WO2005044770A1 - 耐熱性を有する希土類錯体 - Google Patents
耐熱性を有する希土類錯体 Download PDFInfo
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- WO2005044770A1 WO2005044770A1 PCT/JP2004/014848 JP2004014848W WO2005044770A1 WO 2005044770 A1 WO2005044770 A1 WO 2005044770A1 JP 2004014848 W JP2004014848 W JP 2004014848W WO 2005044770 A1 WO2005044770 A1 WO 2005044770A1
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- WIPO (PCT)
- Prior art keywords
- group
- rare earth
- represented
- complex
- formula
- Prior art date
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- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 2
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic Table
- C07F5/003—Compounds containing elements of Groups 3 or 13 of the Periodic Table without C-Metal linkages
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/76—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring
- C07C69/84—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring of monocyclic hydroxy carboxylic acids, the hydroxy groups and the carboxyl groups of which are bound to carbon atoms of a six-membered aromatic ring
- C07C69/88—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring of monocyclic hydroxy carboxylic acids, the hydroxy groups and the carboxyl groups of which are bound to carbon atoms of a six-membered aromatic ring with esterified carboxyl groups
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1003—Carbocyclic compounds
- C09K2211/1007—Non-condensed systems
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/18—Metal complexes
- C09K2211/182—Metal complexes of the rare earth metals, i.e. Sc, Y or lanthanide
Definitions
- the present invention relates to a rare-earth complex excellent in heat resistance, which can be uniformly dispersed in a plastic material, has a high fluorescence emission intensity even after undergoing a heat history in a plastic molding process, and a fluorescent material containing the same.
- the present invention relates to a body and a molded resin body containing the same. Background art
- Phosphors are used in various applications that utilize the emitted fluorescence, and are incorporated in, for example, paints and inks according to the purpose.
- JP-A-2002-188026 Patent Document 1
- JP-A-2002-201386 Patent Document 2
- a phosphor to be incorporated in an aqueous ink composition, in which a phosphor is mixed with a rare earth element. It describes a dye of an organic rare earth complex consisting of a ligand such as tenyl trifluoroacetone, naphthoyl trifluoroacetone, benzoyl trifluoro acetone, methyl benzoyl trifluoro acetone, and the like as ligands. Is exemplified.
- Plastic materials are widely used as raw materials for food trays and industrial resin sheets.
- a phosphor for example, it is possible to add a phosphor to a plastic material used for food trays and detect the fluorescence emitted from the tray to have the same function as a barcode, and to add information such as the food production area. It is possible.
- plastic materials are generally melted and molded at high temperatures (for example, about 300 ° C for polycarbonate products), they do not decompose even after high-temperature heating in the molding process, and can emit fluorescent light of sufficient intensity. Phosphors are required.
- an inorganic phosphor such as YO: Eu used in cathode ray tubes for color television is used as a phosphor to be mixed with plastic, there is no problem with heat resistance, but inorganic phosphor is used.
- Phosphors cannot be uniformly dispersed because they do not dissolve in plastic materials.Furthermore, fluorescence emission is observed in organic solvents, but when mixed with plastic materials, fluorescence emission does not occur. there were.
- Patent Documents 1 and 2 it is conceivable to use an organic rare earth complex as disclosed in Patent Documents 1 and 2 as a phosphor that can be uniformly dispersed in a plastic material.
- these phosphors are not used in compositions that require heat resistance, but when heated to the temperature required for molding plastic materials, the ligand that forms the complex decomposes. was there.
- the plastic product can be uniformly dispersed in a plastic material and, after undergoing a heat history in a plastic material molding process. Therefore, it is desired to develop a phosphor having excellent heat resistance so that a sufficiently high fluorescence emission intensity can be maintained.
- An object of the present invention is to provide a phosphor which can be uniformly dispersed in a plastic material, has excellent heat resistance, and has high fluorescence emission intensity even after passing through a heat history in plastic molding. Is to do.
