A5028215475- Advanced Polymer Synthesis and Characterization
- Advanced Photocatalysis Techniques
- Surfactants and Colloidal Systems
- TiO2 Photocatalysis and Solar Cells
- Conducting polymers and applications
- CO2 Reduction Techniques and Catalysts
- Photochromic and Fluorescence Chemistry
- Olfactory and Sensory Function Studies
- Polymer Surface Interaction Studies
- Electrocatalysts for Energy Conversion
- Supramolecular Self-Assembly in Materials
- Molecular Junctions and Nanostructures
- Nanoparticle-Based Drug Delivery
- Coral and Marine Ecosystems Studies
- Gold and Silver Nanoparticles Synthesis and Applications
- Electrochemical sensors and biosensors
- Catalytic Processes in Materials Science
- Nanomaterials for catalytic reactions
- Organic Electronics and Photovoltaics
- Polymer Nanocomposites and Properties
- Radical Photochemical Reactions
- Metal-Organic Frameworks: Synthesis and Applications
- Analytical Chemistry and Sensors
- Polydiacetylene-based materials and applications
- Chemistry and Chemical Engineering
Friedrich Schiller University Jena
2020-2024
Abstract Reproducibility and comparability of photocatalytic experiments are still challenging, owing to the large number experimental parameters their comprehensive documentation. To overcome this limitation, a modular, adaptable, extensible photoreactor platform is reported, which enables under well‐characterized, reproducible conditions. Comparability ensured by photonic characterization with chemical actinometry, radiometry open documentation incident photon fluxes in reaction vessels...
Polystyrene spheres are used as sacrificial template in different contents to introduce additional pores into hard-carbon structures from glucose for the application sodium-ion battery anodes.
Abstract Melanins are a class of conjugated biopolymers with varying compositions and functions, which have variety potential medical technical applications. Here, this work examines the polymers derived from phenolic monomers (catechol (CAT), levodopa (DOPA), homogentisic acid (HGA)), using selection different analytical chemistry techniques to compare their properties view understanding structure–function relations. The display measurable conductivity, electronic tuned by functional groups...
The energies of the frontier molecular orbitals determine optoelectronic properties in organic films, which are crucial for their application, and strongly depend on morphology supramolecular structure. impact latter two electronic energy levels relies primarily nearest-neighbor interactions, difficult to study due nanoscale nature heterogeneity. Here, an automated method is presented fabricating thin films with a tailored ratio surface bulk sites controlled extension domain edges, both used...
In this work, we present two bipyridine-annulated perylene tetracarboxylic ester (P-L) photocatalysts with PtCl2 and PdCl2. X-ray photoelectron spectroscopy showed that their binding energies match precisely the of respective M(bpy)Cl2 complexes. Cyclic voltammetry measurements complexes displayed additional reduction potentials upon metal insertion. Light-driven catalysis demonstrated both compounds are catalytically active, P-Pt outcompeting P-Pd a TON 186 over 48 h in presence ascorbic...
We herein report the fabrication of core-crosslinked, fluorescent, and surface-functionalized worm-like block copolymer micelles as drug delivery vehicles. The polyether-based diblock terpolymer [allyl-poly(ethylene oxide)-block-poly(2-ethylhexyl glycidyl ether-co-furfuryl ether)] was synthesized via anionic ring opening polymerization, self-assembly in water a selective solvent led to formation long filomicelles. Subsequent cross-linking realized using hydrophobic bismaleimides well...
Abstract Three triggers result in two measurable outputs from polymeric sensors: multiresponsive polyampholytic graft copolymers respond to pH‐value and temperature, as well the type concentration of metal cations therefore, allow transformation external into simply (cloud point temperature (T CP ) surface plasmon resonance (SPR) encapsulated silver nanoparticles). The synthesis relies on poly(dehydroalanine) (PDha) reactive backbone gives straightforward access materials with tunable...
