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US 7,902,741 B2Granted
Fluorescent complex and lighting system using the same
AssigneeKabushiki Kaisha Toshiba
InventorsHiroki Iwanaga, Akio Amano, Fumihiko Aiga
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Abstract
Disclosed are a fluorescent complex comprising a rare earth atom and a ligand having a structure comprising a plurality of coordinating groups bonded to each other in a ring form, and a lighting system and a flashlight device using the same. This fluorescent complex can realize high-intensity fluorescence and a prolonged service life and gives a sharp fluorescence spectrum.
Claims7
A fluorescent complex comprising a rare earth atom and at least one ligand having a structure represented by the following formula (A1):
- wherein
- X represents a phosphorous atom,
- R represents a group selected from the group consisting of a substituted or unsubstituted straight chain or branched alkyl or alkoxy having 20 or less carbon atoms, phenyl, biphenyl, and naphtyl, each R group can be the same or different, and
- n1 to n4 are independently an integer selected from 0-5.
1 more element
Dependencies are inferred from the claim text.