- the present inventors have conducted intensive studies and surprisingly found that a dinuclear rare earth complex in which an additive conventionally compounded in plastics is coordinated with a plurality of rare earth ions has been produced.
- the present inventors have found that they exhibit high heat resistance that cannot be obtained by conventional phosphors, and have completed the present invention.
- the rare earth complex of the present invention uses a plastic additive used as an ultraviolet absorber as a ligand. Therefore, the uniform dispersibility in the plastic material is very good, and the molded product of the plastic material has sufficient heat resistance without being decomposed.
- the rare earth ion means a lanthanide ion, and specifically, Ce
- Ce there are 14 types of ions, Pr ⁇ Nd, Pm, Sm, Eu, Gd, Tb, Dy ⁇ Ho, Er ⁇ Tm, Yb and Lu.
- Lanthanide is usually a trivalent cation.
- Cerium (Ce) can be a tetravalent cation and europium (Eu) can be a divalent cation.
- rare earth complexes are very useful because they have a wide spectrum of fluorescence emission in the visible light wavelength range and a long fluorescence lifetime.
- the emission wavelength of the rare earth complex is, for example, about 645 nm (red) for Sm, about 629 nm (red) for Eu, about 575 nm (yellow green) for Dy, and about 545 nm (green) for Tb.
- the fluorescence lifetime of ordinary organic fluorescent compounds is several nanoseconds
- the fluorescence lifetime of rare earth complexes, particularly complexes of europium pium (Eu) and terbium (Tb) is several hundred microseconds. It is known that this is the case.
- JP-A-11-256148 discloses a light emitting material for use in an organic EL device, comprising a phosphorescent substance having a triplet level and a rare earth complex, Luminescent materials using a mononuclear rare earth complex in which three molecules of dibenzoylmethane are coordinated to a single europium (Eu) and a phosphor are exemplified.
- This rare-earth complex receives the energy of triplet excitons generated in the phosphor by the recombination of holes and electrons in the organic light-emitting layer vacuum-deposited on the substrate, and finally emits the fluorescence derived from rare-earth ions. It emits light.
- the rare earth complex of the present invention is a dinuclear complex having a plurality of rare earth ions, and after passing through a heat history in a plastic material molding process, it can be exposed to ultraviolet light or visible light (about 300 nm). It emits fluorescence of sufficient intensity when irradiated (about 450 nm). Further, since the dinuclear rare earth complex of the present invention is directly excited by irradiation with ultraviolet light or visible light and emits fluorescence, no auxiliary substance such as a phosphorescent substance having a triplet level is required for excitation.
- the present invention provides the following:
- a binuclear rare earth complex obtained by coordinating a plurality of rare earth ions with one or more molecules having a photosensitizing function
- R, R, R, R and R independently represent hydrogen, hydroxyl, substituted or unsubstituted
- R is a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms or a cycloalkyl group;
- Y is OH
- p is an integer from 1 to 40;
- V is a ligand which is a hydroxide ion
- q is an integer from 0 to 8.
- Ln is a rare earth ion
- r is an integer from 2 to 20, where each Ln may be the same or different;
- X is 0, —OH, S, —SH, Se or Te;
- s is an integer from 1 to 20, wherein when s is an integer from 2 to 20, each X may be the same or different;
- the mode of coordination in the L force is the coordination mode in which Y and Y bind to the same Ln (
- a cycloalkyl group, an alkoxy group represented by OR, or an acyl group represented by —C ( 0) R, wherein R is a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms.
- R is a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms.
- R, R, R, R and R independently represent hydrogen, a hydroxyl group, substituted or unsubstituted
- R is a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms or a cycloalkyl group.
