CN106243155A - One eka-iridium phosphor material and preparation method thereof - Google Patents

One eka-iridium phosphor material and preparation method thereof Download PDF

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CN106243155A
CN106243155A CN201610635910.6A CN201610635910A CN106243155A CN 106243155 A CN106243155 A CN 106243155A CN 201610635910 A CN201610635910 A CN 201610635910A CN 106243155 A CN106243155 A CN 106243155A
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iridium
phosphor material
quinoline
biphenyl
bbphq
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李�杰
常桥稳
晏彩先
刘伟平
陈家林
姜婧
叶青松
余娟
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Kunming Institute of Precious Metals
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Kunming Institute of Precious Metals
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F15/00Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
    • C07F15/0006Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table compounds of the platinum group
    • C07F15/0033Iridium compounds
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    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/06Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials

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Abstract

The present invention relates to eka-iridium phosphor material and preparation method thereof, it is characterized in that with 2 (3 biphenyl) quinoline be main part, with acetylacetone,2,4-pentanedione (Hacac), 2, 2, 6, 6 dipivaloylmethanes (Hthd) or 2 pyridine carboxylic acids (Hpic) are assistant ligand, the structure such as following formula of three kinds of described iridium phosphor materials shows, they are two [2 (3 biphenyl) quinoline] acetyl acetone iridium respectively, two [2 (3 biphenyl) quinoline] (2, 2, 6, 6 dipivaloylmethanes) close iridium and two [2 (3 biphenyl) quinoline] (2 pyridine carboxylic acids) conjunction iridium, its maximum emission wavelength is respectively 602nm, 606nm, 584nm, its glow color is respectively redness, redness and yellow, and report the preparation method of this eka-iridium phosphor material,L^X is acac, tmd and pic respectively.

