Department of Chemistry, Tongji University, Siping Road 1239, Shanghai, 200092, China.
Dalton Trans. 2010 Feb 14;39(6):1480-7. doi: 10.1039/b914586a. Epub 2009 Sep 29.
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.
一种新型的发光三元有机-无机介孔杂化 Eu(TTASi-SBA-15)(3)phen（phen = 1,10-菲啰啉）通过将 Eu(3+) 配合物共价连接到直接功能化的有序介孔 SBA-15 上组装而成，具有高比表面积、介孔结构均匀性和结晶度。介孔材料 Eu(TTASi-SBA-15)(3)phen 中的高效分子内能量转移主要发生在修饰配体 TTASi 和中心 Eu(3+) 离子之间。此外，与二元介孔材料 Eu(TTASi-SBA-15)(3)相比，三元介孔材料 Eu(TTASi-SBA-15)(3)phen 表现出 Eu(3+) 离子的特征发射，具有更高的发光量子效率强度和更长的寿命，表明配体 phen 的引入有利于 Eu(3+)发光的敏化，通过取代可以猝灭 Eu(3+)离子发光的 H(2)O 基团。