- At least one of R, R, R and R is an alkyl group or a group represented by R;
- a cycloalkyl group, an alkoxy group represented by —OR, or an acyl group represented by C ( 0) R, wherein R is a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms or a cycloalkyl group
- R is a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms or a cycloalkyl group
- a alkoxy group or an acyl group represented by C ( 0) R, wherein R is a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms or a cycloalkyl group; A dinuclear rare earth complex as described above; (7) R force The dinuclear rare earth complex according to (5) or (6), which is a substituted or unsubstituted alkyl group having 6 to 12 carbon atoms;
- Rare earth ionic force A group ion consisting of europium (Eu), terbium (Tb), neodymium (Nd), summary (Sm), erbium (Er) and ytterbium (Yb). Or the dinuclear rare earth complex according to (1), which is a combination thereof;
- Ln Europium (Eu)
- Ln Europium (Eu)
- L is OH—
- Ln is a terbium (Tb) ion
- X is O.
- a dinuclear rare earth complex which can be uniformly dispersed in a plastic material, has excellent heat resistance, and has a high luminous intensity even after passing through a thermal history!
- a phosphor is provided.
- a resin molded article obtained by blending the phosphor with a plastic polymer.
- the rare earth complex of the present invention can be directly added to a plastic material, paint or ink as a phosphor.
- a phosphor can be prepared by mixing the rare earth complex of the present invention with an organic dye (for example, coumarin) or the like, and this can be added to a plastic material or the like.
- the resin molded body produced using the plastic material containing the phosphor of the present invention can be used as a plastic product provided with illumination or encryption information.
- the phosphor of the present invention is blended with an encapsulating resin used in an LED that emits ultraviolet light or visible light, which is highly effective in improving color rendering, a full color LED having a very high utility value can be obtained. Can be manufactured.
- FIG. 1 is a fluorescence spectrum diagram of the Eu complex obtained in Example 1.
- FIG. 2 is an excitation spectrum diagram of the Eu complex obtained in Example 1.
- FIG. 3 is a fluorescence spectrum diagram of the Eu complex obtained in Example 2.
- FIG. 4 is an excitation spectrum diagram of the Eu complex obtained in Example 2.
- FIG. 5 is a fluorescence spectrum diagram of the Tb complex obtained in Example 3.
- FIG. 6 is an excitation spectrum diagram of the Tb complex obtained in Example 3.
- FIG. 7 is an emission spectrum diagram of a resin molded body containing the Eu complex obtained in Example 1.
- FIG. 8 is a graph showing the results of DSC measurement of the Eu complex obtained in Example 1 and its ligand alone.
- the rare earth complex of the present invention is a binuclear rare earth complex in which a plurality of rare earth ions coordinate one or more molecules having a photosensitizing function.
- the rare earth ion used in the present invention is not particularly limited as long as it is a lanthanide ion.
- the plurality of rare earth ions contained in the binuclear rare earth complex may be of the same type or of different types.
- the molecule to be coordinated with the rare earth ion has a photosensitizing function capable of sensitizing and emitting the rare earth ion.
- the “photosensitizing function” refers to a function of efficiently transferring irradiated energy to rare earth ions.
- it is a compound having benzophenone or benzoyl as a basic skeleton and having a triplet ⁇ - ⁇ * state.
- a molecule may be one or more in the complex.
- the rare earth complex of the present invention further has a function of suppressing vibrational energy deactivation.
- the “vibration energy deactivation suppressing function” means that the excited state of the phosphor is transferred to the vibration structure of a medium (molecule, solvent, plastic) existing therearound, and the emitted light energy is converted into thermal energy. Refers to the function of suppressing the
- a substituent having a long-chain alkyl skeleton such as an alkyl group having 6 or more carbon atoms, a cycloalkyl group, an acyl group or an alkoxy group.
- a rare earth complex is represented by a general formula LV (Ln) X. Where L is the formula:
- R, R, R, R and R are each independently hydrogen, a hydroxyl group
- R is a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms or a cycloalkyl group.
- examples of the amino group include natural amino acids and unnatural amino acids, and examples include glycine, alanine, leucine, tyrosine, and tryptophan.
