SPECTRAL PROPERTIES OF AZA-15-CROWN-5 CONTAINING STYRYL DYES

Authors
ANTONOV L MATEEVA N MITEWA M STOYANOV S
Citation
L. Antonov et al., SPECTRAL PROPERTIES OF AZA-15-CROWN-5 CONTAINING STYRYL DYES, Dyes and pigments, 30(3), 1996, pp. 235-243
Citations number
20
Categorie Soggetti
Chemistry Applied
Journal title
Dyes and pigments → ACNP
ISSN journal
01437208
Volume
30
Issue
3
Year of publication
1996
Pages
235 - 243
Database
ISI
SICI code
0143-7208(1996)30:3<235:SPOACS>2.0.ZU;2-F
Abstract
The spectral properties of a series of styryl dyes containing the aza- 15-crown-5 macrocycle are investigated. Using absorption UV-Vis spectr oscopy the protonation and aggregation processes are studied and the c orresponding pK(a) values and dimerization constants K-D determined. O ligomer formation occurs in the presence of HClO4 or CIO42-, and a sch eme describing these processes is suggested.