Abstract

MICELLAR SOLUBILIZATION OF CARBAZOLE BY SPECTROFLUORIMETRY

Seema Acharya and Komal Singh Sengar*

ABSTRACT

Carbazole (CAZL) is an aromatic heterocyclic organic compound. It has a tricyclic structure, consisting of two six-membered benzene rings fused on either side of a five-membered nitrogen-containing ring. Carbazole and its derivatives are widely used as an intermediate in synthesis of pharmaceuticals, agrochemicals, dyes, pigments and other organic compounds. The fluorescence and absorption spectra of CAZL have been studied in presence of different surfactant solution at room temperature. The dual nature of surfactant micelle is responsible for the occurrence of properties of surface activity, solubilization and micellization. The increase in fluorescence intensity on addition of surfactant can be attributed to the increase in quantum efficiency suggests that the surfactant have solubilized the suspended molecule. The solubilization phenomenon has been confirmed by quantitative f calculation like empirical fluorescence coefficient (kf), quantum yield ( ), molar extinction coefficient (log ε) and Stokes' shift values.

Keywords: Carbazole, Surfactant, Fluorescence, Solubilization.