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Near infrared high emission rare-earth complex

Foreign code F120006099
File No. S2008-0211
Posted date Jan 6, 2012
Country United States of America
Application number 92024409
Gazette No. 20110003979
Gazette No. 8545807
Date of filing Feb 26, 2009
Gazette Date Jan 6, 2011
Gazette Date Oct 1, 2013
International application number JP2009000866
International publication number WO2009110199
Date of international filing Feb 26, 2009
Date of international publication Sep 11, 2009
Priority data
  • P2008-052779 (Mar 4, 2008) JP
  • 2009WO-JP00866 (Feb 26, 2009) WO
Title Near infrared high emission rare-earth complex
Abstract (US8545807)
The present invention has been created to provide a near infrared high emission rare-earth complex having an excellent light-emitting property in the near infrared region.
The near infrared high emission rare-earth complex of the present invention is characterized in that its structure is expressed by the following general formula (1): where Ln(III) represents a trivalent rare-earth ion; n is an integer equal to or greater than three; Xs represent either the same member or different members selected from a hydrogen atom, a deuterium atom, halogen atoms, C1-C20 groups, hydroxyl groups, nitro groups, amino groups, sulfonyl groups, cyano groups, silyl groups, phosphonic groups, diazo groups and mercapto groups; and Z represents a bidentate ligand.
Scope of claims [claim1]
1. A near infrared high emission rare-earth complex, comprising three bidentate phosphine oxide ligands having a biphenyl base and three bidentate ligands which differ from the aforementioned ligands, wherein the complex has a structure expressed by a following general formula (1):
where Ln is Yb; n is three; Xs represent either a same member or different members selected from a hydrogen atom, a deuterium atom, halogen atoms, C1-C20 groups, hydroxyl groups, nitro groups, amino groups, sulfonyl groups, cyano groups, silyl groups, phosphonic groups, diazo groups and mercapto groups; and Z represents a bidentate ligand expressed by a general formula (2):
where R1 and R2 are a same member or different members selected from C1-C22 aliphatic groups free of hydrogen atoms, aromatic groups free of hydrogen atoms, and aromatic heterocyclic groups free of hydrogen atoms.
[claim2]
2. A security ink using a near infrared high emission rare-earth complex comprising three bidentate phosphine oxide ligands having a biphenyl base and three bidentate ligands which differ from the aforementioned ligands, wherein the complex has a structure expressed by a following general formula (1):
where Ln is Yb; n is three; Xs represent either a same member or different members selected from a hydrogen atom, a deuterium atom, halogen atoms, C1-C20 groups, hydroxyl groups, nitro groups, amino groups, sulfonyl groups, cyano groups, silyl groups, phosphonic groups, diazo groups and mercapto groups; and Z represents a bidentate ligand expressed by a general formula (2):
where R1 and R2 are a same member or different members selected from C1-C22 aliphatic groups free of hydrogen atoms, aromatic groups free of hydrogen atoms, and aromatic heterocyclic groups free of hydrogen atoms.
[claim3]
3. A light-emitting source using a near infrared high emission rare-earth complex comprising three bidentate phosphine oxide ligands having a biphenyl base and three bidentate ligands which differ from the aforementioned ligands, wherein the complex has a structure expressed by a following general formula (1):
where Ln is Yb; n is three; Xs represent either a same member or different members selected from a hydrogen atom, a deuterium atom, halogen atoms, C1-C20 groups, hydroxyl groups, nitro groups, amino groups, sulfonyl groups, cyano groups, silyl groups, phosphonic groups, diazo groups and mercapto groups; and Z represents a bidentate ligand expressed by a general formula (2):
where R1 and R2 are a same member or different members selected from C1-C22 aliphatic groups free of hydrogen atoms, aromatic groups free of hydrogen atoms, and aromatic heterocyclic groups free of hydrogen atoms.
[claim4]
4. A labeling agent for a measurement, using a near infrared high emission rare-earth complex comprising three bidentate phosphine oxide ligands having a biphenyl base and three bidentate ligands which differ from the aforementioned ligands, wherein the complex has a structure expressed by a following general formula (1):
where Ln is Yb; n is three; Xs represent either a same member or different members selected from a hydrogen atom, a deuterium atom, halogen atoms, C1-C20 groups, hydroxyl groups, nitro groups, amino groups, sulfonyl groups, cyano groups, silyl groups, phosphonic groups, diazo groups and mercapto groups; and Z represents a bidentate ligand expressed by a general formula (2):
where R1 and R2 are a same member or different members selected from C1-C22 aliphatic groups free of hydrogen atoms, aromatic groups free of hydrogen atoms, and aromatic heterocyclic groups free of hydrogen atoms.
  • Inventor, and Inventor/Applicant
  • HASEGAWA YASUCHIKA
  • KAWAI HIDEKI
  • KAWAI TSUYOSHI
  • NARA INSTITUTE OF SCIENCE AND TECHNOLOGY
IPC(International Patent Classification)
U.S. Cl./(Sub)
  • C07F005/00B
  • C07F009/53Y
  • C09D011/037
  • C09D011/50
  • C09K011/06
  • M09K211/18D
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