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Your search keyword '"Artur R. Stefankiewicz"' showing total 3 results
Start Over Author "Artur R. Stefankiewicz" Journal chemical communications
3 results on '"Artur R. Stefankiewicz"'

1. Self-assembly of a fluorescent hydrogen-bonded capsule based on an amino-acid functionalised tetraphenylethylene

Author

Anna Brzechwa-Chodzyńska, Grzegorz Markiewicz, Piotr Cecot, Jack Harrowfield, and Artur R. Stefankiewicz

Subjects
Materials Chemistry, Metals and Alloys, Ceramics and Composites, General Chemistry, Catalysis, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials
Abstract

The self-assembly of an amino-acid substituted tetraphenylethylene (TPE) into a hydrogen-bonded dimeric capsule and an aggregate is reported. Depending on the conditions applied they exhibit bluish photoluminescence with QYs up to 24%.

Published
2023
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2. Self-organization of amino-acid-derived NDI assemblies into a nanofibrillar superstructure with humidity sensitive n-type semiconducting properties

Author

Anna Walczak, Artur R. Stefankiewicz, Artur Ciesielski, Marco A. Squillaci, Paolo Samorì, and Grzegorz Markiewicz

Subjects
chemistry.chemical_classification, Materials science, Atomic force microscopy, Metals and Alloys, Nanotechnology, 02 engineering and technology, General Chemistry, Nuclear magnetic resonance spectroscopy, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Catalysis, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Amino acid, Supramolecular polymers, Crystallography, chemistry, Polymerization, Materials Chemistry, Ceramics and Composites, 0210 nano-technology, Superstructure (condensed matter)
Abstract

The hierarchical self-assembly of l-tyrosine substituted naphthalenediimide has been explored in solution by NMR spectroscopy and in the solid-state by atomic force microscopy. Spontaneous non-covalent polymerisation led to the formation of a three-dimensional fibre-like supramolecular polymer with n-type semiconducting properties.

Published
2017
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3. Photoisomerisation and light-induced morphological switching of a polyoxometalate–azobenzene hybrid

Author

Artur R. Stefankiewicz, Artur Ciesielski, Violetta Patroniak, Agostino Galanti, Grzegorz Markiewicz, Paolo Samorì, and Dawid Pakulski

Subjects
Materials science, Absorption spectroscopy, Scanning electron microscope, Metals and Alloys, Cationic polymerization, Ionic bonding, 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, Photochemistry, 01 natural sciences, Catalysis, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, chemistry.chemical_compound, Dynamic light scattering, Azobenzene, chemistry, Polyoxometalate, Materials Chemistry, Ceramics and Composites, Surface modification, 0210 nano-technology
Abstract

The functionalization of a spherical Keplerate-type polyoxometalate {Mo72V30} with a cationic azobenzene surfactant has been achieved through ionic self-assembly. The photoisomerisation reaction of this complex, which emerges in a light-triggered aggregation–disaggregation process, has been followed by 1H NMR spectroscopy, dynamic light scattering, absorption spectroscopy and scanning electron microscopy analyses.

Published
2017
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