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New benzo[a]phenoxazines bearing the (4,6-dichloro-1,3,5-triazin-2-yl)amino group: synthesis and photophysical properties

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Detalhes bibliográficos
Resumo:Synthesis of new benzo[a]phenoxazinium chlorides possessing the (4,6-dichloro-1,3,5- triazin-2-yl)amino at 5-amino function of the heterocycles is described. The preliminary photophysical properties of these compounds in anhydrous ethanol when acidified with TFA or basified with TEAH is also investigated, as well as their response in aqueous media. These benzo[a]phenoxazinium chlorides exhibited fluorescence with maximum emission wavelengths between 628 and 676 nm, in anhydrous ethanol and water.
Autores principais:Raju, B. Rama
Outros Autores:Parente, Joana F. C.; Leitão, Maria Inês P. S.; Coutinho, Paulo J. G.; Gonçalves, M. Sameiro T.
Assunto:Benzo[a]phenoxazinium dyes Nile Blue 2,4,6-trichloro-1,3,5-triazine Acid-base equilibrium
Ano:2015
País:Portugal
Tipo de documento:comunicação em conferência
Tipo de acesso:acesso aberto
Instituição associada:Universidade do Minho
Idioma:inglês
Origem:RepositóriUM - Universidade do Minho
Descrição
Resumo:Synthesis of new benzo[a]phenoxazinium chlorides possessing the (4,6-dichloro-1,3,5- triazin-2-yl)amino at 5-amino function of the heterocycles is described. The preliminary photophysical properties of these compounds in anhydrous ethanol when acidified with TFA or basified with TEAH is also investigated, as well as their response in aqueous media. These benzo[a]phenoxazinium chlorides exhibited fluorescence with maximum emission wavelengths between 628 and 676 nm, in anhydrous ethanol and water.