Effects of Rare-Earth Ion Substitution upon the Fluorescence of Terbium Hexa-Antipyrene Tri-Iodide and Sodium Europium Tungstate

Abstract

The directions and relative ease of transfer of energy between different rare‐earth hexa‐antipyrene aggregates are compared by examining the influences of rare‐earth substitutions upon the fluorescence of terbium hexa‐antipyrene tri‐iodide. Data concerning much shorter range interactions between rare‐earth ions are obtained employing the sodium rare‐earth tungstates. Energy transfer and quenching effects show systematic relationships to the total orbital angular momentum of the 4f subshell electrons of the rare‐earth ions.