- examples of the aryl group include a phenyl group, a tolyl group, a xylyl group, a biphenyl group, a naphthyl group, an anthryl group, and a phenanthryl group.
- the alkyl group or cycloalkyl group represented by R includes a methyl group, an ethyl group, a propyl group, an isopropyl group, a hexyl group, an octyl group, a decyl group, a dodecyl group, a cyclopropyl group, and a cyclohexyl group.
- Xyl group, cycloheptyl group and the like are exemplified.
- examples of the substituent include an alkyl group, a halogen, a nitro group, a cyano group and an aryl group.
- examples of the substituent include an alkyl group, a halogen, a nitro group, a cyano group, an alkoxy group and an acyl group.
- examples of the substituent include a halogen, a nitro group, a cyano group, an amino group, a carboxyl group and an aryl group.
- examples of the substituent include halogen, -to Mouth groups, cyano groups, amino groups and aryl groups are mentioned.
- examples of the substituent include an alkyl group, a halogen, a nitro group, a cyano group and an aryl group.
- examples of the substituent include an alkyl group, a halogen, a nitro group, a cyano group, an amino group, an alkoxy group and an aryl group.
- alkyl group, cycloalkyl group, alkoxy group, acyl group, and amino group as the substituent are the same as defined above.
- p is an integer from 1 to 40.
- L ′ is a ligand other than L and is a normal ligand that can coordinate to rare earth ions.
- the ligand L ′ for example, a hydroxyl ion is exemplified.
- each of a plurality of L's may be the same or different.
- Ln is a rare earth ion, and is not particularly limited.
- a lanthanide ion selected from the group consisting of: and usually present in the complex in a +3 valence state.
- r is an integer of 2 to 20, and each of a plurality of Ln may be the same or different.
- X is an atom or an atomic group that bonds to a plurality of rare earth ions to crosslink them, or bonds to a single rare earth ion, and Xs do not bond to each other !.
- X is 0, -OH, S, --SH, Se or Te, s is an integer of 1 to 20, and when s is an integer of 2 or 20, each of a plurality of Xs is the same or different May be
- the coordination bond portion composed of Y, Y and Ln has a resonance structure.
- R, R, R and R Is also an alkyl or cycloalkyl group represented by R, an alkoxy group represented by OR, or an acyl group represented by C ( 0) R, wherein R is substituted or It is an unsubstituted alkyl group having 1 to 20 carbon atoms or a cycloalkyl group.
- R is a substituted or unsubstituted long-chain alkyl group having 6 or 20 carbon atoms, and it is more preferable that R is a substituted or unsubstituted long-chain alkyl group having 8 to 20 carbon atoms. preferable.
- R is a compound represented by the formula:
- R, R, R, R and R are each independently hydrogen, a hydroxyl group, substituted or unsubstituted.
- a substituted amino group, a substituted or unsubstituted aryl group, a nitro group, a cyano group, an alkyl group or a cycloalkyl group represented by R, an alkoxy group represented by —OR, or an acyl group represented by C ( 0) R
- R is a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms or a cycloalkyl group.
- R is an alkyl group or cycloalkyl represented by R
- examples of the amino group include natural amino acids and unnatural amino acids, and examples include glycine, alanine, leucine, tyrosine, and tryptophan.
- examples of the aryl group include a phenyl group, a tolyl group, a xylyl group, a biphenyl group, a naphthyl group, an anthryl group, and a phenanthryl group.
- the alkyl group or cycloalkyl group represented by R is methyl , Ethyl, propyl, isopropyl, hexyl, octyl, decyl, dodecyl, cyclopropyl, cyclohexyl, cycloheptyl, etc.
- examples of the substituent include an alkyl group, a halogen, a nitro group, a cyano group and an aryl group.
- examples of the substituent include an alkyl group, a halogen, a nitro group, a cyano group, an alkoxy group and an acyl group.
- examples of the substituent include a halogen, a nitro group, a cyano group, an amino group, a carboxyl group and an aryl group.
