Blue-shifting photoluminescence of Tris (8-hydroxyquinoline) aluminium encapsulated in the channel of functionalized mesoporous silica SBA-15

We describe the immobilization and photoluminescent properties of Tris (8-hydroxyquinoline) aluminium (Alq3) in the pores of mesoporous silica SBA-15 with amino functional group on the inner surface. Significant blue-shift in PL spectra of about 90 nm was observed and a possible amino group involved mechanism has been put forward.