Chitosan Film Containing an Iron Complex: Synthesis and Prospects for Heterocyclic Aromatic Amines (HAAs) Recognition
| Autor: | Natanna de A. Aguiar, Elisane Longhinotti, Dieric S. Abreu, Leandro Araujo da Costa, Izaura C.N. Diógenes, Maria A. S. da Silva, Tércio de F. Paulo |
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| Rok vydání: | 2017 |
| Předmět: |
Pyrazine
Polymers Iron Inorganic chemistry 02 engineering and technology 010402 general chemistry Electrochemistry 01 natural sciences Coordination complex Crystallinity chemistry.chemical_compound Heterocyclic Compounds Polymer chemistry Molecule Amines chemistry.chemical_classification Substitution reaction Chitosan Chemistry Hydrogen bond General Chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences 0210 nano-technology General Agricultural and Biological Sciences Hybrid material |
| Zdroj: | Journal of Agricultural and Food Chemistry. 65:1387-1394 |
| ISSN: | 1520-5118 0021-8561 |
| DOI: | 10.1021/acs.jafc.6b03742 |
| Popis: | Hybrid organic–inorganic materials have been seen as a promising approach to produce sensors for the detection and/or recognition of heterocyclic aromatic amines (HAAs). This work shows the synthesis of a hybrid film as a result of the incorporation of [Fe(CN)5(NH3)]3– into chitosan (CS); CS—[(CN)5Fe(NH3)]3–. The sensitivity of CS—[(CN)5Fe(NH3)]3– toward HAA-like species was evaluated by using pyrazine (pz) as probe molecule in vapor phase by means of electrochemistry and spectroscopic techniques. The crystallinity (SEM-EDS and XRD) decrease of CS—[(CN)5Fe(NH3)]3– in comparison to CS was assigned to the disturbance of the hydrogen bond network within the polymer. Such conclusion was reinforced by the water contact angle measurements. The results presented in this work indicate physical and intermolecular interactions, mostly hydrogen bond, between [Fe(CN)5(NH3)]3– and CS, where the complex is likely trapped in the polymer with its sixth coordination site available for substitution reactions. |
| Databáze: | OpenAIRE |
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