Particle & Particle Systems Characterization

Cover image for Vol. 30 Issue 12

December 2013

Volume 30, Issue 12

Pages 999–1104

  1. Cover Picture

    1. Top of page
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    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Reviews
    8. Communications
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      Drug Delivery: Design of a Novel Mesoporous Organosilica Hybrid Microcarrier: a pH Stimuli-Responsive Dual-Drug-Delivery Vehicle for Intracellular Delivery of Anticancer Agents (Part. Part. Syst. Charact. 12/2013) (page 999)

      Madhappan Santha Moorthy, Jae-Ho Bae, Mi-Ju Kim, Sun-Hee Kim and Chang-Sik Ha

      Version of Record online: 12 DEC 2013 | DOI: 10.1002/ppsc.201370046

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      Mesoporous organosilica hybrid microcarriers (HMCs) are fabricated with double ligands integrated into the framework of the macrocarrier, as described by Chang-Sik Ha and co-workers on page 1044. This technique possibly opens up a new strategy for current and future biomedical applications towards encapsulation and tunable delivery of dual drugs to various physiological regions, using the designed single-carrier system.

  2. Inside Front Cover

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    5. Masthead
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      Nanotoxicity: Single-Cell Investigations of Silver Nanoparticle–Bacteria Interactions (Part. Part. Syst. Charact. 12/2013) (page 1000)

      Sudarsan Vishnupriya, Kamalesh Chaudhari, Ramya Jagannathan and Thalappil Pradeep

      Version of Record online: 12 DEC 2013 | DOI: 10.1002/ppsc.201370047

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      Escherichia coli bacteria treated with citratereduced silver nanoparticles (AgNPs) are visualized using dark field scattering microscopy. The inset shows an AgNP spot on which surfaceenhanced Raman spectroscopy was carried out. The spectrum suggests that the interaction of AgNPs with bacterial DNA is one of the crucial steps in its antibacterial action. Thalappil Pradeep and co-workers discuss further on page 1056.

  3. Back Cover

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      Solar Cells: Carbohydrate-Derived Carbon Sheaths on TiO2 Nanoparticle Photoanodes for Efficiency Enhancement in Dye-Sensitized Solar Cells (Part. Part. Syst. Charact. 12/2013) (page 1106)

      Yu Jin Jang, Yoon Hee Jang and Dong Ha Kim

      Version of Record online: 12 DEC 2013 | DOI: 10.1002/ppsc.201370050

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      A method for improving the performance of dyesensitized solar cells is discussed by Dong Ha Kim and co-workers on page 1030. This facile protocol uses TiO2 nanoparticles, which are derived from the calcination of a low-cost, ecofriendly, and readily available carbohydrate species, decorated with thin carbon coatings.

  4. Masthead

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      Masthead: (Part. Part. Syst. Charact. 12/2013)

      Version of Record online: 12 DEC 2013 | DOI: 10.1002/ppsc.201370049

  5. Contents

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    3. Inside Front Cover
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    5. Masthead
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  6. Reviews

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    1. Stem Cell Labeling and Tracking with Nanoparticles (pages 1006–1017)

      Chao Liang, Chao Wang and Zhuang Liu

      Version of Record online: 7 AUG 2013 | DOI: 10.1002/ppsc.201300199

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      Accurate and reliable stem cell tracking is important in both fundamental stem cell research and clinical applications of stem cell technology. Recent progress in the development of various nanomaterials for stem cell labeling and tracking is reviewed and the current challenges and future prospects in this direction are discussed.

  7. Communications

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    1. Nanostructural Characterization of Biomagnetic Cobalt Ferrite–Alginate Nanospheres (pages 1018–1023)

      Laura De Matteis, Rodrigo Fernández-Pacheco, Clara Marquina, Manuel Ricardo Ibarra and Jesús M. de la Fuente

      Version of Record online: 10 JUL 2013 | DOI: 10.1002/ppsc.201300153

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      Alginate nanobeads encapsulating magnetic cobalt ferrite nanoparticles are synthesized by an aerosol–ionotropic gelation method. The nanobeads are characterized in environmental-like conditions by means of advanced electron microscopy techniques. The proposed synthetic method and the combination of the different electron microscopy techniques can be extended to design and characterize a variety of nanosized soft materials.

