EventsThe 15th International Electronic Conference on Synthetic Organic Chemistry
Event submissions
Published
with-doi10.3390/ecsoc-15-00640
This submission belongs to the session a. General Organic Synthesis of the event The 15th International Electronic Conference on Synthetic Organic Chemistry
Published date
31 Oct, 2011
Citation
Georgeta Maria Grad, Simona Gabriela Grad, Maria Elena Grad, Synthesis, Properties and Trichromatic Study of New Dyes with Stilbenic Structure, in Proceedings of The 15th International Electronic Conference on Synthetic Organic Chemistry, 1 November–30 November 2011, MDPI: Basel, Switzerland, doi: 10.3390/ecsoc-15-00640
Share
Email
Facebook
Twitter
LinkedIn

Synthesis, Properties and Trichromatic Study of New Dyes with Stilbenic Structure

Georgeta Maria Grad 1
Simona Gabriela Grad 2
Maria Elena Grad 2
1. niversity of Medicine and Pharmacy Victor Babeş Timişoara
2. Institute of Chemistry Timişoara of the Romanian Academy
Abstract
Two new symmetrical disazo direct dyes containing 4,4\'-diaminostilbene-2,2\'disulphonic acid as middle component and 3-bromosalicylanilide and 4-bromosalicylanilide as coupling components were synthesized. The dyes were characterised by TLC, VIS, FT/IR, 13C-NMR spectroscopy, and HPLC technique. The colour, spectrophotometric study of the two disazo stilbene dyes with symmetrical structure was performed using the CIE 1976 (CIELAB) uniform colur space parameters, under the CIE (Commission Internationale d\'Eclairage) recommended illuminants: D65 (natural day light), A (tungsten light), F2 (fluorescent light) and the standard 10° observer respectively. The colour differences (ΔEab*) and (ΔECMC) were calculated against one standard, revealing a high colouring power for the two new studied dyes.
Keywords
4,4\'-diaminostilbene-2,2\'disulphonic acid
CIELAB scale
Influence Of The Aromatic Substituente on the Aggregation Properties of Direct Dyes Derived from 4,4\'-Diaminostilbene-2,2\'-Disulphonic Acid
Synthesis and photophysical properties of N-(5-amino-2-substituted-10-methyl-9H-benzo[a]phenoxazin-9-ylidene)ethanaminium chlorides