CN105732956A - Printable red light emitting polymer and preparing method thereof - Google Patents

Printable red light emitting polymer and preparing method thereof Download PDF

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CN105732956A
CN105732956A CN201610231736.9A CN201610231736A CN105732956A CN 105732956 A CN105732956 A CN 105732956A CN 201610231736 A CN201610231736 A CN 201610231736A CN 105732956 A CN105732956 A CN 105732956A
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red
red light
emitting polymer
light emitting
polymer
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CN105732956B (en
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赖文勇
曹四振
俞舟
张�浩
黄维
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Nanjing Post and Telecommunication University
Nanjing University of Posts and Telecommunications
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    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G61/00Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
    • C08G61/02Macromolecular compounds containing only carbon atoms in the main chain of the macromolecule, e.g. polyxylylenes
    • C08G61/04Macromolecular compounds containing only carbon atoms in the main chain of the macromolecule, e.g. polyxylylenes only aliphatic carbon atoms
    • C08G61/06Macromolecular compounds containing only carbon atoms in the main chain of the macromolecule, e.g. polyxylylenes only aliphatic carbon atoms prepared by ring-opening of carbocyclic compounds
    • C08G61/08Macromolecular compounds containing only carbon atoms in the main chain of the macromolecule, e.g. polyxylylenes only aliphatic carbon atoms prepared by ring-opening of carbocyclic compounds of carbocyclic compounds containing one or more carbon-to-carbon double bonds in the ring
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    • 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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    • C09K11/00Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/06Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2261/00Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
    • C08G2261/30Monomer units or repeat units incorporating structural elements in the main chain
    • C08G2261/33Monomer units or repeat units incorporating structural elements in the main chain incorporating non-aromatic structural elements in the main chain
    • C08G2261/332Monomer units or repeat units incorporating structural elements in the main chain incorporating non-aromatic structural elements in the main chain containing only carbon atoms
    • C08G2261/3324Monomer units or repeat units incorporating structural elements in the main chain incorporating non-aromatic structural elements in the main chain containing only carbon atoms derived from norbornene
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2261/00Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
    • C08G2261/30Monomer units or repeat units incorporating structural elements in the main chain
    • C08G2261/37Metal complexes
    • C08G2261/374Metal complexes of Os, Ir, Pt, Ru, Rh, Pd
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    • C08G2261/00Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
    • C08G2261/40Polymerisation processes
    • C08G2261/41Organometallic coupling reactions
    • C08G2261/418Ring opening metathesis polymerisation [ROMP]
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    • C08G2261/00Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
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    • C09K2211/00Chemical nature of organic luminescent or tenebrescent compounds
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    • C09K2211/1018Heterocyclic compounds
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    • C09K2211/00Chemical nature of organic luminescent or tenebrescent compounds
    • C09K2211/18Metal complexes
    • C09K2211/185Metal complexes of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
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Abstract

The invention relates to a printable red light emitting polymer and a preparing method thereof.The red light emitting polymer is prepared through ring-opening metathesis polymerization, has a norbornene derivative main chain and has red light iridium complex on a side chain.The soft polymer main chain is beneficial for improving viscosity, film-forming performance and flexibility of the material, the material is more suitable for ink jet printed films, and a large-area soft device can be prepared; the red light iridium complex is beneficial for efficient light emitting, while improving material solubility, solubilizing groups can effectively control mutual action among molecules to control annihilation of the triplet state, and light emitting efficiency is improved.The structural formula of the red light emitting polymer is as follow (see the formula in the description).The material has the advantages of being easy to purify, high in yield and heat stability and good in film-forming performance, and a large-area soft device can be prepared through an ink-jet printing method.

