Novel conjugated polyelectrolytes based on polythiophene bearing phosphonium side groups
| Autor: | Jiří Vohlídal, Jan Svoboda, Sviatoslav Hladysh, Jiří Zedník, David Vrbata, Dmitrij Bondarev |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
chemistry.chemical_classification
Polymers and Plastics Organic Chemistry Solvatochromism General Physics and Astronomy 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Conjugated Polyelectrolytes Polyelectrolyte 0104 chemical sciences chemistry.chemical_compound chemistry Bromide Polymer chemistry Materials Chemistry Polythiophene Phosphonium 0210 nano-technology Luminescence |
| Zdroj: | European Polymer Journal. 83:367-376 |
| ISSN: | 0014-3057 |
| DOI: | 10.1016/j.eurpolymj.2016.07.019 |
| Popis: | The synthesis and photophysical properties of poly{3-[6-(triethylphosphonium)hexyl]-thiophene-2,5-diyl bromide} and poly{3-[6-(triphenylphosphonium)hexyl]-thiophene-2,5-diyl bromide} are reported in the present contribution. Three various polymer precursors (poly[3-(6-bromohexyl)thiophene-2,5-diyl]s) with molecular weights 7.2, 11.8 and 13.2 kg mol−1 respectively and head to tail regioregularity from 62% to 94% were prepared and consecutively transformed into the corresponding polyelectrolytes by a simple quaternization reaction with appropriate phosphines. Synthesized polyelectrolytes exhibited solvatochromism. Detailed aggregation experiments via changing water/DMSO ratio have been performed. Photoluminiscence spectra of the polyelectrolyte solutions indicate that the emission maxima are red-shifted gradually with the increasing solvent polarity. Fluorescence quenching has been studied by interaction with model quenchers: K4[Fe(CN)6] and K3[Fe(CN)6] in water using Stern-Volmer methodology. |
| Databáze: | OpenAIRE |
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