A5078135986- Synthetic Organic Chemistry Methods
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Organometallic Complex Synthesis and Catalysis
- Advanced Polymer Synthesis and Characterization
- Chemical Synthesis and Analysis
- biodegradable polymer synthesis and properties
- Analytical Chemistry and Sensors
- Asymmetric Hydrogenation and Catalysis
- Catalytic Cross-Coupling Reactions
- Conducting polymers and applications
- Synthesis and properties of polymers
- Organic Electronics and Photovoltaics
- Organic Light-Emitting Diodes Research
- Fuel Cells and Related Materials
- Luminescence and Fluorescent Materials
- Metal complexes synthesis and properties
- Lanthanide and Transition Metal Complexes
- Gas Sensing Nanomaterials and Sensors
- Crystallography and molecular interactions
- Chemical Synthesis and Reactions
- Click Chemistry and Applications
- Model-Driven Software Engineering Techniques
- Advanced Battery Materials and Technologies
- Pickering emulsions and particle stabilization
Graz University of Technology
2016-2025
Christian Doppler Laboratory for Thermoelectricity
2020-2024
Nawi Graz
2015-2018
University of Warsaw
2015
University of Chemistry and Technology, Prague
2015
Varta Micro Innovation (Austria)
2013
Montanuniversität Leoben
2011
University of St Andrews
2010-2011
University of Graz
2008
TU Wien
1997-2002
Disproportionation of superoxide to peroxide and O<sub>2</sub> generates the highly reactive singlet O<sub>2</sub>, which needs be avoided for reversible metal–O<sub>2</sub> batteries.
Abstract Summary: The success of metathesis chemistry techniques has sparked a tremendous interest in polymer and material chemistry. This contribution provides an overview the state art ring opening polymerisation (ROMP). It is intended to provide reader with useful information on interplay initiators, monomers, reaction conditions, thus aiding chemists utilise ROMP toolbox. Prominent illustrative examples from current research are given article. “ROMP toolbox”. magnified image
Even though organic light-emitting device (OLED) technology has evolved to a point where it is now an important competitor liquid crystal displays (LCDs), further scientific efforts devoted the design, engineering and fabrication of OLEDs are required for complete commercialization this technology. Along these lines, present work reviews essentials OLED putting special focus on general working principle single multilayer OLEDs, fluorescent phosphorescent emitter materials as well transfer...
For the series of para-substituted triphenylamines, optimized geometries, HOMO and LUMO energy levels, ionization potentials Ip, reorganization energies for hole transport λ+, frontier orbital contours have been calculated by means ab initio computations. Relationships between them Hammett parameter are presented. According to calculations, electron releasing substituents increase TPA, while withdrawing ones decrease it. This behavior is reflected in subsequent decreasing increasing...
Abstract Aprotic sodium–O 2 batteries require the reversible formation/dissolution of sodium superoxide (NaO ) on cycling. Poor cycle life has been associated with parasitic chemistry caused by reactivity electrolyte and electrode NaO , a strong nucleophile base. Its can, however, not consistently explain side reactions irreversibility. Herein we show that singlet oxygen ( 1 O forms at all stages cycling it is main driver for chemistry. It was detected in‐ ex‐situ via trap selectively...
This review article summarises the academic work in fields of initiator development, polymer chemistry and physics, composites, self-healing novel processing opportunities macro-as well as microporous materials.
Singlet oxygen (1 O2 ) causes a major fraction of the parasitic chemistry during cycling non-aqueous alkali metal-O2 batteries and also contributes to interfacial reactivity transition-metal oxide intercalation compounds. We introduce DABCOnium, mono alkylated form 1,4-diazabicyclo[2.2.2]octane (DABCO), as an efficient 1 quencher with unusually high oxidative stability ca. 4.2 V vs. Li/Li+ . Previous quenchers are strongly Lewis basic amines too low stability. DABCOnium is ionic liquid,...
The complexes RuTp(PPh3)2Cl (1) and RuTp(PPh3)(py)Cl (2) catalyze the dimerization of HC⋮CR, where R = Ph, SiMe3, n-Bu, t-Bu, to give 1,4- 2,4-disubstituted butenynes with both conversion selectivity strongly depending on alkyne substituent, catalytic precursor is neutral vinylidene complex RuTp(PPh3)(Cl)(=CCHR). hydride RuTp(PPh3)2H (3) exhibits same activity as 1 2.
