Metallic inorganic/organic hybrid system through functionalized Schiff-base linkage: Molecular assembly, characterization and luminescence

In this paper, two Schiff-base compounds (N,N′-bis(salicylidene)-1,3-ethylenediamine (BSEA) and N,N′N″-tris(salicylidene)-(2-aminoethyl) amine (TSAEA)) are modified with a crosslinking reagent isocyanate propyl triethoxysilane (TESPIC) to achieve two linkages (BSEASi and TSAEASi). Then metallic (Ni2+, Mn2+, Co2+) inorganic/organic hybrids with functionalized Schiff-base linkages are prepared with coordination bonding. Then the corresponding mesoporous hybrids with BSEASi functionalized SBA15 host are assembled. All these hybrids are characterized in detail and particularly the photoluminescence of them shows that they all show the luminescence of the organically bonded host and metal ions that only disturb it.

► Hybrids with metallic (Ni2+, Co2+, Mn2+) through Schiff-base linkage. ► Mesoporous hybrids with metallic (Ni2+, Co2+, Mn2+) through Schiff-base linkage. ► Luminescence in visible region.