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Recently Published Issues
April 04, 2013
VIP: Angle-Resolved Strong-Field Ionization of Polyatomic Molecules: More than the Orbitals Matters
Oumarou Njoya, Spiridoula Matsika and Thomas Weinacht
Strong-field ionization plays a critical role in attosecond pulse generation and molecular imaging. It has been shown to be sensitive to the shape of molecular orbitals, and can therefore be used as a tool for studying time-dependent changes to molecular structure. Using a pump-probe scheme to initiate and capture excited-state dynamics, the authors discuss three molecules whose orbital structures are the same but whose angle and time-dependent yields differ significantly. This suggests that the angle dependence of strong-field molecular ionization is sensitive to more than the shape of the molecular orbital from which an electron is removed.
Received December 14, 2012, published online March 20, 2013, DOI: 10.1002/cphc.201201045 – read now.
Recently Published Articles
- X-Ray Photoelectron Spectroscopy for Characterization of Bionanocomposite Functional Materials for Energy-Harvesting Technologies
Dr. Kateryna Artyushkova and Prof. Plamen Atanassov
Article first published online: 22 MAY 2013 | DOI: 10.1002/cphc.201300037
See beneath the surface! Surface analysis of biologically relevant composites leads to an improved understanding of the chemistry of nanocomposite constituents and the interactions between them (see picture).
- A Versatile Approach towards the Compaction, Decompaction, and Immobilization of DNA at Interfaces by Using Cyclodextrins
Dr. Alfredo González-Pérez and Prof. Juan M. Ruso
Article first published online: 17 MAY 2013 | DOI: 10.1002/cphc.201300234
Die another DNA: The decompaction of the DNA/hexadecyltrimethylammonium bromide (CTAB) complex is strongly influenced by the concentration of β-cyclodextrin (CD) and by the reaction temperature, owing to a subtle balance between the hydration of the complex and the lower compressibility of the native structures. Moreover, the formation of self-assembled layers of β-CD/CTAB complexes on glass or mica surfaces facilitates the immobilization of DNA, either in its coil or globule conformations (see picture).
- Photoinduced Biphasic Hydrogen Evolution: Decamethylosmocene as a Light-Driven Electron Donor
Peiyu Ge, Astrid J. Olaya, Dr. Micheál D. Scanlon, Dr. Imren Hatay Patir, Heron Vrubel and Prof. Hubert H. Girault
Article first published online: 17 MAY 2013 | DOI: 10.1002/cphc.201300122
A weak but productive donor: Mechanistic and kinetic insights into light-driven biphasic hydrogen evolution in the presence of the weak electron donor decamethylosmocene , which on white-light illumination produces an excited-state species that can reduce organically solubilized protons (see picture), are obtained by gas chromatographic, cyclic voltammetric, and UV/Vis and 1H NMR spectroscopic analysis.
- Direct Observation of the Electroadsorptive Effect on Ultrathin Films for Microsensor and Catalytic-Surface Control
Prof. Dr. Theodor Doll, Dr. Juan J. Velasco-Velez , Dr. Dirk Rosenthal, Dr. Jonathan Avila and Prof. Dr. Victor Fuenzalida
Article first published online: 17 MAY 2013 | DOI: 10.1002/cphc.201201013
Time-series XPS measurements in combination with conductivity analysis on the adsorption of NO2/O2 on compact and porous SnO2 thin films (see picture) allow for the direct observation of the electroadsorptive effect. Diffusion of NOx species to the surface during the experiment is clearly seen for the porous layers.
- A Chemical Lift-off Process: Removing Non-Specific Adsorption in an Electrochemical Epstein–Barr Virus Immunoassay
Lutz Stratmann, Dr. Magdalena Gebala and Prof. Wolfgang Schuhmann
Article first published online: 16 MAY 2013 | DOI: 10.1002/cphc.201300029
The anti-protein lift-off: An ester group containing a self-assembled monolayer is used in an electrochemical Epstein–Barr virus immunoassay with native recombinant antigens and electrochemical readout. The electrode interface is adapted to microstructuring using scanning electrochemical microscopy. A chemical lift-off process based on the hydrolysis of the ester groups is proposed to remove non-specifically adsorbed molecules.