    2. Colloidal Synthesis of Cu2SxSe1–x Hexagonal Nanoplates and Their Transformation to CdSxSe1–x and ZnSxSe1–x by the Cation-Exchange Reaction (pages 1024–1029)

      Shi-Kui Han, Ming Gong, Ze-Ming Wang, Chao Gu and Shu-Hong Yu

      Version of Record online: 25 JUL 2013 | DOI: 10.1002/ppsc.201300166

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      Hexagonal Cu2S1-xSex nanoplates (x ≠ 1) can be directly synthesized by a colloidal solution reaction using CuCl, S, and SeO2 as precursors, which can be further transformed into well-crystallized wurtzite CdSxSe1-x and ZnSxSe1-x hexagonal nanoplates and zincblende CdSe and ZnSe tetrahedral nanocrystals, respectively, by the cation-exchange reaction.

    3. Carbohydrate-Derived Carbon Sheaths on TiO2 Nanoparticle Photoanodes for Efficiency Enhancement in Dye-Sensitized Solar Cells (pages 1030–1033)

      Yu Jin Jang, Yoon Hee Jang and Dong Ha Kim

      Version of Record online: 26 JUN 2013 | DOI: 10.1002/ppsc.201300188

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      A rapid and cost-effective protocol for the fabrication of TiO2 nanoparticles decorated with thin carbon coatings, which are derived from the calcination of a low-cost, eco-friendly, and readily available carbohydrate species, is established. The method is used to improve the performance of dye-sensitized solar cells.

    4. A ROS Eliminating Nanocomposite Film Fabricated from Diselenide-Containing Polymer Micelles (pages 1034–1038)

      Shaobo Ji, Wei Cao and Huaping Xu

      Version of Record online: 7 AUG 2013 | DOI: 10.1002/ppsc.201300222

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      The presence of too many reactive oxygen species (ROS) will damage cells. To eliminate ROS, a nanocomposite film containing diselenide bonds is fabricated via the layer-by-layer assembly method, using adamantane-terminated diselenide block copolymer micelles and β-cyclodextrin-modified nanoparticles as building blocks. This film possesses potential stability under the normal physiological condition and can eliminate different kinds of ROS.

    5. Amino Acid Structure Determines the Immune Responses Generated by Peptide–Gold Nanoparticle Hybrids (pages 1039–1043)

      Hong Yang, Yingzhe Zhou, Shan-Yu Fung, Licun Wu, Kevin Tsai, Rusung Tan, Stuart E. Turvey, Tiago Machuca, Marc de Perrot, Thomas K. Waddell and Mingyao Liu

      Version of Record online: 16 JUL 2013 | DOI: 10.1002/ppsc.201300213

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      By tuning the chemical modalities on gold nanoparticle surface using hexapeptide ligands the responses of immune cells (dendritic cells) to nanoparticles can be remarkably manipulated from minimum reaction (in the presence of negatively charged peptide ligands) to activation (in the presence of peptide ligands with aromatic rings containing amino acids).

  8. Full Papers

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Reviews
    8. Communications
    9. Full Papers
    1. Design of a Novel Mesoporous Organosilica Hybrid Microcarrier: a pH Stimuli-Responsive Dual-Drug-Delivery Vehicle for Intracellular Delivery of Anticancer Agents (pages 1044–1055)

      Madhappan Santha Moorthy, Jae-Ho Bae, Mi-Ju Kim, Sun-Hee Kim and Chang-Sik Ha

      Version of Record online: 25 JUL 2013 | DOI: 10.1002/ppsc.201300164

      Thumbnail image of graphical abstract

      Mesoporous organosilica hybrid microcarriers (HMCs) are fabricated. The double ligand bearing HMC is well oriented to encapsulate two drugs in a single entity. The interaction modes play key roles in the release of each drug by a pH trigger. In vitro fluorescent confocal microscopic studies provide evidence for a pH-responsive dual-drug-delivery system.

    2. Single-Cell Investigations of Silver Nanoparticle–Bacteria Interactions (pages 1056–1062)

      Sudarsan Vishnupriya, Kamalesh Chaudhari, Ramya Jagannathan and Thalappil Pradeep

      Version of Record online: 1 JUL 2013 | DOI: 10.1002/ppsc.201300165

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      The interactions of E. coli with citrate-reduced silver nanoparticles (AgNPs) are studied using Raman spectroscopy and plasmon resonance imaging of single bacterial cells. While attachment of nanoparticles to bacteria is evident in plasmonic hyperspectral imaging, molecular changes of the adsorbed DNA are seen in Raman spectra. Specific interactions of AgNPs with exocyclic nitrogen present in the bases, adenine, guanine, and cytosine leads to time-dependent changes in the DNA.

