A5029937954- Photochromic and Fluorescence Chemistry
- CO2 Reduction Techniques and Catalysts
- Molecular Junctions and Nanostructures
- Advanced Photocatalysis Techniques
- Polyoxometalates: Synthesis and Applications
- Chemical Synthesis and Analysis
- Advanced Polymer Synthesis and Characterization
- Analytical Chemistry and Chromatography
- Click Chemistry and Applications
- Nanomaterials for catalytic reactions
- Innovative Microfluidic and Catalytic Techniques Innovation
- Covalent Organic Framework Applications
- Photopolymerization techniques and applications
- Polymer Surface Interaction Studies
- Electrocatalysts for Energy Conversion
- Organometallic Complex Synthesis and Catalysis
- Chemical and Environmental Engineering Research
- Adhesion, Friction, and Surface Interactions
- Advanced biosensing and bioanalysis techniques
- Catalytic Cross-Coupling Reactions
- Surfactants and Colloidal Systems
- Diatoms and Algae Research
- Radical Photochemical Reactions
- Nanocomposite Films for Food Packaging
- Mesoporous Materials and Catalysis
Queensland University of Technology
2018-2025
Institute of Catalysis and Petrochemistry
2024
Robert Bosch (Germany)
2024
Brisbane School of Theology
2020
Institute for the Future
2018
University of Stuttgart
2017
Stuttgart Observatory
2017
Institute of Textile Chemistry and Chemical Fibers
2015
Emulating nature's protein paradigm, single-chain nanoparticles (SCNP) are an emerging class of nanomaterials. Synthetic access to SCNPs is limited by ultralow concentrations, demanding reaction conditions, and complex isolation procedures after collapse. Herein, we exploit the visible light photodimerization styrylpyrene units as chain folding mechanism. Critically, their positioning along polymer creates a confined environment, increasing photocycloaddition quantum yields dramatically,...
We demonstrate that single-chain nanoparticles (SCNPs) - compact covalently folded single polymer chains can increase photocatalytic performance of an embedded catalytic center, compared to the comparable system in free solution. In particular, we degree compaction allows finely tailor activity, thus evidencing molecular confinement is a key factor controlling photocatalysis. Specifically, decorate linear parent with both photoreactive chalcone moieties as well Ru(bpy)3 centers. initially...
We introduce a single-chain nanoparticle (SCNP) system capable of catalyzing the photooxidation nonpolar alkenes up to three times more efficiently than an equivalent small-molecule photosensitizer at identical concentration. Specifically, we construct polymer chain constituted poly(ethylene glycol) methyl ether methacrylate and glycidyl which compact via multifunctional thiol-epoxide ligation functionalize with Rose Bengal (RB) in one pot reaction, affording SCNPs hydrophilic shell...
Polymer chains are grafted depending on their size onto solid interfaces, leading to a distortion of the surface distribution. We herein predict and quanitify this effect, which has critical consequences for functional polymer interface design.
We demonstrate that single‐chain nanoparticles (SCNPs) – compact covalently folded single polymer chains can increase photocatalytic performance of an embedded catalytic center, compared to the comparable system in free solution. In particular, we degree compaction allows finely tailor activity, thus evidencing molecular confinement is a key factor controlling photocatalysis. Specifically, decorate linear parent with both photoreactive chalcone moieties as well Ru(bpy)3 centers. initially...
Stable carbonized microspheres can readily be obtained with highly efficient char yields of close to 60% from photopolymers based on photo-induced Diels-Alder step growth polymerizations α-methoxy benzaldehyde and bismaleimide precursors. The current study carefully elucidates the chemical decomposition pathways during pyrolysis that yield excellent via thermogravimetric analysis (TGA) infrared (IR) spectroscopy. high low shrinkage 33% make Diels-Alder-type a promising system for next...
We exploit the wavelength dependence of [2 + 2] photocycloadditions and -reversions styrylpyrene to exert unprecedented control over photoreversible polymerization topology telechelic building blocks. Blue light (λ max = 460 nm) initiates a catalyst-free yielding high molar mass polymers (M n 60 000 g mol-1), which are stable at wavelengths exceeding 430 nm, yet highly responsive shorter wavelengths. UVB irradiation 330 induces rapid depolymerization affording linear oligomers, whereas...
The scope and mechanism of N-heterocyclic olefin-initiated polymerizations acrylic monomers is investigated, including deactivation pathways.
