Structured mesoporous tin oxide with electrical conductivity. Application in electroluminescence

Tin oxide nanoparticles (2-5 nm) have been structured using CTAB surfactant into mesoporous mpSnO₂ materials that exhibit lower electrical resistivity than the precursors SnO₂ nanoparticles and over nine orders the magnitude lower than that of mesoporous MCM-41 silica. The superior performance of these conductive mesoporous mpSnO₂ materials as hosts is clearly manifested by the fact that a conjugated polymer with 2,5-dimethoxyphenylenevinylene structure emits light at voltages below 10 V direct current when incorporated in mpSnO₂ materials, but not in analogous mesoporous MCM-41 silica or when adsorbed on the nonporous precursor SnO₂ nanoparticles.