Rylene dye

A perylene dye is a dye based on the perylene framework. Perylene itself consists of two naphthalene units connected at the peri-position and in perylene homologues new naphthalene units are added, forming compounds - or poly(peri-naphthalene)s - such as terrylene, quarterrylene. . In mono- and di-imide derivatives solubility is greatly improved.

Perylene dyes are actively researched in academia for optoelectronic and photovoltaic devices, thermographic processes, energy-transfer cascades, light-emitting diodes, and near-infrared-absorbing systems.^[1]

A bathochromic shift of about 100 nm is recorded per additional naphthalene unit.

Pigments

Several perylene pigments have been developed for artist's paints :

• Perylene red (PR149), a middle red, between light and dark cadmium red.
• Perylene maroon (PR179), closed to alizarin crimson (PR83).
• Perylene violet (PV29)
• Perylene black (PBk31)

References