When grafting polymers onto surfaces, the reaction conditions critically influence resulting interface properties, including density and molar mass distribution (MMD) on surface. Herein, we show theoretically experimentally that application of poor solvents is beneficial for "grafting-to" approach. We demonstrate effect by poly(methyl methacrylate) chains silica nanoparticles in different compare MMD polymer solution before after via size exclusion chromatography (SEC). The shorter are...
Single-chain nanoparticles (SCNPs) are folded linear polymer chains inspired by the active state of natural enzymes. The current study addresses synthetic scalability issue SCNP via photoflow synthesis catalytically SCNPs.
We examine the wavelength-dependent efficiency of a set oxime ester based photoinitiators via photopolymerization action plots in methyl methacrylate (MMA), assessing polymer yield wavelength-by-wavelength after irradiation between 325 and 460 nm with constant number photons at each wavelength. systematically vary structural elements within three carbazole-based esters, i.e., 1, 1-(9-dodecyl-6-nitro-9H-carbazol-3-yl)ethan-1-one O-acetyl oxime, 2, O-(4-methoxybenzoyl) 3, O-(4-nitrobenzoyl)...
Herein, we introduce a comprehensive methodology to map the reactivity of photochemical systems on surfaces. The photoreactive groups in solution often departs from their corresponding absorption spectra. On surfaces, relationship between surface spectra and remains unexplored. Thus, herein, an o-methylbenzaldehyde tetrazole, as ligation partners for maleimide functionalized polymers, was investigated when reactive moieties are tethered surface. reaction tetrazole surfaces found proceed...
… is applied to a monoclinic Prussian white material, introducing an innovative concept for developing robust cathodes use in Na-ion batteries.In their Research Article (e202315371), Torsten Brezesinski, Ben Breitung, Yanjiao Ma and co-workers demonstrate that enhanced performance linked increased configurational entropy, proposed mechanism underscores the synergistic effects of suppressing phase transitions mitigating gas evolution. Electrocatalysis
report in their Research Article (e202313034) the anchoring of Fe species on highly curved surface S and N co-doped carbonaceous nanosprings for electrocatalytic oxygen reduction reaction.
The morphology of surfaces critically influences their interaction with the surrounding phase. Herein, we report a modular approach for synthesis organic-inorganic raspberry-, strawberry-, and seedpod-like particles to template porosity superficially porous particles. Divinylbenzene (DVB) microspheres were employed as core particles, which modified polar nonpolar polymer shells. Subsequently, silica nanoparticle templates covalently tethered said Further grafting shells subsequent removal...
We exploit the wavelength dependence of [2+2] photocycloadditions and -reversions styrylpyrene to exert unprecedented control over photoreversible polymerization topology telechelic building blocks. Blue light affords high molar mass polymers that are stable at wavelengths exceeding 430 nm yet highly responsive shorter wavelengths. UVB irradiation induces a rapid depolymerization yielding linear oligomers, whereas violet generates cyclic entities. Different colors thus allow switching...
Abstract Wir stellen ein Einzelkettennanopartikel (SCNP)‐System vor, welches bei identischer Konzentration die Photooxidation unpolarer Alkene bis zu dreimal effizienter katalysieren kann als äquivalenter niedermolekularer Photosensibilisator. Konkret haben wir SCNPs basierend auf Poly(ethylenglykol)methylethermethacrylat und Glycidylmethacrylat entwickelt, über multifunktionelle Thiol‐Epoxid‐Verknüpfungen in Kombination mit der Funktionalisierung Bengalrosa (RB) einer Eintopfreaktion...
Abstract In den letzten sechs Jahrzehnten haben sich gefaltete Polymerketten, sogenannte Einzelketten‐Nanopartikel (EKNPs), von dem bloßen Konzept intramolekular vernetzter Polymerketten zu maßgeschneiderten Nanoreaktoren entwickelt. Diese Entwicklung wurde durch eine Vielzahl Techniken und chemischen Verfahren zur Anpassung Analyse ihrer Morphologie Funktion unterstützt. monomolekularen Polymere bieten in einer breiten Palette Anwendungen ein vielversprechendes Potenzial. diesem Beitrag...
We exploit the wavelength dependence of [2+2] photocycloadditions and -reversions styrylpyrene to exert unprecedented control over photoreversible polymerization topology telechelic building blocks. Blue light affords high molar mass polymers that are stable at wavelengths exceeding 430 nm yet highly responsive shorter wavelengths. UVB irradiation induces a rapid depolymerization yielding linear oligomers, whereas violet generates cyclic entities. Different colors thus allow switching...