Synthesis and characterization of the thermal and the solvatochromic properties of heterocyclic azo dyes derived from 5-N,N-dialkylamino-2,2´-bithiophene couplers

A series of heterocyclic azo dyes was synthesized by diazotation of several substituted anilines and coupling with 5-N,N-dialkylamino-2,2´-bithiophenes to give 4-phenylazo-5-N,N-dialkylamino-2,2´-bithiophenes 4-7. This reaction contrasts with the behavior of 5-alkoxy-2,2´-bithiophenes towards aryldi...

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Bibliographic Details
Main Author: Raposo, M. Manuela M. (author)
Other Authors: Ferreira, Ana M. P. F. (author), Amaro, Mariana (author), Belsley, M. (author), Moura, João C. V. P. (author)
Format: article
Language:eng
Published: 2009
Subjects:
Synthesis
Bithiophenes
Azo coupling
5-N,N-Dialkylamino-2,2´-bithiophene couplers
Heterocyclic azo dyes
Solvatochromic probes
Thermal stability
Science & Technology
Online Access:http://hdl.handle.net/1822/10655
Country:Portugal
Oai:oai:repositorium.sdum.uminho.pt:1822/10655

Internet

http://hdl.handle.net/1822/10655

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