| Titre : |
The synthesis, photophysical and thermal properties of new anthrapyrimidine colorants |
| Type de document : |
texte imprimé |
| Auteurs : |
Sreejit R. Menon, Auteur ; Ganapati S. Shankarling, Auteur |
| Année de publication : |
2011 |
| Article en page(s) : |
p. 383-389 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Anthrapyrimidine
Colorants
Diméthylsulfoxyde
Photostabilité
Polypropylène
Solvatochromisme
Teinture -- Fibres textiles synthétiques
|
| Index. décimale : |
667.3 Teinture et impression des tissus |
| Résumé : |
The thermal and photostability of novel anthrapyrimidine-containing colorants obtained by the condensation of various substituted aromatic amines with 6-bromo-7H-benzo[e]perimidin-7-one are described. The colorants were characterised by proton nuclear magnetic resonance, elemental analysis and mass spectra. Thermogravimetric analysis showed that these colorants are thermally stable up to 250 °C. The UV–visible absorption spectra of the colorants were studied in solvents of differing polarity; the colorants exhibited slight positive solvatochromism. The photostability studies in dimethyl sulphoxide solvent were recorded by monitoring photodegradation of the colorants spectrophotometrically using a standard calibration curve. All the colorants exhibited excellent photostability. The light fastness study of two colorants in polypropylene showcases their ability as useful colorants for plastics. |
| Note de contenu : |
- EXPERIMENTAL : Materials and analysis - Synthesis of 1-amino-4-bromo-anthraquinone - Synthesis of 6-bromo-7H-benzo[e]perimidin-7-one - Synthesis of colorants (5a-5e)
- RESULTS AND DISCUSSION : Synthesis of anthrapyrimidine colorants - Photophysical properties of colorants 5a-5e - Thermal stability of colorants 5a-5e - Photostability of colorants 5a-5e - Light fastness of colorants 5c and 5e extruded with polypropylene |
| DOI : |
10.1111/j.1478-4408.2011.00330.x |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12652 |
in COLORATION TECHNOLOGY > Vol. 127, N° 6 (2011) . - p. 383-389
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