F. Wurthner et al., OPTIMIZATION OF NEUTROCYANINE CHROMOPHORES BASED ON 5-MEMBERED HETEROCYCLES FOR PHOTOREFRACTIVE APPLICATIONS, Chemical communications, (16), 1998, pp. 1739-1740
Exceptionally large photorefractive figures-of-merit are observed for
neutrocyanine dyes based on dialkylaminothiophenes and -furans linked
to quinoid five-membered heterocyclic acceptor groups by a methine bri
dge.