- examples of the substituent include a halogen, a -group, a cyano group, an amino group and an aryl group.
- examples of the substituent include an alkyl group, a halogen, a nitro group, a cyano group and an aryl group.
- examples of the substituent include an alkyl group, a halogen, a nitro group, a cyano group, an amino group, an alkoxy group and an aryl group.
- alkyl group, cycloalkyl group, alkoxy group, acyl group, and amino group as the substituent are the same as defined above.
- the rare earth complex according to the second preferred embodiment of the present invention is a compound in which R is hexyloxy.
- the ligand has benzophenone or benzoyl as its basic structure.
- These ligands contain a long-chain alkyl, and the presence of the ligand results in a hydrophobic environment around the rare-earth complex.
- a water molecule polar molecule
- the excitation energy of the ligand having a photosensitizing function is deactivated, and the luminous efficiency is reduced.
- the presence of the long-chain alkyl group prevents the water molecule from coordinating to the rare-earth complex, and the vibration is reduced. It is thought to have a function of suppressing energy deactivation.
- the excitation spectrum at 615 ⁇ m which emits light
- the excitation spectrum at 615 ⁇ m which emits light
- the ligand absorbs light energy
- energy is transferred from the ligand to the rare earth ion to emit light
- the ligand has a photosensitizing function. Conceivable.
- the complex of the present invention is obtained by, for example, stirring and mixing a compound to be a ligand and a rare earth compound, for example, a rare earth nitrate or a rare earth acetate in methanol in the presence of, for example, triethylamine or lithium hydroxide.
- the complex of the present invention obtained by force is not soluble in water, the complex is well soluble in nonpolar solvents such as hexane and chloroform due to the presence of long-chain alkyl in a part of the structure. It is also slightly soluble in polar solvents such as methanol and acetone. From this, it is expected that it can be well dispersed and added to the polymer which is the raw material of plastic.
- the rare earth complex of the present invention can be added alone to a plastic material as a phosphor.
- a mixture of an organic dye (for example, coumarin or the like) and the rare earth complex of the present invention can be used as a phosphor to change the color.
- the present invention also provides a resin molded article obtained by blending the rare earth complex of the present invention with a plastic polymer.
- the plastic polymer to be blended with the rare earth complex is not limited, but includes polyethylene resin, polypropylene resin, polyvinyl chloride resin, urea resin, fluorine resin, polyester resin, polyamide resin, polyacetal. Resin, polycarbonate resin, polyarylate resin, polysulfone resin, polyphenylene sulfide resin, polyether sulfone resin, polyallyl sulfone resin, polytetrafluoroethylene resin, phenol resin And unsaturated polyester resin, epoxy resin, polyimide resin and polyamideimide resin.
- the molding method is not particularly limited, but examples include injection molding, blow molding, compression molding, extrusion molding, reaction molding, hollow molding, thermoforming, and FRP molding.
- molding is usually performed at a high temperature of 200 ° C or higher, and in the case of polycarbonate products, at a high temperature of about 300 ° C.
- the complex of the present invention has excellent heat resistance. That is, the Eu complex of the above structural formula shows stability up to about 310 ° C. according to DSC measurement (decomposition temperature; about 310 ° C.). In addition, the above-mentioned Tb complex exhibits stability up to at least about 200 ° C. Further, the Eu complex or the Tb complex has a long alkyl chain in the ligand, so that it is strong against water and acid and has excellent weather resistance.
- Gd complex and Tb complex were synthesized using 33 3 33 3 according to the above procedure, and FAB-MS measurement was performed.
- Table 1 shows the atomic weight of each rare earth element and the fragment peaks characteristic of each complex.
- the difference in the fragment peak is about 21 and the difference in the atomic weight is 5.3.
- the number of central metals in the complex was calculated to be 4 from 21.2 / 3.
- the number of central metals was calculated to be four.