Description

One can print red-light-emitting polymer and preparation method thereof
Technical field
The invention belongs to photoelectric material and applied technical field, be specifically related to a kind of electroluminescent organic material, more Relate to one body and can print red-light-emitting polymer and preparation method and application.
Background technology
Organic Light Emitting Diode (OLED) gives large area display and luminaire many advantages, including driving The switch time etc. that galvanic electricity forces down, efficiency is high, lightweight and shorter.For preparing the material of OLED luminescent layer Material includes fluorescence and phosphor material.Comparing fluorescent material, OLED based on phosphor material shows higher Efficiency, this is owing to efficiently altering more between the strong SO coupling permission system of heavy metal, it can be ensured that OLED Inside can form singletstate and triplet excitons, so that its internal quantum is up to 100%.Another Aspect, due to the heavy atoms effect of iridium, can make coordination compound produce the strongest Quantum geometrical phase and be conducive to phosphorescence to send out Penetrate;And, the d orbit splitting in iridium metals ion is relatively big, can avoid the MLCT phase interaction with coordination compound With, thus improve phosphorescent emissions efficiency.Therefore, complex of iridium is considered as that development OLED has prospect very much Luminescent material.
The method preparing OLED luminescent layer at present has vapour deposition method and solwution method.Based on little molecule complex of iridium OLED luminescent layer is mainly prepared by evaporation, and luminescent layer based on dendrimer and polymer is the most logical Cross solwution method to prepare.Compared to vapour deposition method, solwution method can simplify the structure of large-area OLEDs and reduce into This.Wherein, inkjet printing once can deposit multiple material, simplifies process step, is more suitable for large-scale production. But, inkjet printing has the highest requirement to the viscosity of material.And relatively small molecule, polymer possesses preferably Viscosity, therefore complex of iridium based on polymer is more suitable for inkjet printing masking.
The present invention, by designing the optimization of molecular structure, have developed novel printed red-light-emitting polymer, and This polymer of successful print on a flexible substrate.This red-light-emitting polymer is to be prepared by ring-opening metathesis polymerization, tool Norborene is had to derive main chain and be connected with the side chain of complexes of red light iridium.Main polymer chain is conducive to improving material Viscosity, film property and flexibility, so that material is more suitable for inkjet printing, can realize large area flexible device Preparation;Complexes of red light iridium contributes to realizing High Efficiency Luminescence, and solubilizing group therein is in the dissolving improving material While property, it is also possible to the intermolecular interaction of effective control, suppress triplet state-triplet state annihilation, carry High-luminous-efficiency.
Summary of the invention
Technical problem: the rise of inkjet printing, brings dawn to the large-scale production of OLED.But, spray Ink prints viscosity and dissolubility for material higher requirement.It is desirable to provide one can print HONGGUANG Polymer and preparation method thereof, improves the viscosity of luminescent material, dissolubility and the characteristics of luminescence etc., is allowed to applicable In making large area flexible electronic device by ink jet printing mode.
Technical scheme: the present invention proposes one can print red-light-emitting polymer and preparation method thereof.
This red-light-emitting polymer has norborene and derives on main chain, and its side chain containing complexes of red light iridium, this material Material polymer represented by following formula I r-P:
Wherein 0≤n≤100, and be natural number, R is selected from following a kind of structure, 1≤m≤10, and m For natural number,
This red-light-emitting polymer is prepared by ring-opening metathesis polymerization, and its synthetic route is as follows:
The synthesis of Ir-P
Step 1: by complex of iridium presoma Ir-OH, outward-5-norborene-2-carboxylic acid and (N, N-dimethylamino) Pyridine is put in reaction tube, dissolves dicyclohexylcarbodiimide with dichloromethane and add reaction tube after substituting nitrogen, Reacting 20-30h under room temperature, question response obtains complex of iridium Ir-M through concentration and chromatography after terminating.
