A comparative study on the aggregate formation of two oxazine dyes in aqueous and aqueous urea solutions.
作者： A. Ghanadzadeh Gilani , M. Moghadam , S.E. Hosseini , M.S. Zakerhamidi
DOI: 10.1016/J.SAA.2011.07.086
关键词: Aqueous solution 、 Dimer 、 Brilliant cresyl blue 、 Photochemistry 、 Exciton 、 Urea 、 Chemistry 、 Nile blue 、 Absorption spectroscopy 、 Aggregate (composite) 、 Inorganic chemistry
摘要: Abstract The visible absorption spectra of two oxazine dyes, brilliant cresyl blue and nile blue, in aqueous urea solutions (0.01–1 M) were studied as a function the dye concentration. Due to structural similarity investigated their spectral features compared. dimerization behavior dyes water with or without was analyzed terms monomer–dimer equilibrium. nature structure interacting pairs for these discussed using exciton theory. constant values calculated. For both solutions, reduction dimer formation observed. excitonic parameters compared those oxazine-1, which is structurally similar dyes.
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