- the tetranuclear Eu complex according to the present invention is, for example, [0071]
- R is an alkyl group having 8 to 12 carbon atoms
- Y is O. ]so
- the ligand represented is represented by the following schematic diagram:
- the above complex structure is an example for facilitating understanding of the complex structure of the present invention, and the complex of the present invention is not limited to those having this structure.
- Non-patent document 1 shows the Ln oxo cross-linked structure.
- the complex has, for example, a sandwich structure in which one Tb is sandwiched between two TbO bridge structures.
- Example 10 The results suggest that the complex contains water molecules, as observed at around 3400 cm- 1 .
- the result of the DSC measurement in Example 10 showed that the water molecule was crystal water adsorbed on the complex in the form of a salt.
- the peak is based on the ligand, and this complex is considered to emit light by photosensitization.
- the peak at around 385 nm originated from the ⁇ - ⁇ * transition of the ligand, which was observed as a result of complex formation.
- Measurements concentration 1 X 10- 4 M, performed by the slit width (5 nm, 5 nm), excited in fluorescence spectra The emission wavelength was 385 nm, and the detection wavelength was 614 nm in the excitation spectrum.
- Example 7 Fluorescence properties of Eu tetranuclear complex (I) in molded polypropylene
- the Eu complex (I) obtained in Example 1 was blended with polypropylene at a concentration of 100 ppm and injection molded at a resin temperature of about 200 ° C. to obtain a plate-like body (dimensions of about 3 mm X about 48 mm X about 83 mm ).
- the emission spectrum of the plate was measured.
- the measurement was performed using a PGP detector No. 4 type B (reflection type) with an excitation wavelength of 385 nm.
- Fig. 7 shows the results.
- Example 8 Thermal stability of Eu tetranuclear complex (I) in air
- the complex did not decompose up to 300 ° C or more, suggesting that the complex stability improved the thermal stability.
- Example 2 DSC of the complex (II) obtained in Example 2 was measured in the same manner as in Example 1, and it was found that the decomposition temperature of the complex was 320 ° C.
- Example 10 Thermal stability of Tb nonnuclear complex (III) in air
- Example 3 DSC of the complex (III) obtained in Example 3 was measured in the same manner as in Example 1, and it was found that the decomposition temperature of the complex was 200 ° C.
- Example 11 Thermal stability in fluorescence properties of Eu complex in polymer thin film
- a phosphor polymer was prepared by uniformly mixing Eu complex (I) or Eu complex (II) in polyphenylsilsesquioxane (PPSQ).
- the mixing ratio between PP SQ and Eu complex was 90% 10%.
- This phosphor polymer was applied on a glass substrate to form a thin film.
- the thickness of the thin film does not affect the measurement, so that the thickness can be any value that can be measured.
- the fluorescence lifetime of each of these thin films was measured at 25 ° C. Excited at 380 nm and observed at 615 nm. Heat in a furnace at 150 ° C, 200 ° C and 250 ° C for 5 minutes, and bring to room temperature. After cooling, the fluorescence lifetime was measured in the same manner. Table 3 shows the obtained results.
- the fluorescence lifetime could not be measured.
- the phosphor of the present invention can be used in applications requiring heat resistance, for example, blended with a plastic material to be molded at a high temperature to give a plastic product an identification function by fluorescence.
