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US 2008/0073626 A1Published application
Near-infrared-absorbing material and near-infrared-absorbing filter
AssigneeFUJIFILM Corporation
InventorsKeizo KIMURA, Katsuyoshi YAMAKAWA, Osamu UCHIDA
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Abstract
The invention provides a near-infrared-absorbing material comprising at least one first compound selected from the group consisting of a singlet oxygen scavenger, a radical trapping agent and an antioxidant and at least one second compound represented by the following formula (II-1) or (II-2).
Claims14
A near-infrared-absorbing material comprising at least one first compound selected from the group consisting of a singlet oxygen scavenger, a radical trapping agent and an antioxidant and at least one second compound represented by the following formula (II-1) or (II-2):
- wherein R201, R202, R211, R212, R221 and R222 each independently represents a hydrogen atom, an aliphatic group, an aromatic group, or a heterocyclic group bound via a carbon atom;
- Z201 and Z202 each represents a nonmetallic atomic group necessary for forming a nitrogen-containing heterocycle;
- R213 to R216 and R223 to R226 each represents a hydrogen atom or a substituent group;
- and R213 and R214, R214 and R211, R211 and R212, R212 and R215, R215 and R216, R223 and R224, R224 and R221, R221 and R222, R222 and R225, and R225 and R226 may be bound to each other to form a ring.
1 more element
Dependencies are inferred from the claim text.