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Power- and energy-dependent photoluminescence of Eu3+ incorporated and segregated ZnO polycrystalline nanobelts synthesized by a facile combustion method followed by heat treatment

Baochang Cheng、Zhaodong Zhang、Hongjuan Liu 等 6 位作者2010-01-01Journal of Materials Chemistry

A simple and efficient combustion method has been developed for pure and doped ZnO polycrystalline nanobelts. Eu3+ can form a supersaturated solid solution in the nanobelts annealed at 600 °C. Photogenerated electrons cannot transfer effectively from the ZnO conduction band (CB) to the excited states of incorporated E…

ZnO doping and propertiesPerovskite Materials and ApplicationsQuantum Dots Synthesis And Properties

New Guanidinium-based Room-temperature Ionic Liquids. Substituent and Anion Effect on Density and Solubility in Water

Milen G. Bogdanov、Desislava Petkova、Stanimira Hristeva 等 5 位作者2010-01-01Zeitschrift für Naturforschung B

In order to examine the influence of the alkyl chain length on some physical properties of guanidinium salts, the synthesis of a homologous series of new N″-n-alkylsubstituted N,N-diethyl-N′ ,N′- di-n-propyl-N″-n-hexyl guanidinium ionic liquids (gILs), containing chloride (Cl), tetrafluoroborate (BF 4 ), acesulfamate…

Ionic liquids properties and applicationsMulticomponent Synthesis of HeterocyclesSynthesis and properties of polymers

Multiresonant Metamaterial Based on Asymmetric Triangular Electromagnetic Resonators

Cheng Zhu、Jingjing Ma、Long Li 等 4 位作者2010-01-01IEEE Antennas and Wireless Propagation Letters

A new multiresonant metamaterial composed of asymmetric triangular electromagnetic resonators (ATERs) is presented in this letter. The ATERs' structure has one electric resonance and two magnetic resonances. The parametric retrieval and eigenmode analysis based on simulations and experiments are utilized to gain an in…

Antenna Design and AnalysisMetamaterials and Metasurfaces ApplicationsAdvanced Antenna and Metasurface Technologies

Controlled growth of inorganic nanocrystals: size and surface effects of nuclei

Shuling Shen、Xun Wang2010-01-01Chemical Communications

Controlled growth is the prerequisite for designing and tailoring the chemical and physical properties of inorganic nanocrystals according to practical applications. This article summarizes recent advances in the controlled growth of inorganic nanocrystals, with primary emphasis on our own work-size and surface effect…

Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsCopper-based nanomaterials and applications

Molecular organization in self-assembled binary porphyrin nanotubes revealed by resonance Raman spectroscopy

Ricardo Franco、John L. Jacobsen、Haorong Wang 等 9 位作者2010-01-01Physical Chemistry Chemical Physics

Porphyrin nanotubes were formed by the ionic self-assembly of tetrakis(4-sulfonatophenyl) porphyrin diacid (H(4)TPPS(4)(2-)) and Sn(IV) tetra(4-pyridyl) porphyrin (Sn(OH(-))(X)TPyP(4+/5+) [X = OH(-) or H(2)O]) at pH 2.0. As reported previously, the tubes are hollow as revealed by transmission electron microscopy, appr…

Photosynthetic Processes and MechanismsSupramolecular Chemistry and ComplexesPorphyrin and Phthalocyanine Chemistry

Resolution of chiral polyoxoanion [P2Mo18O62]6− with histidine

Ding Liu、Huaqiao Tan、Weilin Chen 等 5 位作者2010-01-01CrystEngComm

The classical Dawson-type racemic polyoxoanions [P2Mo18O62]6− have been separated in aqueous solution with L,D-histidine, respectively. Two enantiomerically pure compounds: H3(L-HC6H9N3O2)3[P2Mo18O62]·20H2O (1a), H3(D-HC6H9N3O2)3[P2Mo18O62]·20H2O (1b), have been synthesized.

