Extended conjugation in di- and tri-arylmethane dyes. Part 5. Vinylogues and ethynologues of Victoria Blue

Authors
Guinot, SGR Hepworth, JD Wainwright, M
Citation
Sgr. Guinot et al., Extended conjugation in di- and tri-arylmethane dyes. Part 5. Vinylogues and ethynologues of Victoria Blue, DYE PIGMENT, 47(1-2), 2000, pp. 129-142
Citations number
43
Categorie Soggetti
Chemical Engineering
Journal title
DYES AND PIGMENTS
ISSN journal
01437208 → ACNP
Volume
47
Issue
1-2
Year of publication
2000
Pages
129 - 142
Database
ISI
SICI code
0143-7208(200010/11)47:1-2<129:ECIDAT>2.0.ZU;2-M
Abstract
Novel vinylogues and ethynologues of the naphthyldiphenylmethane dye system have been synthesised and their spectral parameters measured. The extended conjugation brings about red shifts of the absorption bands relative to th e parent dyes. Although this effect is generally greater for the alkynyl de rivatives, the vinylogue is better able to accommodate the peri-hindrance a ssociated with the 4-dimethylamino-1-naphthyl group. (C) 2000 Elsevier Scie nce Ltd. All rights reserved.