Description

One eka-iridium phosphor material and preparation method thereof
Technical field
The present invention relates to electromechanical phosphorescent material field, particularly iridium phosphor material and preparation method thereof.
Background technology
Organic electroluminescence device (organic light-emitting diodes, OLEDs) is to convert electrical energy into light Can device, as the flat faced display of a new generation, owing to having that energy consumption is low, self-luminous, deflection, thickness is thin, use temperature Wide ranges, can realize Panchromatic great-arear and show and can be with the advantage such as integrated circuit driving voltage matches, it has been at present One of study hotspot becoming flat display field.
Luminous organic material, through exploitation for many years, has gradually moved towards consumer goods market, from undersized from laboratory MP3, digital camera waits until large-sized television set etc., and OLED reaches its maturity as novel flat-plate Display Technique.Such as, 2008 Year, it is thick that Sony company releases 28in, 3mm, and the organic light emission coloured plate TV of megabit one contrast indicates OLED technology Third generation flat pannel display strides forward to practical further.
Organometallic complex has the advantage of uniqueness as electroluminescent organic material, such as high brightness, high efficiency, luminescence Color covers face width etc., and the transient metal complex phosphor material developed rapidly the most in recent years is that one is the most potential Material.Wherein, the heat stability that Ir (III) coordination compound has had, relatively short lifetime of excited state, high luminous efficiency, with And many advantages such as glow color easily regulation and become the study hotspot in electroluminescent material field.Although iridium phosphor material Show at OLED and be widely applied with lighting field, but developed new and effective iridium phosphor material and still there is important meaning Justice.
Summary of the invention
It is an object of the invention to provide eka-iridium phosphor material and a preparation method.
The eka-iridium phosphor material that the present invention provides, their structure is:
Wherein L^X is respectively acetylacetone,2,4-pentanedione (acac), 2,2,6,6-dipivaloylmethane (tmd), 2-pyridine carboxylic acid (pic).
Further, described iridium phosphor material: two [2-(3-biphenyl) quinoline] acetyl acetone iridium, its emission maximum ripple A length of 602nm, for red iridium phosphor material, its structural formula is as follows:
Further, described iridium phosphor material: two [2-(3-biphenyl) quinoline] (2,2,6,6-dipivaloylmethane) closes iridium, Its maximum emission wavelength is 606nm, and for red iridium phosphor material, its structural formula is as follows:
Further, described iridium phosphor material: two [2-(3-biphenyl) quinoline] (2-pyridine carboxylic acid) closes iridium, and its maximum is sent out The a length of 584nm of ejected wave, for yellow iridium phosphor material, its structural formula is as follows:
Present invention also offers the preparation method of above-mentioned iridium phosphor material, described preparation method includes step in detail below:
Step one is the synthesis of 2-(3-biphenyl) quinoline, and route is as follows:
The synthetic route of 2-(3-biphenyl) quinoline
Specifically: take 3-phenyl phenylboric acid and be dissolved in the mixed liquor of toluene, ethanol, deionized water, addition 2-chloroquinoline, four (triphenyl phosphorus) palladium and natrium carbonicum calcinatum, obtain, by suzuki coupling reaction, the quinoline that structural formula is following (Bbphq):
Step 2 is dimer (Bbphq)2Ir2Cl2(Bbphq)2Synthesis, route is as follows:
(Bbphq)2Ir2Cl2(Bbphq)2Synthetic route
Specifically: at N2Under protection, quinoline Bibph is dissolved in ethylene glycol monoethyl ether, adds iridous chloride water Compound, deionized water, reacting by heating obtains the dichloro bridge coordination compound that structural formula is as follows:
Step 3 is the preparation method of iridium phosphor material, and syntheti c route is as follows:
Reagents and conditions:(a)Na2CO3,acacH,130℃,overnight;(b)Na2CO3,2,2, 6,6-teramethyl-3,5-
heptanedione,130℃,overnight;(c)Na2CO3,picolinic acid,130℃,overnight;
Specifically: at N2Under protection, above-mentioned dichloro bridge coordination compound is dissolved in ethylene glycol monoethyl ether, divides in the basic conditions Other and assistant ligand heating reflux reaction obtains described iridium phosphor material.
Further, in such scheme,
In step (1), it is preferable that 3-phenyl phenylboric acid, 2-chloroquinoline, four (triphenyl phosphorus) palladium, the use of natrium carbonicum calcinatum Amount ratio is: 12:10:0.3:14, and the coupling reaction time is 4~12h;
In step (2), it is preferable that quinoline Bbphq, IrCl3·H2O, ethylene glycol monoethyl ether, the use of deionized water Amount ratio is: 25:10:120:40, at N2In 120 DEG C of back flow reaction 24h under protection;
In step (3), it is preferable that dichloro bridge coordination compound, ethylene glycol monoethyl ether, Anhydrous potassium carbonate, the consumption of assistant ligand Ratio is: 10:250:50:22, at N2In 130 DEG C of back flow reaction 24h under protection.
The present invention use proton nmr spectra (1H NMR), mass spectrum, infrared spectrum confirm the knot of part and complex of iridium Structure, obtains the optical physics parameter of iridium phosphorescent complexes by photoluminescence spectra.
