Novel photochromic 2,2´-bithiophene azo dyes

The photochromic behaviour of two series of 2,2’-bithiophene azo dyes in THF solutions was studied. The photochromic properties and colour constancy were strongly dependent on the substitution pattern of the dyes. Under visible irradiation (> 420 nm) while some dyes exhibited a significant change...

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Bibliographic Details
Main Author: Coelho, Paulo J. (author)
Other Authors: Carvalho, Luís H. Melo de (author), Moura, João C. V. P. (author), Raposo, M. Manuela M. (author)
Format: article
Language:eng
Published: 2009
Subjects:
Photochromism
Heterocyclic azo dyes
Synthesis
Azo coupling
Bithiophene
Azo dyes
UV-Visible spectroscopy
UV/vis spectroscopy
Science & Technology
Online Access:http://hdl.handle.net/1822/10647
Country:Portugal
Oai:oai:repositorium.sdum.uminho.pt:1822/10647

Internet

http://hdl.handle.net/1822/10647

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