New nanomaterials for control of the luminescence of polycyclic aromatic hydrocarbons

Resumo

New nanomaterials (ordered structures) have been proposed for control of the luminescence of polycyclic aromatic hydrocarbons by solubilization of the latter into ordered structures. These structures are formed by hydrophilic silver nanoparticles adsorbed on a cellulose matrix—filter paper—through their self organization and by molecules of a cationic surfactant—cetyltrimethylammonium bromide—in concentrations exceeding the critical micelle concentration. The observed enhancement of luminescence of solubilized pyrene molecules in the violet spectral range is due to the resonance of the electronic transitions of monomeric pyrene molecules in this range with a plasmon vibrations in silver nanoparticles.