Abstract Melanins are a class of biopolymers that widespread in nature, with diverse origins, compositions, and functions, their chemical optoelectronic properties render them potentially useful for application materials science various biotechnological applications. For patients alkaptonuria, the accumulation homogentisic acid (HGA) bodies is associated concomitant deposition pyomelanin, which pigment contains significant amounts polymerized HGA (polyHGA) bodily tissues patients. The...
Herein, we describe the preparation as well experimental and theoretical investigations of block copolymer micelles based on amphiphilic, pH-responsive copolymers featuring bipyridine ligands in side chain. Several well-defined polystyrene-block-poly(acrylic acid) (PS-b-PAA) polystyrene-block-poly((acrylic acid)-co-(2-(4-(4′-methyl-2,2′-bipyridyl))ethylacrylate)) (PS-b-P(AA-co-bpyEA)) were synthesized via nitroxide-mediated polymerization. Morphological different PS-b-PAA PS-b-P(AA-co-bpyEA)...
We herein demonstrate the use of block copolymer micelles as highly efficient colloidal photosensitizers in light-driven HER.
In current research, molecular light-driven catalytic units are linked to hierarchically structured soft matter matrices and used convert solar radiation into chemical reactivity for photocatalytic water splitting. This article describes the development of a simplified hydrogen evolution reaction that transfers selected results student laboratory in phenomenon-oriented manner. For this purpose, photocatalytically active system - consisting catalyst titanium dioxide, dye Eosin Y electron...
A stimuli-responsive (pH- and thermoresponsive) micelle-forming diblock copolymer, poly(1,2-butadiene)290-block-poly(N,N-dimethylaminoethyl methacrylate)240 (PB-b-PDMAEMA), was used as a polymer template for the in situ synthesis of silver nanoparticles (AgNPs) through Ag+ complexation with PDMAEMA blocks, followed by reduction bound sodium borohydride. successful AgNPs on PB-b-PDMAEMA micellar confirmed means UV-Vis spectroscopy transmission electron microscopy, wherein shape size were...
We herein report the preparation, characterization and (photo)catalytic investigation of block copolymer micelles featuring pendant bipyridyl rhodium complexes as NAD + reduction catalyst ruthenium polypyridyl photosensitizers.
Abstract The synthesis of 9‐methylanthracenyl glycidyl ether (AnthGE) as a crosslinkable monomer that can be applied in anionic ring opening polymerization is reported. Diblock terpolymers the composition methoxy‐poly(ethylene oxide)‐ block ‐poly(2‐ethylhexyl ether‐ co ‐9‐methylanthracenyl ether) (mPEO‐ b ‐P(EHGE‐ ‐AnthGE) with 10 to 24 wt% AnthGE are synthesized and characterized. Their micellization behavior, well their light‐induced core‐crosslinking via irradiation UV light (λ = 365 nm)...
This study highlights the potential of 3-chloro-2-hydroxypropyl methacrylate (ClHPMA) as a functional building block in nanostructured copolymer architectures.
We herein report the synthesis and block copolymerization <italic>via</italic> AROP of three glycidyl amine species (PiGA; OPGA, MPGA) with different hydrophobicity. Micelles formed from these copolymers respond to changes in pH H<sub>2</sub>O<sub>2</sub> concentration.
Front Cover: Article number 2100485 by Felix H. Schacher and co-workers describes the preparation of polyether-based, amphiphilic diblock terpolymers with pendant anthracene units. The crosslinking these units via light-induced [4+4]-cycloaddition is studied using UV-vis NMR spectroscopy. article further explains limited reversibility reaction if applied in aqueous micellar systems.
Abstract Over the past few decades, there has been remarkable progress in construction of self‐assemblies field supramolecular chemistry, such as micelles with precisely controlled and refined structures. One promising approach represents previously proposed concept Platonic micelles, which aggregation number ( N agg ) is discretized accordance vertexes regular polyhedra (i.e., solids), i.e., 4, 6, 8, 12, 20 units. Herein, attempt made to construct polymer using rigid persistent architecture...