Charge transfer complexes of ferrocenes having light filtering properties

摘要

Ferrocene ionic charge complexes of benzoquinones having utility as optical filters capable of absorbing electromagnetic radiations within the range of 3500 - 6000 Angstrom. The active material can be utilized in a suitable optical system as a liquid filter in the form of a solution, emulsion, gel, etc., or as a film together with suitable light permeable backing or support members.