Step 2: first take Grubbs'3rd initiator in glove box in small test tube, dissolve with oxolane Join to obtain initiator solution, with standby;Then Ir-M is put in reaction tube, after substituting nitrogen, add tetrahydrochysene furan Mutter, last quickly injection initiator solution in reaction tube, react 1-3h, question response uses vinyl after terminating Ether cancellation, more concentrated, settle in methanol, sucking filtration obtains polymer Ir-P.
Beneficial effect: the printed red-light-emitting polymer of the present invention possesses following advantage: 1) main polymer chain Be conducive to improving the viscosity of material, film property, so that material is more suitable for ink jet printing mode masking, can be real The preparation of existing large area flexible device;2) complexes of red light iridium of side chain contributes to realizing high efficiency luminescence;3) On side chain, the solubilizing group in complexes of red light iridium is deliquescent it is also possible to effectively control at raising material Intermolecular interaction, suppresses triplet state-triplet state annihilation, improves luminous efficiency.
Accompanying drawing explanation
Fig. 1 is Ir-M's1H NMR spectra.
Fig. 2 is the MALDI-TOF spectrogram of Ir-M.
Fig. 3 is Ir-P Absorption and emission spectra in dichloromethane solution.
Fig. 4 is the thermogravimetric curve of Ir-P.
Detailed description of the invention
The printed red-light-emitting polymer of the present invention is prepared by ring-opening metathesis polymerization, has norborene derivative main Chain and the side chain being connected with complexes of red light iridium.Main polymer chain is conducive to improving viscosity and the film property of material, from And make material be more suitable for ink jet printing mode masking, the preparation of large area flexible device can be realized;HONGGUANG iridium is joined Compound can realize High Efficiency Luminescence, and solubilizing group therein improving the deliquescent of material it is also possible to The intermolecular interaction of effective control, suppresses triplet state-triplet state annihilation, improves luminous efficiency.This is red The general structure of photopolymer is as follows:
Wherein 0≤n≤100, and be natural number, R is selected from following a kind of structure, 1≤m≤10, and m For natural number,
This red-light-emitting polymer is prepared by ring-opening metathesis polymerization, and its synthetic route is as follows:
Below by way of some embodiments, the present invention will be further described, but embodiment is not intended to containing of the present invention Scope.
Embodiment 1:
The synthesis of Ir-M
Reaction condition one: by Ir-OH (110mg, 0.072mmol), outer-5-norborene-2-carboxylic acid (12mg, 0.087mmol) put into 10mL reaction tube with (N, N-dimethylamino) pyridine (4.7mg, 0.038mmol) In, dissolve dicyclohexylcarbodiimide (18.6mg, 0.09mmol) with 2mL dichloromethane after substituting nitrogen Add reaction tube, under room temperature react 24h, question response terminate after through concentrate and chromatography obtain Ir-M (95mg, 80%).
Reaction condition two: by Ir-OH (100mg, 0.066mmol), outer-5-norborene-2-carboxylic acid (10mg, 0.072mmol) put into 10mL reaction tube with (N, N-dimethylamino) pyridine (4mg, 0.033mmol) In, dissolve dicyclohexylcarbodiimide (15mg, 0.073mmol) with 1.5mL dichloromethane after substituting nitrogen Add reaction tube, under room temperature react 20h, question response terminate after through concentrate and chromatography obtain Ir-M (81mg, 75%).
Reaction condition three: by Ir-OH (124mg, 0.081mmol), outer-5-norborene-2-carboxylic acid (17mg, 0.122mmol) put into 10mL reaction tube with (N, N-dimethylamino) pyridine (7mg, 0.057mmol) In, dissolve dicyclohexylcarbodiimide (25mg, 0.122mmol) with 2.5mL dichloromethane after substituting nitrogen Adding reaction tube, react 28h under room temperature, question response obtains Ir-M (104 through concentration and chromatography after terminating Mg, 78%).
1H NMR(400MHz,CDCl3): δ 8.71 (s, 1H), 8.57 (s, 1H), 8.28 (t, J=17.1Hz, 3H), 8.09 (t, J=8.1Hz, 2H), 7.94 (d, J=4.4Hz, 1H), 7.85 7.51 (m, 16H), 7.46 7.29(m,4H),7.24–7.09(m,6H),7.04–6.85(m,6H),6.81–6.72(m,2H),6.68– 6.42 (m, 3H), 6.25 (s, 2H), 6.10 (d, J=18.0Hz, 2H), 4.98 (s, 2H), 3.95 3.63 (m, 6H), 3.02 (dd, J=58.3,39.1Hz, 4H), 2.29 (d, J=17.8Hz, 1H), 2.03 1.68 (m, 3H), 1.34 (d, J=10.7Hz, 16H), 0.98 0.89 (m, 12H).
Embodiment 2:
The synthesis of Ir-P
Reaction condition: first take Grubbs'3rd initiator (6mg, 0.0067mmol) in glove box in 5 In mL small test tube, with 1mL oxolane dissolve join 6.7 × 10-3The initiator solution of mol/L, in case With;Then Ir-M (110mg, 0.067mmol) is put in 5mL reaction tube, add after substituting nitrogen 0.5mL oxolane, last quickly injection 0.1mL initiator solution in reaction tube, reacts 1.5h, treats Reaction use vinyl ethyl ether cancellation after terminating, more concentrated, sedimentation in methanol, sucking filtration obtain Ir-P (90mg, 82%).Mole Mw=19297, molecular weight distribution index is 1.59.

