields at the apex of the tips and the antenna effect displayed by the core.

    3. TiO2 Composing with Pristine, Metallic or Semiconducting Single-Walled Carbon Nanotubes: Which Gives the Best Performance for a Dye-Sensitized Solar Cell (pages 2566–2572)

      Guan Hong Guai, Yao Li, Dr. Chee Mang Ng, Prof. Chang Ming Li and Prof. Mary B. Chan-Park

      Article first published online: 6 JUN 2012 | DOI: 10.1002/cphc.201200156

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      Photoanodes based on TiO2 with either pristine (p-), metallic (m-), or semiconducting (s-) single-walled carbon nanotubes (SWCNTs) are prepared and characterized. The mobility of s-SWCNTs and their suppression of charge recombination towards I3 redox species (see picture) allow a more positive synergistic influence over the charge separation/collection within TiO2 films while p- and m-SWCNTs tend to accelerate charge recombinations.

    4. Scattering of Light by Plasmonic Nanoparticles on a Silicon Substrate (pages 2573–2577)

      Meng Yang, Jie Li, Jiaming Li and Prof. Xing Zhu

      Article first published online: 30 MAY 2012 | DOI: 10.1002/cphc.201200078

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      Linear tuning: The scattering of spherical silver nanoparticles is studied on a silicon substrate. A red shift of the scattering peaks is observed as the thickness of the silicon substrate increases. The two scattering peaks in the blue curve correspond to the nanoparticle quadrupole and dipole modes, as shown in the picture.

    5. Surface Modification of Nanodiamond under Bingel–Hirsch Conditions (pages 2578–2584)

      Patrick Betz and Prof. Dr. Anke Krueger

      Article first published online: 18 APR 2012 | DOI: 10.1002/cphc.201101050

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      Functionalized nanodiamond carrying a variety of terminal groups is synthesized by applying the Bingel–Hirsch reaction of bromomalonates with the surface of the diamond nanoparticles.

    6. Synthesis of Antimony-Based Nanowires Using the Simple Vapor Deposition Method (pages 2585–2588)

      Yunlong Zi, Yanjie Zhao, Drew Candebat, Prof. Joerg Appenzeller and Prof. Chen Yang

      Article first published online: 21 MAR 2012 | DOI: 10.1002/cphc.201101042

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      GaSb and InSb nanowires: Vapor deposition is used for the synthesis of high quality GaSb and InSb nanowires. Epitaxial growth and doping capability are also demonstrated. The high on-currents of InSb nanowire field-effect transistors qualify nanowires synthesized for electronic applications.

    7. Design of a Water-Soluble Hybrid Nanocomposite of CdTe Quantum Dots and an Iridium Complex for Photoinduced Charge Transfer (pages 2589–2595)

      Yu Wang, Dr. Steve Li, Dr. Stephen V. Kershaw, Frederik Hetsch, Anthony Y. Y. Tam, Guangcun Shan, Dr. Andrei S. Susha, Prof. Chi-Chiu Ko, Prof. Vivian Wing-Wah Yam, Prof. Kenneth K. W. Lo and Prof. Andrey L. Rogach

      Article first published online: 12 APR 2012 | DOI: 10.1002/cphc.201101005

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      Fast electron transfer: Picosecond charge transfer between CdTe quantum dots and a novel water-soluble organo-Ir dye is shown. This process allows hot electron transfer from the nanoparticles to the organic component before cooling is complete and before Auger relaxation processes can compete for the carrier's excess energy. Understanding and controlling fast charge transfer is a key to making improved solar-energy conversion devices.

    8. Engineering the Atomic Structure of Carbon Nanotubes by a Focused Electron Beam: New Morphologies at the Sub-Nanometer Scale (pages 2596–2600)

      Dr. Julio A. Rodríguez-Manzo, Dr. Arkady V. Krasheninnikov and Prof. Florian Banhart

      Article first published online: 12 MAR 2012 | DOI: 10.1002/cphc.201101000

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      Many morphologies: Irradiation with a focused electron beam can be used to puncture carbon nanotubes, and to create defects in pre-defined locations. These defects lead to new structures and morphologies in double- and triple-walled carbon nanotubes, connecting the walls in a unique way.

    9. Composition-Tunable Pt–Co Alloy Nanoparticle Networks: Facile Room-Temperature Synthesis and Supportless Electrocatalytic Applications (pages 2601–2609)

      You Xu, Yongqiang Yuan, Aijing Ma, Xuan Wu, Yang Liu and Prof. Bin Zhang

      Article first published online: 13 APR 2012 | DOI: 10.1002/cphc.201100989

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      Spongelike networks of Pt–Co alloy nanoparticles with tunable composition (see picture) are synthesized by facile, one-step co-reduction of metal precursors with NaBH4 in a two-phase system at room temperature. These nanoparticle networks (NNs) exhibit high stability and enhanced electrocatalytic activity in methanol and formic acid oxidation compared to commercial Pt/C catalyst.

    10. Water-Soluble Monodispersed Lanthanide Oxide Submicrospheres: PVP-Assisted Hydrothermal Synthesis, Size-Control and Luminescence Properties (pages 2610–2614)

      Ying Cui, Dr. Xiaoyong Lai, Dr. Li Li, Dr. Zhudong Hu, Shuo Wang, Dr. Jonathan E. Halpert, Prof. Ranbo Yu and Prof. Dan Wang

      Article first published online: 23 DEC 2011 | DOI: 10.1002/cphc.201100806

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      Easy! A facile hydrothermal synthetic route is presented to prepare a class of monodispersed lanthanide-based compound submicrospheres with controllable size (see picture). The method only employs raw lanthanide oxides as starting material, urea as precipitator and poly(N-vinyl-2-pyrrolidone) as surfactant.

  10. Preview

    1. Top of page
    2. Cover Picture
    3. Inside Cover
    4. Editorial
    5. Graphical Abstract
    6. News
    7. Minireviews
    8. Concept
    9. Communications
    10. Articles
    11. Preview
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      Preview: ChemPhysChem 11/2012 (page 2615)

      Article first published online: 6 JUL 2012 | DOI: 10.1002/cphc.201290050

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