Accompanying drawing explanation
The photoluminescence spectra of tri-kinds of Novel iridium coordination compounds of Fig. 1.
Detailed description of the invention
Embodiment one:
The synthesis of part Bbphq:
Take 3-phenyl phenylboric acid (24.45g, 124mmol), 2-chloroquinoline (18.35g, 112mmol), four (triphenyl phosphorus) Palladium (1.25g, 1.12mmol), Anhydrous potassium carbonate (30.8g, 224mmol), toluene 200mL, ethanol 100mL, deionized water 50mL Join in there-necked flask, N2Under protection, 90 DEG C of back flow reaction 4hrs.It is cooled to separatory after room temperature, washes organic facies 3 times, anhydrous MgSO4It is dried.After being filtered to remove solvent, residue petroleum ether and dichloromethane (volume ratio 5:1) are crossed post and are obtained faint yellow oily Thing 26.5g, productivity 62%.1H NMR(500MHz,CDCl3) δ (ppm): 8.45 (t, J=1.8Hz, 1H), 8.24 (t, J= 9.0Hz, 2H), 8.19 8.11 (m, 1H), 8.07 (t, J=6.5Hz, 1H), 7.93 (dd, J=3.8Hz, 1H), 7.84 (dd, J =1.3Hz, 1H), 7.79 7.70 (m, 3H), 7.66 7.61 (m, 1H), 7.58 7.48 (m, 3H), 7.29 7.21 (m, 1H) .IR(KBr,cm-1):2932(C-H),1662,1480(Ar),1232(C-N),1140(C-C).ESI-MS:m/z 282[M+H ]+.
Embodiment two:
Dimer (Bbphq)2Ir2Cl2(Bbphq)2Synthesis:
In the 500mL reaction bulb containing 120mL ethylene glycol monoethyl ether add 2-(3-biphenyl) quinoline (15g, 53.3mmol), iridous chloride (7.6g, 21.3mmol), afterwards addition deionized water 40mL, N2Under protection, 120 DEG C of back flow reaction 24hrs.Being cooled to room temperature, filter, filter cake washs with ethanol and water respectively, and 60 DEG C of vacuum drying 24hrs, the product obtained is no longer It is purified, is directly used in next step reaction, productivity 85%.
Embodiment three:
Iridium phosphor material (Bbphq)2The synthetic route of Ir (acac)
Take dimer (Bbphq)2Ir2Cl2(Bbphq)2(2g, 1.27mmol), acetylacetone,2,4-pentanedione (0.28g, 2.8mmol), nothing Aqueous sodium carbonate (0.66g, 6.2mmol), joins in the 250mL there-necked flask containing 60mL ethylene glycol monoethyl ether, and nitrogen is put in punching repeatedly Three times, N2Under protection, 130 DEG C of back flow reaction 24hrs.Being cooled to room temperature, mixture is poured in a large amount of water, filters, and filter cake is dried Complex of iridium 1.4g, productivity: 65% is obtained afterwards with after dichloromethane and recrystallizing methanol.1H NMR(500MHz,CDCl3)δ(ppm): 8.60 8.49 (m, 2H), 8.21 (q, J=8.8Hz, 4H), 8.05 (d, J=1.9Hz, 2H), 7.88 7.78 (m, 2H), 7.59 (dt, J=8.2,4H), 7.53 7.47 (m, 4H), 7.43 7.33 (m, 4H), 7.30 7.22 (m, 3H), 6.90 (dd, J= 8.0,2H), 6.65 (dd, J=7.9,2H), 4.69 (s, 1H), 1.54 (d, J=6.9Hz, 8H) .IR (KBr, cm-1):2955, 2863(C-H),1605,1578(Ar),1236(C-N),1137(C-C).ESI-MS:m/z 852[M-H]+,564[(Bbphq)2+ H]+.
Embodiment four:
Iridium phosphor material (Bbphq)2The synthetic route of Ir (tmd)
Take dimer (Bbphq)2Ir2Cl2(Bbphq)2(2g, 1.27mmol), 2,2,6,6-dipivaloylmethane (0.52g, 2.8mmol), natrium carbonicum calcinatum (0.66g, 6.2mmol), join the 250mL tri-mouthfuls containing 60mL ethylene glycol monoethyl ether In Ping, punching puts nitrogen three times repeatedly, N2Under protection, 130 DEG C of back flow reaction 24hrs.Being cooled to room temperature, mixture pours a large amount of water into In, filtering, filter cake obtains complex of iridium 1.8g, productivity: 73% with after dichloromethane and recrystallizing methanol after drying.1H NMR (500MHz,CDCl3) δ (ppm): 8.41 (d, J=8.8Hz, 2H), 8.24 8.14 (m, 4H), 8.07 (d, J=1.9Hz, 2H), 7.77 (dt, J=9.4Hz, 2H), 7.63 (dt, J=8.2,4H), 7.46 (ddd, J=6.9,2H), 7.41 7.34 (m, 6H), 7.30 7.21 (m, 3H), 6.91 (dt, J=5.5,2H), 6.73 (dd, J=3.7Hz, 2H), 4.92 (d, J=3.5Hz, 1H), 0.64 (d, J=3.4Hz, 18H) .IR (KBr, cm-1):2921(C-H),1602,1582(Ar),1235(C-N),1132(C-C) .ESI-MS:m/z 936[M-H]+,746[M-Ir]+,563[(Bbphq)2]+.
Embodiment five:
Iridium phosphor material (Bbphq)2The synthetic route of Ir (pic)
Take dimer (Bbphq)2Ir2Cl2(Bbphq)2(2g, 1.27mmol), 2-pyridine carboxylic acid (0.34g, 2.8mmol), Natrium carbonicum calcinatum (0.66g, 6.2mmol), joins in the 250mL there-necked flask containing 60mL ethylene glycol monoethyl ether, and nitrogen is put in punching repeatedly Gas three times, N2Under protection, 130 DEG C of back flow reaction 24hrs.Being cooled to room temperature, mixture is poured in a large amount of water, filters, and filter cake dries Complex of iridium 1.6g, productivity: 68% is obtained with after dichloromethane and recrystallizing methanol after Gan.1H NMR(500MHz,CDCl3)δ(ppm): 8.82 (d, J=8.9Hz, 1H), 8.26 8.15 (m, 5H), 8.07 8.02 (m, 2H), 7.84 (ddd, J=7.8Hz, 1H), 7.76 (dd, J=8.1Hz, 1H), 7.72 (dd, J=8.0Hz, 1H), 7.69 7.62 (m, 3H), 7.59 7.51 (m, 3H), 7.47 7.41 (m, 3H), 7.41 7.33 (m, 3H), 7.32 7.25 (m, 4H), 7.06 (dt, J=5.0Hz, 2H), 6.91 (ddd, J=1.7Hz, 2H), 6.43 6.38 (m, 1H) .IR (KBr, cm-1): 2968,2924 (C-H), 1654 (C=O), 1636, 1600,1583,1448(Ar),1236(C-N),1149(C-C).ESI-MS:m/z 876[M+H]+,753[(Bbphq)2Ir+H ]+.
Iridium phosphor material (Bbphq)2Ir(acac)、(Bbphq)2Ir(tmd)、(Bbphq)2The luminescence generated by light light of Ir (pic) Spectrum as it is shown in figure 1, the most each coordination compound at room temperature has a stronger phosphorescent emissions, launch wavelength from 550nm to 750nm。(Bbphq)2The maximum emission wavelength of Ir (acac) is 602nm, for red iridium phosphor material, (Bbphq)2Ir's (tmd) Maximum emission wavelength is 606nm, for red iridium phosphor material, (Bbphq)2The maximum emission wavelength of Ir (pic) is 584nm, for Yellow iridium phosphor material.