Metal-Organic Frameworks: Synthesis and ApplicationsPolyoxometalates: Synthesis and ApplicationsVanadium and Halogenation Chemistry

Modelling of Graphene Nanoribbon Fermi Energy

Zaharah Johari、Mohammad Taghi Ahmadi、Desmond C. Y. Chek 等 5 位作者2010-01-01Journal of Nanomaterials

Graphene nanoribbon (GNR) is a promising alternative to carbon nanotube (CNT) to overcome the chirality challenge as a nanoscale device channel. Due to the one‐dimensional behavior of plane GNR, the carrier statistic study is attractive. Research works have been done on carrier statistic study of GNR especially in the…

Carbon Nanotubes in CompositesGraphene research and applicationsTopological Materials and Phenomena

Anodic TiO2 nanotube arrays with optical wavelength-sized apertures

Arash Mohammadpour、Karthik Shankar2010-01-01Journal of Materials Chemistry

We report on the fabrication and optical properties of very large diameter titanium dioxide nanotube (NT) arrays with inner diameters as large as 900 nm, which surpass the largest inner diameter reported thus far for anodically formed self-organized TiO2 NTs by a factor of 2.5.

TiO2 Photocatalysis and Solar CellsNanowire Synthesis and ApplicationsAnodic Oxide Films and Nanostructures

Electrochemically erasable hydrogen-bonded thin films

Daniel Schmidt、Paula T. Hammond2010-01-01Chemical Communications

We report a new method to trigger the dissolution of hydrogen-bonded layer-by-layer thin films through electrochemical reduction of dissolved oxygen, which raises the local pH.

Advanced Sensor and Energy Harvesting MaterialsPolymer Surface Interaction StudiesMolecular Junctions and Nanostructures

Preparation of Bulk 13C‐Enriched Graphene Materials

Leilei Tian、Xin Wang、Li Cao 等 7 位作者2010-01-01Journal of Nanomaterials

Arc‐discharge has been widely used in the bulk production of various carbon nanomaterials, especially for structurally more robust single‐walled carbon nanotubes. In this paper, the same bulk‐production technique was applied to the synthesis of significantly 13 C‐enriched graphitic materials, from which graphene oxide…

Advancements in Battery MaterialsCarbon Nanotubes in CompositesGraphene research and applications

Highly efficient aerobic oxidation of alkenes over unsupported nanogold

Malika Boualleg、Kevin Guillois、Bertrand Istria 等 8 位作者2010-01-01Chemical Communications

An octylsilane-stabilized colloidal dispersion of 2 nm crystalline gold nanoparticles is highly active and selective for the aerobic oxidations of stilbene and cyclohexene in methylcyclohexane.

Catalytic Processes in Materials ScienceOxidative Organic Chemistry ReactionsAdvanced Nanomaterials in Catalysis

Exploring the redox reactivity of magnesium porphine. Insight into the origins of electropolymerisation

Charles H. Devillers、Dominique Lucas、Abdou K. D. Dimé 等 5 位作者2010-01-01Dalton Transactions

Magnesium(II) porphine, MgP (1), was synthesised according to the Lindsey procedure allowing to isolate and crystallise 1-formyldipyrromethane (2) as a synthetic intermediate. Unprecedented X-ray diffraction studies revealed multiple intermolecular associations in the crystal between neighbouring units of 2, namely hy…

Radical Photochemical ReactionsPorphyrin and Phthalocyanine ChemistryLuminescence and Fluorescent Materials

Bioinspired noncovalently crosslinked “fuzzy” carbon nanotube bundles with superior toughness and strength

Graham Bratzel、Steven W. Cranford、Horacio D. Espinosa 等 4 位作者2010-01-01Journal of Materials Chemistry

Carbon nanotubes (CNTs) constitute a prominent example of structural nanomaterials, with many potential applications that could take advantage of their unique mechanical properties. Utilizing the inherent strength of CNTs at larger length-scales is, however, hindered by the inherently weak inter-tube bonding interacti…

Carbon Nanotubes in CompositesFiber-reinforced polymer compositesAdvanced Materials and Mechanics

MR molecular imaging of HER‐2 in a murine tumor xenograft by SPIO labeling of anti‐HER‐2 affibody

Manabu Kinoshita、Yoshichika Yoshioka、Yoshiko Okita 等 5 位作者2010-01-01Contrast Media & Molecular Imaging

