Preparation of single chain nanoparticles via photoinduced radical coupling process
| Autor: | Gokhan Temel, Demet Karaca Balta, Irem Dashan, Binnur Aydogan Temel |
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| Přispěvatelé: | TEMEL, BİNNUR |
| Rok vydání: | 2019 |
| Předmět: |
Polymers and Plastics
Radical Organic Chemistry General Physics and Astronomy Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences 0104 chemical sciences Single chain folding Gel permeation chromatography chemistry.chemical_compound Ketyl chemistry Materials Chemistry Benzophenone Proton NMR Copolymer Molecule 0210 nano-technology |
| Zdroj: | European Polymer Journal. 113:183-191 |
| ISSN: | 0014-3057 |
| DOI: | 10.1016/j.eurpolymj.2019.01.054 |
| Popis: | This contribution introduces a straightforward method for preparing well-defined polymeric nanoparticles using radical coupling process of ketyl moieties resulted from triplet excitation of pendant benzophenone groups. In the first step, poly(styrene-co-chloromethylstyrene) is synthesized by thermally initiated controlled radical copolymerization technique and subsequently, pendant chloride groups undergo post-modification with 4–hydroxybenzophenone. Achieved well-defined side–chain benzophenone containing copolymers generate ketyl radicals in the presence of excess hydrogen donor molecule upon UV-light irradiation and intramolecularly crosslinked nanoparticles are formed by radical coupling process in dilute regime. Resulting single chain nanoparticles and intermediates are characterized by 1H NMR, gel permeation chromatography, differential scanning calorimetry, UV–Vis spectrometry and electron microscopy techniques. |
| Databáze: | OpenAIRE |
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