A5058070501- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Crystal Structures and Properties
- Inorganic Fluorides and Related Compounds
- Solid-state spectroscopy and crystallography
- Crystal structures of chemical compounds
- Chemical Synthesis and Characterization
- Crystallography and molecular interactions
- Organometallic Compounds Synthesis and Characterization
- Metal-Organic Frameworks: Synthesis and Applications
- Luminescence Properties of Advanced Materials
- Inorganic Chemistry and Materials
- Advanced Condensed Matter Physics
- Magnetism in coordination complexes
- Metal complexes synthesis and properties
- Polyoxometalates: Synthesis and Applications
- Magnetic and transport properties of perovskites and related materials
- Mineralogy and Gemology Studies
- Multiferroics and related materials
- Glass properties and applications
- Catalysis and Oxidation Reactions
- Nuclear materials and radiation effects
- Chemical Thermodynamics and Molecular Structure
- Organometallic Complex Synthesis and Catalysis
- Asymmetric Hydrogenation and Catalysis
TU Wien
2016-2025
University of Vienna
2001-2023
University of Kentucky
2021
University of Aberdeen
2020-2021
ORCID
2020
Austrian Economics Center
2014-2019
University of Augsburg
2016
Lomonosov Moscow State University
2011
Universität Innsbruck
2008
Ludwig-Maximilians-Universität München
2005-2007
The novel methyl-substituted dicyanovinyl-capped quinquethiophenes 1-3 led to highly efficient organic solar cells with power conversion efficiencies of 4.8-6.9%. X-ray analysis single crystals and evaporated neat blend films gave insights into the packing morphological behavior compounds that rationalized their improved photovoltaic performance.
Abstract Efficient synthesis of a series terminally dicyanovinyl (DCV)‐substituted oligothiophenes, DCV n T 1–6, without solubilizing side chains synthesized via novel convergent approach and their application as electron donors in vacuum‐processed m‐i‐p‐type planar p‐i‐n‐type bulk heterojunction organic solar cells is described. Purification the products gradient sublimation yields thermally highly stable semiconducting materials single crystalline quality which allows for X‐ray structure...
X-ray investigations on single crystals of a series terminally dicyanovinyl-substituted quaterthiophenes and co-evaporated blend layers with C60 give insight into molecular packing behavior morphology, which are crucial parameters in the field organic electronics. Structural characteristics various levels length scales correlated photovoltaic performance bulk heterojunction small-molecule solar cells.
The molecular structure of a cyclic oligothiophene, C10T, has been determined by single-crystal X-ray analysis. exclusive syn-conformation all thiophene units as confirmed in the solid state and ring strain this macrocycle result its unusual optoelectronic properties. This does not only apply to neutral C10T but also oxidized states, demonstrated absorption ESR spectroscopy, supporting formation polaron-pair upon oxidation C10T2(·+) discussed for linear oligothiophenes. To best our...
The 15e square-planar complexes [Co(PCPMe-iPr)Cl] (2a) and [Co(PCP-tBu)Cl] (2b), respectively, react readily with NaBH4 to afford [Co(PCPMe-iPr)(η2-BH4)] (4a) [Co(PCP-tBu)(η2-BH4)] (4b) in high yields, as confirmed by IR spectroscopy, X-ray crystallography, elemental analysis. borohydride ligand is symmetrically bound the cobalt center η2-fashion. These compounds are paramagnetic effective magnetic moments of 2.0(1) 2.1(1) μB consistent a d7 low-spin system corresponding one unpaired...
In the present study Mo(0) and W(0) complexes [M(PNP)(CO)
Dirutile-type CoTeO 4 exhibits a bandgap of ∼2.42 eV as determined by optical absorption spectroscopy.
The title compound, {[Ni 5 (C 2 H 3 O ) 8 (OH) ]·2.60H O} n or [Ni (OAc) (OAc is the acetate anion, C ), represents a hydrated basic acetate. Its asymmetric unit comprises half of formula unit, with one three unique Ni II cations situated at an inversion centre. atoms are in octahedral coordination environments by acetato ligands and OH group. different kinds bridging modes (μ , 2×μ μ 4 for ligands; group) lead to formation framework structure hydrophobic channels extending parallel main...
As part of crystal growth experiments on transition metal oxidotellurates using chemical vapor transport reactions or hydrothermal conditions, single crystals NiIITeVIO4 and CuIITeIV2O5 were obtained for the first time in form new modifications, as revealed by structure determinations from X-ray data. In course these investigations, model only phase reported so far (from now named α-) was corrected. Both α-(space group P21/c, Z = 2) β-polymorph (space I41/a, 8) can be considered derivatives...
Double perovskites represent a class of materials with promising fundamental properties and broad spectrum potential applications. However, the wide bandgap energy in double presents hindrance to further enhancement their photovoltaic efficiency. In present study, high-pressure technique is employed tune perovskite Co3TeO6 (CTO). A giant reduction ∼37% from 2.93 1.85 eV has been observed after treatment. Subsequent synchrotron-based X-ray diffraction Raman spectroscopy results reveal that...
The magnetic and electrical properties of Co$_3$TeO$_6$ single-crystals with corundum related structure reveal a magnetic-field induced polarization below 21 K. A sharp peak in the specific heat at \approx 18 K indicates reconstructive-type first-order phase transition. From second-harmonic generation (SHG) measurements breaking inversion symmetry is evident point-group was determined as m. temperature dependence polarizations are discussed light SHG results.
The complex metal oxides Ni2InSbO6 (NISO) and Ni2ScSbO6 (NSSO) have been prepared in form of polycrystalline powders by a solid state reaction route. crystal structure magnetic properties the compounds were investigated using combination X-ray neutron powder diffraction, electron microscopy, calorimetric measurements. adopt trigonal structure, space group R3, corundum related Ni3TeO6 (NTO) type. Only one octahedral Ni positions (Ni(2)) NTO was found to be occupied In (Sc). has...
Homo- and heteropentanuclear coordination compounds [MZn(4)Cl(4)(L)(6)] (M(II) = Zn, Fe, Co, Ni, or Cu; L 5,6-dimethyl-1,2,3-benzotriazolate) were prepared containing mu(3)-bridging N-donor ligands (1,2,3-benzotriazolate), which are structurally related to the fundamental secondary building unit of Metal-organic Framework Ulm University-4 (MFU-4). The unique topology these T(d)-symmetrical is characterized by nonplanar K(3,3) graph, introduced into graph theory mathematician Casimir...
Abstract The convergent synthesis of a series acceptor–donor–acceptor (A‐D‐A) type dicaynovinyl (DCV)‐substituted oligoselenophenes DCV n S ( = 3–5) is presented. Trends in thermal and optoelectronic properties are studied, dependence on the length conjugated backbone. Optical measurements reveal red‐shifted absorption spectra electrochemical investigations show lowering lowest unoccupied molecular orbital (LUMO) energy levels for compared to corresponding thiophene analogs T. As...
The possibility to use Mn2+ co-doping modify the emission properties of Pr3+-based quantum cutting phosphors—i.e., phosphors that emit one UV and visible photon for each absorbed vacuum (VUV) photon—into two photons, was studied experimentally. In this respect a luminescence excitation study, using synchrotron radiation, between 500 50 nm Pr3+ impurities in SrAlF5, CaAlF5, NaMgF3 performed. Excitation into 4f5d excited states results photons from S01 state followed by P03 with an internal...