Interaction between toroidal nanocluster Mo138and cationic surfactant tridecylpyridinium chloride in aqua solution was studied by UV-spectroscopy, FTIR-spectroscopy, dynamical light scattering - we have determined size distribution and ξ-potential of the system. Due to experimental data we have made a model, which describes interaction mechanism between Mo138 and surfactant in dependence on the component concentrations ratio. The model also has been proved by atomic force microscopy and scanning electron microscopy.