ISSN:
0018-019X
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
On the Influence of the Donor Part of the Chromophor of Dimethinmerocyanine Dyes upon the Aggregation Tendency in Aqueous SolutionA series of novel long-chain alkyl-dimethinmerocyanine dyes containing the (rhodaninyl)benzenesulfonate or (cyanoacetoxy)alkanesulfonate group is synthesized in good yield and their aggregation tendency in H2O and/or in various organic solvents/H2O mixtures without addition of salt investigated. Except for the merocyanine 2h, all dyes give J-aggregation in H2O or in organic solvents containing H2O. The Lambert-Beer rule is proved for the solution of 3a(4) in H2O. The degree of aggregation of 3a(4) in H2O is investigated by ultracentrifugation. The kind of the aggregation (J- or H-type) can be found out very quickly by dissolving the dye in H2O with the help of ultra-sound.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/hlca.19870700616