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EP04792145A EP1674442A4 (en) | 2003-10-07 | 2004-10-07 | RARE EARTH COMPLEX THERMORESISTANT |
JP2005515243A JPWO2005044770A1 (ja) | 2003-10-07 | 2004-10-07 | 耐熱性を有する希土類錯体 |
US10/574,778 US20070166836A1 (en) | 2003-10-07 | 2004-10-07 | Rare earth complex excellent in thermal resistance |
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Cited By (5)
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JP2006249075A (ja) * | 2005-02-09 | 2006-09-21 | Osaka Univ | 発光性希土類多核錯体 |
JP2007071714A (ja) * | 2005-09-07 | 2007-03-22 | Japan Aerospace Exploration Agency | 感温センサ及び感温塗料 |
WO2012150712A1 (ja) | 2011-05-02 | 2012-11-08 | 国立大学法人北海道大学 | 希土類錯体ポリマー及びプラスチック成形体 |
JP2013063167A (ja) * | 2011-09-16 | 2013-04-11 | Stanley Electric Co Ltd | 液量表示装置、電気湯沸かし器、保温容器、油量計 |
JP5234210B1 (ja) * | 2012-07-20 | 2013-07-10 | 東洋インキScホールディングス株式会社 | 太陽電池封止材用樹脂組成物 |
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FR2917226B1 (fr) * | 2007-06-06 | 2009-09-11 | Inst Nat Sciences Appliq | Procede de marquage de materiaux a base de matrices organiques polymeriques thermoplastiques ou thermodurcissables |
US11113299B2 (en) | 2009-12-01 | 2021-09-07 | Apple Inc. | System and method for metadata transfer among search entities |
FR2995316B1 (fr) * | 2012-09-11 | 2016-01-22 | Centre Nat Rech Scient | Procede de marquage d'au moins un materiau comprenant une matrice solide ou liquide, organique ou minerale, et materiau correspondant |
CN113817461B (zh) * | 2021-10-18 | 2022-10-14 | 中国科学院江西稀土研究院 | 一种稀土掺杂高分子荧光材料及其制备方法 |
CN114381008B (zh) * | 2021-12-28 | 2023-07-07 | 江西师范大学 | 双核稀土配合物及其制备方法和应用 |
CN115850716A (zh) * | 2022-12-02 | 2023-03-28 | 桂林理工大学 | 一种镝-镧异稀土配位聚合物及其分步合成方法与应用 |
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- 2004-10-07 JP JP2005515243A patent/JPWO2005044770A1/ja active Pending
- 2004-10-07 EP EP04792145A patent/EP1674442A4/en not_active Withdrawn
- 2004-10-07 US US10/574,778 patent/US20070166836A1/en not_active Abandoned
Non-Patent Citations (2)
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BRZYSKA W. ET AL.: "Thermal decomposition of rare earth element 2,4-dihydroxybenzoates in air", THERMOCHIMICA ACTA, vol. 211, 1992, pages 199 - 207, XP002987782 * |
GAJADHAR-PLUMER A.S. ET AL.: "One-pot synthesis, structure, and unusual luminescence of novel one-dimensional lanthanide (III)", TETRAMETHOXYBORATES, INORGANIC CHEMISTRY, vol. 38, no. 8, 1999, pages 1745 - 1753, XP002987781 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006249075A (ja) * | 2005-02-09 | 2006-09-21 | Osaka Univ | 発光性希土類多核錯体 |
JP4702887B2 (ja) * | 2005-02-09 | 2011-06-15 | 国立大学法人 奈良先端科学技術大学院大学 | 発光性希土類九核錯体 |
JP2007071714A (ja) * | 2005-09-07 | 2007-03-22 | Japan Aerospace Exploration Agency | 感温センサ及び感温塗料 |
WO2012150712A1 (ja) | 2011-05-02 | 2012-11-08 | 国立大学法人北海道大学 | 希土類錯体ポリマー及びプラスチック成形体 |
US9051427B2 (en) | 2011-05-02 | 2015-06-09 | National University Corporation Hokkaido University | Rare-earth complex polymer and plastic molded product |
JP2013063167A (ja) * | 2011-09-16 | 2013-04-11 | Stanley Electric Co Ltd | 液量表示装置、電気湯沸かし器、保温容器、油量計 |
JP5234210B1 (ja) * | 2012-07-20 | 2013-07-10 | 東洋インキScホールディングス株式会社 | 太陽電池封止材用樹脂組成物 |
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WO2005044770B1 (ja) | 2005-07-14 |
EP1674442A4 (en) | 2007-01-10 |
JPWO2005044770A1 (ja) | 2007-07-19 |
US20070166836A1 (en) | 2007-07-19 |
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