Premium
The synthesis, photophysical and thermal properties of new anthrapyrimidine colorants
Author(s) -
Me Sreejit R,
Shankarling Ganapati S
Publication year - 2011
Publication title -
coloration technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 1472-3581
DOI - 10.1111/j.1478-4408.2011.00330.x
Subject(s) - solvatochromism , thermogravimetric analysis , chemistry , photodegradation , solvent , elemental analysis , photochemistry , absorption (acoustics) , condensation , nuclear chemistry , materials science , organic chemistry , photocatalysis , catalysis , composite material , physics , thermodynamics
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.