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Electronic structure of spatially aligned graphene nanoribbons on Au(788).
High-resolution direct and inverse photoemission spectroscopy of occupied and unoccupied states allows the determination of the energetic position and momentum dispersion of electronic states revealing the existence of band gaps of several electron volts for straight 7-armchairs, 13-armchair, and chevron-type GNRs in the electronic structure.
Tank circuit model applied to particles in a Penning trap
The equivalent circuit model is used to describe analytically the coupling process of the center of mass motion of a cloud of particles in a Penning trap. From the response of this coupled circuit to
Micron-sized [6,6]-phenyl C61 butyric acid methyl ester crystals grown by dip coating in solvent vapour atmosphere: interfaces for organic photovoltaics.
Due to its structural precision on the macroscopic scale, the PCBM crystals appear as ideal interface to perform fundamental photophysical studies in electron-acceptor and -donor blends, as well as workbench for unravelling the architecture vs. function relationship in organic solar cells prototypes.
Nanostructuring discotic molecules on ITO support.
An imprinting technique using anodized alumina oxide (AAO) hard templates as stamps is presented, showing an exact pattern transfer of the AAO structures into a solution processable hexa-peri-hexabenzocoronene (HBC), a discotic small molecule with acrylate moieties which is polymerized in situ.
Tuning the deposition of molecular graphene nanoribbons by surface functionalization.
We show that individual, isolated graphene nanoribbons, created with a molecular synthetic approach, can be assembled on functionalised wafer surfaces treated with silanes. The use of surface groups
Fast and slow dynamics in a discotic liquid crystal with regions of columnar order and disorder.
Aromatic disk-shaped molecules tend to self-organize into a herringbone packing where the disks are inclined at angles ±θ with respect to the axis of the column, which can introduce defects between stacks of limited length.
Electronic characterization of silicon intercalated chevron graphene nanoribbons on Au(111).
Post-growth silicon intercalation is used to unambiguously access nanoribbons' energy position of their electronic frontier states and finds a band gap of 2.4 eV in agreement with first-principles calculations.
Probing the band alignment in rectifying SrIrO3/Nb:SrTiO3 heterostructures
We have examined the band alignment in SrIrO3/Nb:SrTiO3 (001) heterojunctions at room temperature using three independent techniques: current–voltage and capacitance–voltage measurements and internal
First-Principles Modeling of the Polycyclic Aromatic Hydrocarbons Reduction
Density functional theory modeling of the reduction of realistic nanographene molecules (C42H18, C48H18, and C60H24) by molecular hydrogen evidence of the presence of limits in the hydrogenation pr...