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Luminescence of Europium(III) Chelates with 4‐(Arylethynyl)pyridines as Ligands
Author(s) -
Takalo Harri,
Hänninen Elina,
Kankare Jouko
Publication year - 1993
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19930760211
Subject(s) - chemistry , luminescence , chelation , europium , excitation wavelength , pyridine , excitation , inorganic chemistry , photochemistry , medicinal chemistry , ion , organic chemistry , physics , optoelectronics , electrical engineering , engineering
Some Spectral properties and luminescence intensities of Eu III chelates with 4‐(arylethynyl)pyridine‐2,6‐dicarboxylic acids 1 – 15 and 2,2′,2″,2′″‐{[4‐(arylethynyl)pyrridine‐2,6‐diyl]bis(methylenenitrilo)} tetrakis(acetic acids) 16 – 26 were measured both in H 2 O and EtOH solutions for the purpose of developing suitable labels to be used in time‐resolved luminescence‐based bioaffinity assays ( Tables 1 and 2 ). The substitution at the Ar group has a significant effect upon the observed luminescence intensities, excitation wavelengths, and decay constants of the complexes, Moreover, the changes in the environment cause great variation in those properties of certain Eu III chelates.