Conformation effects on the fluorescence spectra of europium and terbium complexes with a family of ether-amide type multipodal ligands

Three multipodal ligands: 3,3,7,7-tetra[ N-methyl- N-phenyl(acetamide)-2-oxymethyl]-5-oxanonane (L a), 3,3,7,7-tetra[ N-ethyl- N-phenyl(acetamide)-2-oxymethyl]-5-oxanonane (L b), 3,3,7,7-tetra[ N-benzyl- N-phenyl(acetamide)-2-oxymethyl]-5-oxanonane (L c) and their europium and terbium nitrate and pe...

Full description

Saved in:
Bibliographic Details
Published in:Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Molecular and biomolecular spectroscopy, 2007, Vol.66 (1), p.118-125
Main Authors: Lei, Ke-Wei, Liu, Wei-Sheng, Tan, Min-Yu
Format: Article
Language:English
Subjects:
Alkanes - chemistry
Amides - chemistry
Anion effect
Ether-amide type multipodal ligand
Ethers - chemistry
Europium - chemistry
Fluorescence
Lanthanide
Ligands
Molecular Structure
Nitrate
Perchlorate
Spectrometry, Fluorescence
Terbium - chemistry
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Three multipodal ligands: 3,3,7,7-tetra[ N-methyl- N-phenyl(acetamide)-2-oxymethyl]-5-oxanonane (L a), 3,3,7,7-tetra[ N-ethyl- N-phenyl(acetamide)-2-oxymethyl]-5-oxanonane (L b), 3,3,7,7-tetra[ N-benzyl- N-phenyl(acetamide)-2-oxymethyl]-5-oxanonane (L c) and their europium and terbium nitrate and perchlorate complexes were synthesized. The 12 complexes were characterized by elemental analysis, IR, fluorescence spectroscopy and conductivity. The novel cup-like crystal structure of the Eu(III) complex with L b and fluorescence emission properties of the complexes have also been studied. It has been showed that the nature of the anion has a great effect upon the composition of the complexes. The difference in the composition of the complexes results in the difference in the emission properties of them. The [Ln(NO 3) 5] group is negatively effective to the fluorescence intensity of the nitrate complexes. The luminescence intensity of Ln(III) perchlorate complex is stronger than that of nitrate complex.
ISSN:1386-1425
DOI:10.1016/j.saa.2006.01.053