Porphyrin compound, process for producing porphyrin...

Details Porphyrin compound, process for producing porphyrin... Porphyrin compound, process for producing porphyrin...

2011-04-19

2011-04-19

Wilson, James O (Department: 1624)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

07928222

ABSTRACT:
Compounds described herein are suitable for use in three-dimensional optical recording materials, etc. The compounds each have a structure that allows pi-electron conjugation to be achieved by linking a porphyrin ring and a perinaphthothioindigo ring to each other with a straight-chain atomic group. The compounds are suitable for use in three-dimensional optical recording materials, etc. since they have a high two-photon absorption efficiency and undergo photochromism effectively through optical absorption. The compounds include those represented by the following formula (1):in-line-formulae description="In-line Formulae" end="lead"?P1—[Y]—P2  (1)in-line-formulae description="In-line Formulae" end="tail"?where P1corresponds to a porphyrin ring; P2corresponds to a perinaphthothioindigo ring a hydrogen atom, or a halogen atom; and Y is a group that links P1and P2.

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