Claims (5)

1. an eka-iridium phosphor material, it is characterised in that described structure is as follows, wherein L^X be respectively acetylacetone,2,4-pentanedione (acac), 2,2, 6,6-dipivaloylmethanes (tmd) or 2-pyridine carboxylic acid (pic),
Iridium phosphor material the most according to claim 1, it is characterised in that two [2-(3-biphenyl) quinoline] acetyl acetone iridium Structure as follows, its maximum emission wavelength is 602nm, for red iridium phosphor material,
Iridium phosphor material the most according to claim 1, it is characterised in that two [2-(3-biphenyl) quinoline] (2,2,6,6-tetra- Methyl heptadione) close iridium structure as follows, its maximum emission wavelength is 606nm, for redness iridium phosphor material,
4. according to the iridium phosphor material described in claim 1, it is characterised in that two [2-(3-biphenyl) quinoline] (2-pyridine carboxylic acid) closes The structure of iridium is following 5, its maximum emission wavelength is 584nm, for yellow iridium phosphor material,
5. the preparation method of iridium phosphor material described in claim 1, it is characterised in that with toluene, ethanol, the mixing of deionized water Liquid is reaction system;With 3-phenyl phenylboric acid, 2-chloroquinoline as raw material, obtain quinoline by suzuki coupling reaction (Bbphq);Under nitrogen protection, Bbphq is dissolved in ethylene glycol monoethyl ether, adds hydrated iridium trichloride, deionized water, heating Reaction obtains corresponding iridium chlorine bridge coordination compound;With this iridium chlorine bridge coordination compound for reactant the most respectively with assistant ligand Acetylacetone,2,4-pentanedione, 2,2,6,6-dipivaloylmethane or 2-pyridine carboxylic acid heating reflux reaction obtain iridium phosphor material.
CN201610635910.6A 2016-08-05 2016-08-05 One eka-iridium phosphor material and preparation method thereof Pending CN106243155A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011087070A1 (en) * 2010-01-15 2011-07-21 富士フイルム株式会社 Organic electroluminescent element
KR20150030511A (en) * 2013-09-12 2015-03-20 덕산네오룩스 주식회사 Organic electronic element using a compound for organic electronic element, and an electronic device thereof
JP2015093938A (en) * 2013-11-12 2015-05-18 三菱化学株式会社 Composition for organic electroluminescent element, organic electroluminescent element, display device, and illumination device
CN104628787A (en) * 2015-01-22 2015-05-20 昆明贵金属研究所 Green-emission iridium phosphors complex and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011087070A1 (en) * 2010-01-15 2011-07-21 富士フイルム株式会社 Organic electroluminescent element
KR20150030511A (en) * 2013-09-12 2015-03-20 덕산네오룩스 주식회사 Organic electronic element using a compound for organic electronic element, and an electronic device thereof
JP2015093938A (en) * 2013-11-12 2015-05-18 三菱化学株式会社 Composition for organic electroluminescent element, organic electroluminescent element, display device, and illumination device
CN104628787A (en) * 2015-01-22 2015-05-20 昆明贵金属研究所 Green-emission iridium phosphors complex and preparation method thereof

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