Premium
Synthesis of Functionalized Calix[4]arene Ligands Incorporating Bipyridine N , N′ ‐Dioxide Chromophores and Luminescence of Their Lanthanide Complexes
Author(s) -
Prodi Luca,
Pivari Silvia,
Bolletta Fabrizio,
Hissler Muriel,
Ziessel Raymond
Publication year - 1998
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/(sici)1099-0682(199812)1998:12<1959::aid-ejic1959>3.0.co;2-0
Subject(s) - chemistry , lanthanide , chromophore , cryptand , luminescence , calixarene , photochemistry , absorption (acoustics) , inorganic chemistry , molecule , organic chemistry , ion , physics , optoelectronics , acoustics
Members of a new family of lanthanide complexes of the cone‐shaped podand 1 and the barrel‐shaped cryptand 2 , based on calix[4]arenes incorporating bipyridine N , N′ ‐dioxide chromophores, have been synthesized and characterized. The complexes were found to be stable in water and coordinating solvents. High molar absorption coefficients {ϵ = 28000 and 36000 M −1 cm −1 for [Eu( 1 )] 3+ and [Eu( 2 )] 3+ , respectively} and high metal luminescence quantum yields {Φ = 0.19 and 0.11 for [Eu( 1 )] 3+ and [Eu( 2 )] 3+ , respectively} were obtained. The effect of OH oscillators, attached at the lower rim of the calixarenes, on the non‐radiative deactivation to the ground state has been demonstrated.