Dye-surfactant interactions are being explored from various viewpoints over the years, in this work the interactions between fluorescein dye and manganese based water soluble surfactant were explored to modulate the photophysical properties of such photosensitizers in metal containing microheterogenous environment and evaluating their role in solubilization. For the purpose, manganese (Mn) surfactant complexes were prepared, in different ratios of metallic counter ion to number of hydrocarbon chains i.e. 1:1 and 1:2. The formulated complexes were further characterized by different techniques viz. Fourier transformed infra red spectroscopy (FTIR), elemental analysis, thermogravimetric analysis, and nuclear magnetic resonance (NMR). Thermal stability of manganese surfactant complexes and kinetics of decomposition were investigated. The effect of metallic counter ion and temperature was evaluated on the surface activity and aggregation of manganese surfactants, where presence of metal ion lowered the critical micellization concentration and also affected the packing of adsorbed molecules at air/solution interface. Our investigation further capitalized on the spectral sensitivity of fluorescein dye in pre and post micellar system of manganese surfactant complexes. The influence of manganese surfactant complexes on the photophysics of fluorescein dye was thoroughly evaluated using spectrofluorimetric parameters such as Stern-Volmer constant, binding constant and anisotropy. NMR was used to locate the binding site of dye molecules in metallomicelles. Fluorescence quantum yield and singlet oxygen quantum yield was estimated using comparative methods and increased fluorescence and singlet oxygen quantum yields were observed for dye on solubilization in metallomicelle as compared to conventional surfactant.