| abstract |
(57) Abstract: The present invention is a novel asymmetric bis-squalyl compound, and more specifically, in the fields of dyes, polymeric coloring materials, dichroic dyes for liquid crystals, dyes for thermal transfer, and more Provided are novel bissqualyl compounds useful in the field of semiconductor laser applications such as electrophotographic photosensitive materials for electrophotographic printers, recording materials for optical disks, nonlinear optical materials, and materials for near infrared cut filters. A bissqualyl compound represented by the following general formula [I]: Embedded image (In the formula, the substituents R 1 and R 2 each independently represent an alkyl group which may have a substituent, and the ring A may have a 5- or 6-membered aromatic group which may have a substituent. Represents a ring, and Ring B represents a heterocycle containing a nitrogen atom.) |