Studies on the molecular interaction of Azure dyes with Triton X-100

Papiya Jana¹, D. Elangovan² and Asok K. Jana²*
¹Department of Chemistry, Sri Manakula Vinayagar Engineering College, Pondicherry 605 107, India
²Department of Chemistry, Kanchi Mamunivar Centre for Post-Graduate Studies, Pondicherry 605 008, India

A B S T R A C T
The absorption spectra of Azure dyes such as Azure A, Azure B and Azure C in aqueous solution of sodium lauryl sulphate ( SLS) show that Azure dyes form 1:1 charge-transfer (CT) or electron-donor-acceptor (EDA) complex with SLS. The photogalvanic and photo conductometric studies also support the above interactions. From the thermodynamic, spectrophotometric and photophysical parameters of these complexes, the abilities of dyes to accept electron are found to be in the order: Azure C > Azure A > Azure B. There is a good correlation among the spectral and thermodynamic properties of these complexes.
Keywords: Azure dyes, CT interaction, Dye- surfactant, Photogalvanic