Syntheses and fluorescence properties of two novel lanthanide (III) perchlorate complexes with bis(benzylsulfinyl)methane.
A novel ligand with double sulfinyl groups, bis(benzylsulfinyl)methane, was synthesized by a new method and its two lanthanide (III) complexes were synthesized and characterized by element analysis, molar conductivity, coordination titration analysis, IR, TG-DSC, (1)HNMR and UV spectra. The results indicated that the composition of these complexes was REL(2.5)(ClO(4))(3)·3H(2)O (RE = Tb (III), Dy (III), L = C(6)H(5)CH(2)SOCH(2)SOCH(2)C(6)H(5)). The FT-IR results revealed that the perchlorate group was bonded with the lanthanide ion by the oxygen atoms, and the coordination was bidentate. The fluorescent spectra illustrated that both the Tb (III) and Dy (III) complexes displayed characteristic fluorescence in solid state, especially for the Tb (III) complex, the peak of (5)D(4) → (7)F(5) of the Tb (III) ion in 544 nm was stronger than that of others. It indicated that the Tb (III) complex could emit purer green fluorescence. By analysis fluorescence and phosphorescence spectra, it was found that the ligand had the advantage to absorb energy and transfer it to the Tb (III) and Dy (III) ions. The phosphorescence spectra and fluorescence lifetimes of the complexes were also measured.
College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, People's Republic of China. nmglwx@163.com
Wen-Xian
WX
Li
Ying-Jie
YJ
Li
Wen-Juan
WJ
Chai
Tie
T
Ren
Yu
Y
Liu
Jing
J
Zhang
Bo-Yang
BY
Ao
D056831:Coordination Complexes / Q000138:chemical synthesis* / Q000737:chemistry*; D005453:Fluorescence; D028581:Lanthanoid Series Elements / Q000737:chemistry*; D008024:Ligands; D015394:Molecular Structure; D010472:Perchlorates / Q000737:chemistry*; D013454:Sulfoxides / Q000737:chemistry*
D056831:Coordination Complexes; D028581:Lanthanoid Series Elements; D008024:Ligands; D010472:Perchlorates; D013454:Sulfoxides; C494474:perchlorate