Synthesis and luminescence properties of lanthanide complexes with a new tripodal ligands featuring salicylamide arms.
A series of luminescent lanthanide complexes with a new tripodal ligand featuring salicylamide arms, 2,2',2''-nitrilotris(2-furfurylaminoformylphenoxy)triethylamine (L), were synthesized and characterized by elemental analysis, IR and molar conductivity measurements. Photophysical properties of the complexes were studied by means of UV-vis absorption and steady-state luminescence spectroscopy. Excited-state luminescence lifetimes and quantum yield of the complexes were determined. Luminescence studies demonstrated that the tripodal ligand featuring salicylamide arms exhibits a good antennae effect with respect to the Tb(III) and Dy(III) ion due to efficient intersystem crossing and ligand to metal energy transfer. From a more general perspective, this work offers interesting perspectives for the development of efficient luminescent stains and enlarges the arsenal for developing novel luminescent lanthanide complexes of salicylamide derivatives.
Song
Xue-Qin
XQ
School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China. songxq@lzjtu.cn
Dong
Wen-Kui
WK
Zhang
Yu-Jie
YJ
Liu
Wei-Sheng
WS
D004735:Energy Transfer; D028581:Lanthanoid Series Elements / Q000737:chemistry*; D008024:Ligands; D049449:Luminescence; D008163:Luminescent Measurements; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry*; D012457:Salicylamides / Q000737:chemistry*
D028581:Lanthanoid Series Elements; D008024:Ligands; D009942:Organometallic Compounds; D012457:Salicylamides; C031060:salicylamide