The synthesis and catalytic reactivity of a variety new ruthenium complexes the tris(pyrazolyl)borate ligand (HB(pz)3) are reported in this paper. From parent complex Ru(HB(pz)3)(COD)X (X = Cl, Br) cationic derivatives [Ru(HB(pz)3)(COD)L]+ (L H2O, CH3CN, pyridine, dmso) have been obtained by treatment with 1 equiv AgCF3SO3 CH2Cl2 solutions L. Displacement COD from these latter has accomplished boiling dmf ligands L2 Ph2PCH2PPh2 (dppm), Ph2PCH2CH2NMe2 (pn), Me2NCH2CH2NMe2 (tmeda) as well L...
Inverse electron demand Diels-Alder additions (iEDDA) between 1,2,4,5-tetrazines and olefins have recently found widespread application as a novel 'click chemistry' scheme mild technique for the modification of materials. Norbornenes are, due to their straightforward synthetic availability, especially interesting in latter context. Therefore, reactivity different norbornene-based compounds was compared with unsubstituted norbornene other alkenes using UV-vis measurements determination...
The synthesis, characterization, and ROM polymerization activity of two ruthenium-based metathesis initiators bearing chelating carbene ligands with imine functionalities N-heterocyclic are presented.
The synthesis, characterization, and catalytic activity of a series unprecedented ruthenium-based metathesis catalysts bearing cis-dichloro arrangement, an N-heterocyclic carbene, chelating carbene ligand derived from 2-vinylbenzaldehyde or 2-vinylbenzoic acid ester are presented.
A simple formulation of a stable high internal phase emulsion dicyclopentadiene which is cured by using properly selected ring opening metathesis polymerization initiators yields highly porous monolithic materials with paramount mechanical properties and the possibility easy functionalisation.
Surfactant stabilized emulsions of dicyclopentadiene and 50%, 60%, 70% or 80% water were cured using ring opening metathesis polymerisation. All formulations gave open porous architectures featuring excellent mechanical properties which change upon oxidation.
The cationic pyridine adduct of a ruthenium complex bearing chelating benzylidene and an N-heterocyclic carbene was identified as intermediate during the activation cis dichloro species novel triggering concept for olefin metathesis catalysts based on disclosed.
Metal-organic frameworks (MOFs) nanoparticles in combination with a nonionic surfactant (Pluronic L-121) are used to stabilize dicyclopentadiene (DCPD)-in-water high internal phase emulsions (HIPEs). The resulting HIPEs containing the MIL-100(Fe) (MIL: Materials of Institut Lavoisier) at interface between oil- and water-phases then cured, 100 μm thick, fully open, hierarchically porous hybrid membranes obtained. properties MIL-100(Fe)@pDCPD polyHIPE characterized it is found that up 14 wt%...
Reducing the surfactant amount below generally accepted values in polyHIPE chemistry allowed for distinctly improving mechanical properties of ROMP derived HIPE templated poly(dicyclopentadiene) without compromising open cellular structure scaffold rendering preparation a ductile polymer foam with 80% porosity and Young's modulus 110 MPa possible.
Zinc(II) oxide nanoparticles were used for the stabilization of dicyclopentadiene (DCPD)–water-based high internal phase emulsions (HIPEs), which subsequently cured using ring-opening metathesis polymerization (ROMP). The morphology resulting ZnO-pDCPD nanocomposite foams was investigated in correlation to nanoparticle loading and surface chemistry. While hydrophilic ZnO found be unsuitable stabilizing HIPE, oleic acid coated, yet hydrophobic effective HIPE stabilizers, yielding polymer with...
The first example of an aa–bb-type nucleophile-mediated oxa-Michael addition polymerisation reaction is reported.
Coordination polymers of zinc(II) with three readily accessible 3-(1H-imidazol-1-yl)propanoate ligands are prepared by combining aqueous solutions the and salts, resulting in a precipitation respective coordination polymers. While sodium 3-(2-phenyl-1H-imidazol-1-yl)propanoate initially yield amorphous precipitates that can be converted to crystalline materials upon prolonged heating, use 3-(2-methyl-1H-imidazol-1-yl)propanoate results immediate formation polymer. All were structurally...