✦ LIBER ✦

Synthesis and fluorescent properties of europium-polymer complexes containing naphthoate and 1.10-phenanthroline ligands

✍ Scribed by Chenxia Du; Lin Ma; Yan Xu; Wenlian Li

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 149 KB
Volume: 66
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19971114)66:7<1405::aid-app19>3.0.co;2-0

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✦ Synopsis

Highly fluorescent Eu -polymer complexes were synthesized through copolymerization of EuPhen ( Nap ) 2 AA with methyl methacrylate or styrene and their luminescent properties were investigated. The Eu -polymer luminophores showed intense red emission under UV excitation, and the emission intensities were much stronger than that of the EuPhen ( Nap ) 2 AA complex. Typical relationships between emission intensity and Eu content in copolymers exhibited some extent of concentration quenching in our studies. However, 5 D 0 lifetime results suggested that the concentration quenching phenomena cannot be accounted for by deactivation of the 5 D 0 state through exchange and multipolar interactions. Ligand energy migration along or crosspolymer chains can interpret the emission concentration quenching phenomena reasonably.

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