Rs. Dickins et al., STRONG EXCITON COUPLING AND CIRCULARLY-POLARIZED LUMINESCENCE IN RIGID COMPLEXES OF CHIRAL MACROCYCLIC TETRANAPHTHYLAMIDES, Chemical communications, (18), 1997, pp. 1747-1748
Strong exciton coupling occurs between adjacent pairs of naphthyl chro
mophores in the chiral sodium and europium complexes of L-1; in the co
nstitutionally isomeric complexes of L-2, intramolecular excimer forma
tion is observed and both sets of Eu complexes give a well defined, me
tal-based circularly polarised emission.