Abstract

The metallophthalocyanines have recently received some attention as a new class of nonlinear optical (NLO) organometallic materials.¹,² In addition to the extensive delocalized π system, the presence of the metal introduces metal-to-ligand and ligand-to-metal charge transfer (MLCT and LMCT) states. While these properties are known to give rise to large third-order optical nonlinearities, the precise mechanism for the nonlinearities in transition-metal substituted phthalocyanines is not yet understood.

© 1989 Optical Society of America