T. Toupance et al., IONE-ELECTRONICS - CROWN-ETHER SUBSTITUTED LUTETIUM BISPHTHALOCYANINES, Journal of the Chemical Society, Chemical Communications, (1), 1994, pp. 75-76
A lutetium bisphthalocyanine substituted with 15-crown 5 moieties is s
ynthesized and thoroughly characterized; large alkali ions induce the
formation of aggregates via a positive cooperative effect.