In vivo molecular imaging is a rapidly growing research area both for basic and clinical science. Non-invasive imaging of in vivo conditions at the molecular level increases understanding of the biological characteristics of normal and diseased tissues without the need for invasive surgical procedures. Among the vario…

Nanoparticle-Based Drug DeliveryAdvanced MRI Techniques and ApplicationsAdvanced Electron Microscopy Techniques and Applications

Dipole and quadrupole surface plasmon resonance contributions in formation of near-field images of a gold nanosphere

Mykola Shopa、K. Kolwas、A. Derkachova 等 4 位作者2010-01-01Opto-Electronics Review

Abstract Multipolar plasmon optical excitations at spherical gold nanoparticles and their manifestations in the particle images formatted in the particle surface proximity are studied. The multipolar plasmon size characteristic: plasmon resonance frequencies and plasmon damping rates were obtained within rigorous size…

Gold and Silver Nanoparticles Synthesis and ApplicationsPlasmonic and Surface Plasmon ResearchNear-Field Optical Microscopy

A new CoFe2O4–Cr2O3–SiO2 fluorescent magnetic nanocomposite

C. Borgohain、Kula Kamal Senapati、Debabrata Mishra 等 5 位作者2010-01-01Nanoscale

A combined sonochemical co-precipitaion method has been developed for the synthesis of a CoFe(2)O(4)-Cr(2)O(3)-SiO(2) magnetic nanocomposite. The synthesis involved the pre-synthesis of CoFe(2)O(4)-Cr(2)O(3) nanoparticles, which were subsequently coated with SiO(2) by treatment with tetraethyl orthosilicate. It was ob…

Magnetic Properties and Synthesis of FerritesIron oxide chemistry and applicationsPigment Synthesis and Properties

Fabrication of organogels composed from carbon nanotubes through a supramolecular approach

Ye Tian、Li Zhang、Pengfei Duan 等 7 位作者2010-01-01New Journal of Chemistry

A new organogelator, N,N′-bis (octadecyl)-L-(1-pyrenebutyric acid)-glutamic diamide (LPG), was designed and its interaction with pristine single-walled carbon nanotubes (SWNTs) in the gel state was investigated. It was found that LPG can form organogels with various kinds of organic solvents. Although SWNT itself is d…

Lipid Membrane Structure and BehaviorSupramolecular Self-Assembly in MaterialsPolydiacetylene-based materials and applications

Charge stabilisation by dimer formation of an endcapped thiophene tetramer—an in situ NMR spectroelectrochemical study

Sabrina Klod、Kinga Haubner、E. Jähne 等 4 位作者2010-01-01Chemical Science

The role of dimers in the charge stabilisation of 5,5′′′-dicyano-3,3′′-dibutyl 2,2′:5′,2′′:5′′,2′′′-quaterthiophene (DCNDBQT) via an electrochemical reaction is studied in detail by in situ NMR spectroelectrochemistry. Among the two oxidation steps the first was found to be reversible while the second is completely ir…

Organic Electronics and PhotovoltaicsConducting polymers and applicationsMolecular Junctions and Nanostructures

Nonstoichiometry and hole doping in NiO

J. M. Osorio-Guillén、Stephan Lany、Alex Zunger 等 5 位作者2010-01-01AIP conference proceedings

We have study by means of DFT+U and thermodynamic calculations the doping response of the p‐type transparent oxide NiO. We have found from the calculated defect formation enthalpies that Ni vacancy, not the O interstitial, is the main source of nonstoichiometry in NiO. On the other hand, the calculated free‐hole conce…

Gas Sensing Nanomaterials and SensorsSemiconductor materials and devicesTransition Metal Oxide Nanomaterials

Cointegration of event-related potential (ERP) signals in experiments with different electromagnetic field (EMF) conditions

Argiro E. Maganioti、Hountala D. Chrissanthi、Papageorgiou C. Charalabos 等 6 位作者2010-01-01Health

Due to their non-stationarity, ERP signals are difficult to study. The concept of cointegration might overcome this problem and allow for the study of the co-variability between whole ERP signals. In this context cointegration factor is defined as the ability of an ERP signal to co-vary with other ERP signals. The aim…

Solid-state spectroscopy and crystallographyNuclear Physics and ApplicationsEarthquake Detection and Analysis