Photoluminescence Behaviour of L-Tryptophan : Solubilization in Surfactant Micelles

Seema Acharya* and Smita Mathur

Photochemistry Laboratory, Department of Chemistry, J. N. Vyas University Jodhpur - 342005 (India)

The fluorescence and absorption spectra of I-tryptophan 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 also been confirmed by quantitative calculation like quantum yield, molar extinction coefficient (log e) and Stokes’ Shift values.

l-tryptophan; Fluorescence; Surfactant; Solubilization