Novel photoluminescent material by laccase-mediated polymerization of 4-fluoroguaiacol throughout defluorination
| Autor: | Eduardo Bárzana, José M. Hernández-Alcántara, Miquel Gimeno, Erick M. Alonso-Omlin, Juvencio López |
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| Rok vydání: | 2014 |
| Předmět: |
Laccase
chemistry.chemical_classification biology Process Chemistry and Technology Bioengineering Polymer biology.organism_classification Biochemistry Catalysis chemistry.chemical_compound Crystallinity chemistry Polymerization Polymer chemistry Acetone Melting point Methanol Trametes versicolor Nuclear chemistry |
| Zdroj: | Journal of Molecular Catalysis B: Enzymatic. 109:70-75 |
| ISSN: | 1381-1177 |
| Popis: | The enzymatic oxidative polymerization of 4-fluoroguaiacol (4-fluoro-2-methoxyphenol) was successfully achieved using laccase from Trametes versicolor in acetone or methanol and buffer (pH 5) mixture media with 1.5 mg mL −1 of dissolved oxygen throughout the reaction. The novel material displayed fluorescence with emissions in blue, green and red upon applied UV-light frequencies as determined by laser scanning confocal microscopy (LSCM) and photoluminescence spectroscopy (PS) on sample films. The products were fully characterized by NMR, FT-IR and MALDI-TOF analyses to demonstrate that the oxidative polymerization underwent by defluorination in a phenyl-oxy propagation. Powder X-ray diffraction spectra showed ca. 50% crystallinity and thermal analyses demonstrated high thermal resistance of the polymer, well above its melting point, which allowed for production of films by melting. |
| Databáze: | OpenAIRE |
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