Luminescent ternary inorganic-organic mesoporous hybrids Eu(TTASi-SBA-15)phen: covalent linkage in TTA directly functionalized SBA-15.
A novel kind of luminescent ternary organic-inorganic mesoporous hybrid Eu(TTASi-SBA-15)(3)phen (phen = 1,10-phenanthroline) has been assembled by the Eu(3+) complex covalently attached to the TTA directly Functionalized ordered mesoporous SBA-15, which is characterized to have high surface area, uniformity in the mesostructure and crystallinity. The efficient intramolecular energy transfer in mesoporous material Eu(TTASi-SBA-15)(3)phen mainly occurs between the modified ligand TTASi and the central Eu(3+) ion. Furthermore, compared with the binary mesoporous material Eu(TTASi-SBA-15)(3), the ternary mesoporous material Eu(TTASi-SBA-15)(3)phen exhibits the characteristic emission of the Eu(3+) ion with a higher luminescence quantum efficiency intensity and a longer lifetime, suggesting that the introduction of ligand phen into the mesoporous matrix is of benefit for the sentisization of Eu(3+)luminescence, by replacing H(2)O groups that can quench the luminescence of Eu(3+) ions.
Yan
Bing
B
Department of Chemistry, Tongji University, Siping Road 1239, Shanghai, 200092, China. byan@tongji.edu.cn
Li
Ying
Y