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Synthesis and Electronic Spectra of Some Monoazo Disperse Dyes Derived from N‐Methylindoline
Author(s) -
Hallas Geoffrey,
Ho Swee F
Publication year - 1982
Publication title -
journal of the society of dyers and colourists
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 0037-9859
DOI - 10.1111/j.1478-4408.1982.tb03615.x
Subject(s) - hypsochromic shift , ring (chemistry) , spectral line , chemistry , polymer , absorption (acoustics) , absorption spectroscopy , photochemistry , polymer chemistry , materials science , organic chemistry , fluorescence , optics , physics , composite material , astronomy
Several monoazo dyes suitable for transfer printing have been prepared from N‐methylindoline and compared with the corresponding derivatives of N‐methyl ‐12,3,4‐tetrahy‐droquinoline (kairoline). The presence of a five‐membered terminal ring system leads to diminished π‐interaction and results in modest hypsochromic and hypochromic shifts of the visible absorption band, relative to the analogous kairo‐line derivatives, together with some deterioration in light‐fastness properties on synthetic‐polymer fibres.