    3. A Self-Assembly Route to an Iron Phthalocyanine/Reduced Graphene Oxide Hybrid Electrocatalyst Affording an Ultrafast Oxygen Reduction Reaction (pages 1063–1070)

      Takaaki Taniguchi, Hikaru Tateishi, Shinnsuke Miyamoto, Kazuto Hatakeyama, Chikako Ogata, Asami Funatsu, Shinya Hayami, Yuki Makinose, Nobuhiro Matsushita, Michio Koinuma and Yasumichi Matsumoto

      Version of Record online: 1 JUL 2013 | DOI: 10.1002/ppsc.201300177

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      A hybrid material consisting of an ultrathin iron phthalocyanine layer self-assembled on reduced graphene oxide exhibits excellent catalytic activity that is superior to that of commercial Pt/C for an oxygen reduction reaction.

    4. Aptamer-Assisted Assembly of Gold Nanoframe Dimers (pages 1071–1078)

      Zachary A. Combs, Sidney T. Malak, Tobias König, Mahmoud A. Mahmoud, Jorge L. Chávez, Mostafa A. El-Sayed, Nancy Kelley-Loughnane and Vladimir V. Tsukruk

      Version of Record online: 10 JUL 2013 | DOI: 10.1002/ppsc.201300187

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      The novel electrostatic assembly of gold nanoframes using aptamer-functionalized spherical gold nanoparticles is demonstrated. This allows for widened hot spots that provide a unique, highly sensitive and selective detection region for biological surface-enhanced Raman scattering (SERS) sensing.

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      The Toxicity of Silver Nanoparticles Depends on Their Uptake by Cells and Thus on Their Surface Chemistry (pages 1079–1085)

      Encarnación Caballero-Díaz, Christian Pfeiffer, Lena Kastl, Pilar Rivera-Gil, Bartolome Simonet, Miguel Valcárcel, Javier Jiménez-Lamana, Francisco Laborda and Wolfgang J. Parak

      Version of Record online: 17 JUL 2013 | DOI: 10.1002/ppsc.201300215

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      Three types of modified silver nanoparticles (Ag NPs) composed of a same silver core but different surface coatings are synthesized and their toxicities compared. The results reveal that the toxicity can be modulated by modifying the surface chemistry since this determines the different cellular uptake and agglomeration behavior of nanoparticles with the same silver core. Additionally, all studied Ag NPs are less toxic than free silver ions taking silver nitrate as reference.

    6. Graphene Quantum Dots from Polycyclic Aromatic Hydrocarbon for Bioimaging and Sensing of Fe3+ and Hydrogen Peroxide (pages 1086–1092)

      Li Zhou, Junlong Geng and Bin Liu

      Version of Record online: 7 AUG 2013 | DOI: 10.1002/ppsc.201300170

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      A facile approach for large-scale synthesis of photoluminescent graphene quantum dots (GQDs) from commercially available polycyclic aromatic hydrocarbon is reported. The GQDs possess tunable photoluminescence, high water solubility, good optical stability, and low cytotoxicity, which make them not only promising probes for bioimaging and but also efficient for Fe3+ and H2O2 sensing.

    7. Room-Temperature Synthesis of High Surface Area Anatase TiO2 Exhibiting a Complete Lithium Insertion Solid Solution (pages 1093–1104)

      Snehangshu Patra, Carine Davoisne, Stéphanie Bruyère, Houssny Bouyanfif, Sophie Cassaignon, Pierre-Louis Taberna and Frédéric Sauvage

      Version of Record online: 13 AUG 2013 | DOI: 10.1002/ppsc.201300178

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      The synthesis of highly divided anatase TiO2 nanoparticles with 300 m2 g−1 surface area at room temperature is achieved. These particles of 4 nm size exhibit a complete solid solution lithium insertion mechanism providing perfectly stable ≈120 mAh g−1 gravimetric capacity for over 150 cycles with an exceptional mean coulombic efficiency as high as 99.953%.

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