Alternated π-conjugated polymers based on a 1,2-diiminocyclohexane chiral unit for nitroaromatics sensing
| Autor: | Joël J. E. Moreau, Simon Clavaguera, Françoise Serein-Spirau, Olivier Dautel, Christophe Méthivier, Eric Pasquinet, Florian Veignal, Pierre Montméat, Salem Wakim, Claire-Marie Pradier, Lionel Hairault, Jean-Pierre Lère-Porte |
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| Rok vydání: | 2009 |
| Předmět: |
chemistry.chemical_classification
Analyte Polymers and Plastics Chemistry Organic Chemistry Stacking Infrared spectroscopy 02 engineering and technology Polymer Conjugated system 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences Fluorescence 0104 chemical sciences Materials Chemistry Organic chemistry Molecule Thin film 0210 nano-technology |
| Zdroj: | Journal of Polymer Science Part A: Polymer Chemistry. 47:4141-4149 |
| ISSN: | 0887-624X |
| Popis: | The detection of 2,4-dinitrotoluene (DNT) by fluorescence quenching of a new class of polyimines consisting in π-conjugated segments regularly alternated with chiral C2 symmetry units has been studied for solutions and thin films. Their photophysical properties and their sensitivity towards DNT detection has been compared to those of a small model molecule incorporating the same π-conjugated segment. In solution, all the compounds exhibit the same photo-physical properties and sensitivity towards DNT detection. In contrast, for thin films, better performances are observed in static conditions for this new class of polyimines compared to the small model molecule. It seems that C2 symmetry units prevent from the stacking of the π-conjugated segments and provide in addition to high fluorescence signal an improved diffusion of the analyte inside the films. © 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 4141–4149, 2009 |
| Databáze: | OpenAIRE |
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