Claims (2)

1. one kind can be printed red-light-emitting polymer, it is characterised in that it is derivative main that this red-light-emitting polymer has norborene Containing complexes of red light iridium on chain, and its side chain, this red-light-emitting polymer is the polymer represented by Ir-P:
Wherein 0≤n≤100, and be natural number, R is selected from following a kind of structure, 1≤m≤10, and m For natural number,
2. the preparation method that can print red-light-emitting polymer as claimed in claim 1, it is characterised in that should Method is prepared by ring-opening metathesis polymerization, and its synthetic route is as follows:
The synthesis of Ir-P
Step 1: by complex of iridium presoma (Ir-OH), outer-5-norborene-2-carboxylic acid and (N, N-diformazan Amino) pyridine puts in reaction tube, and dissolve dicyclohexylcarbodiimide with dichloromethane after substituting nitrogen and add anti- Ying Guan, reacts 20-30h under room temperature, question response obtains complex of iridium (Ir-M) through concentration and chromatography after terminating;
Step 2: first take Grubbs'3rd initiator in glove box in small test tube, dissolve with oxolane Join to obtain initiator solution, with standby;Then Ir-M is put in reaction tube, after substituting nitrogen, add tetrahydrochysene furan Mutter, last quickly injection initiator solution in reaction tube, react 1-3h, question response uses vinyl after terminating Ether cancellation, more concentrated, settle in methanol, sucking filtration obtains polymer Ir-P.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108912313A (en) * 2018-06-19 2018-11-30 南京邮电大学 A kind of printable blue light frequency-doubling and the preparation method and application thereof
CN111393615A (en) * 2020-03-18 2020-07-10 中国科学院长春应用化学研究所 Fluorescent high-molecular compound based on polynorbornene main chain and space charge transfer luminescence, preparation method and luminescent device

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WO2004073030A2 (en) * 2003-02-06 2004-08-26 Georgia Tech Research Corporation Metal 8-hydroxyquinoline -functionalized polymers and related materials and methods of making and using the same
KR20050058879A (en) * 2003-12-12 2005-06-17 금호석유화학 주식회사 A new type of norbornene monomers and polymers for blue light emitting material

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WO2004073030A2 (en) * 2003-02-06 2004-08-26 Georgia Tech Research Corporation Metal 8-hydroxyquinoline -functionalized polymers and related materials and methods of making and using the same
KR20050058879A (en) * 2003-12-12 2005-06-17 금호석유화학 주식회사 A new type of norbornene monomers and polymers for blue light emitting material

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SIZHEN CAO ET. AL.: ""Distinct phosphorescence enhancement of red-emitting iridium(III) complexes with formyl-functionalized phenylpyridine ligands"", 《JOURNAL OF MATERIALS CHEMISTRY C》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108912313A (en) * 2018-06-19 2018-11-30 南京邮电大学 A kind of printable blue light frequency-doubling and the preparation method and application thereof
CN111393615A (en) * 2020-03-18 2020-07-10 中国科学院长春应用化学研究所 Fluorescent high-molecular compound based on polynorbornene main chain and space charge transfer luminescence, preparation method and luminescent device

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