EP1519929A1 - 2,1,3-benzothiadiazole als elektronische wirkkomponenten - Google Patents
2,1,3-benzothiadiazole als elektronische wirkkomponentenInfo
- Publication number
- EP1519929A1 EP1519929A1 EP03761466A EP03761466A EP1519929A1 EP 1519929 A1 EP1519929 A1 EP 1519929A1 EP 03761466 A EP03761466 A EP 03761466A EP 03761466 A EP03761466 A EP 03761466A EP 1519929 A1 EP1519929 A1 EP 1519929A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- same
- formula
- atoms
- compounds
- different
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- PDQRQJVPEFGVRK-UHFFFAOYSA-N 2,1,3-benzothiadiazole Chemical class C1=CC=CC2=NSN=C21 PDQRQJVPEFGVRK-UHFFFAOYSA-N 0.000 title abstract description 35
- 150000001875 compounds Chemical class 0.000 claims abstract description 71
- 239000000463 material Substances 0.000 claims description 39
- 125000004432 carbon atom Chemical group C* 0.000 claims description 19
- -1 aromatic radicals Chemical class 0.000 claims description 16
- 229910052731 fluorine Inorganic materials 0.000 claims description 14
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 12
- 125000003118 aryl group Chemical group 0.000 claims description 9
- 125000001072 heteroaryl group Chemical group 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 8
- 125000001424 substituent group Chemical group 0.000 claims description 8
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 claims description 6
- 125000003545 alkoxy group Chemical group 0.000 claims description 6
- 125000006165 cyclic alkyl group Chemical group 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 125000002950 monocyclic group Chemical group 0.000 claims description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 5
- FCEHBMOGCRZNNI-UHFFFAOYSA-N 1-benzothiophene Chemical compound C1=CC=C2SC=CC2=C1 FCEHBMOGCRZNNI-UHFFFAOYSA-N 0.000 claims description 4
- UJOBWOGCFQCDNV-UHFFFAOYSA-N 9H-carbazole Chemical compound C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 claims description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 4
- SIKJAQJRHWYJAI-UHFFFAOYSA-N Indole Chemical compound C1=CC=C2NC=CC2=C1 SIKJAQJRHWYJAI-UHFFFAOYSA-N 0.000 claims description 4
- KYQCOXFCLRTKLS-UHFFFAOYSA-N Pyrazine Chemical compound C1=CN=CC=N1 KYQCOXFCLRTKLS-UHFFFAOYSA-N 0.000 claims description 4
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 4
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 claims description 4
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 claims description 4
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 claims description 4
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 claims description 4
- WDECIBYCCFPHNR-UHFFFAOYSA-N chrysene Chemical compound C1=CC=CC2=CC=C3C4=CC=CC=C4C=CC3=C21 WDECIBYCCFPHNR-UHFFFAOYSA-N 0.000 claims description 4
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 claims description 4
- YNPNZTXNASCQKK-UHFFFAOYSA-N phenanthrene Chemical compound C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 claims description 4
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 claims description 4
- 150000003254 radicals Chemical class 0.000 claims description 4
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- GOYDNIKZWGIXJT-UHFFFAOYSA-N 1,2-difluorobenzene Chemical compound FC1=CC=CC=C1F GOYDNIKZWGIXJT-UHFFFAOYSA-N 0.000 claims description 2
- FKASFBLJDCHBNZ-UHFFFAOYSA-N 1,3,4-oxadiazole Chemical compound C1=NN=CO1 FKASFBLJDCHBNZ-UHFFFAOYSA-N 0.000 claims description 2
- JIHQDMXYYFUGFV-UHFFFAOYSA-N 1,3,5-triazine Chemical compound C1=NC=NC=N1 JIHQDMXYYFUGFV-UHFFFAOYSA-N 0.000 claims description 2
- SXWIAEOZZQADEY-UHFFFAOYSA-N 1,3,5-triphenylbenzene Chemical compound C1=CC=CC=C1C1=CC(C=2C=CC=CC=2)=CC(C=2C=CC=CC=2)=C1 SXWIAEOZZQADEY-UHFFFAOYSA-N 0.000 claims description 2
- WJFKNYWRSNBZNX-UHFFFAOYSA-N 10H-phenothiazine Chemical compound C1=CC=C2NC3=CC=CC=C3SC2=C1 WJFKNYWRSNBZNX-UHFFFAOYSA-N 0.000 claims description 2
- TZMSYXZUNZXBOL-UHFFFAOYSA-N 10H-phenoxazine Chemical compound C1=CC=C2NC3=CC=CC=C3OC2=C1 TZMSYXZUNZXBOL-UHFFFAOYSA-N 0.000 claims description 2
- OOLUVSIJOMLOCB-UHFFFAOYSA-N 1633-22-3 Chemical compound C1CC(C=C2)=CC=C2CCC2=CC=C1C=C2 OOLUVSIJOMLOCB-UHFFFAOYSA-N 0.000 claims description 2
- SNFCXVRWFNAHQX-UHFFFAOYSA-N 9,9'-spirobi[fluorene] Chemical compound C12=CC=CC=C2C2=CC=CC=C2C21C1=CC=CC=C1C1=CC=CC=C21 SNFCXVRWFNAHQX-UHFFFAOYSA-N 0.000 claims description 2
- GJCOSYZMQJWQCA-UHFFFAOYSA-N 9H-xanthene Chemical compound C1=CC=C2CC3=CC=CC=C3OC2=C1 GJCOSYZMQJWQCA-UHFFFAOYSA-N 0.000 claims description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 2
- PCNDJXKNXGMECE-UHFFFAOYSA-N Phenazine Natural products C1=CC=CC2=NC3=CC=CC=C3N=C21 PCNDJXKNXGMECE-UHFFFAOYSA-N 0.000 claims description 2
- CZPWVGJYEJSRLH-UHFFFAOYSA-N Pyrimidine Chemical compound C1=CN=CN=C1 CZPWVGJYEJSRLH-UHFFFAOYSA-N 0.000 claims description 2
- NGDCLPXRKSWRPY-UHFFFAOYSA-N Triptycene Chemical compound C12=CC=CC=C2C2C3=CC=CC=C3C1C1=CC=CC=C12 NGDCLPXRKSWRPY-UHFFFAOYSA-N 0.000 claims description 2
- RFRXIWQYSOIBDI-UHFFFAOYSA-N benzarone Chemical compound CCC=1OC2=CC=CC=C2C=1C(=O)C1=CC=C(O)C=C1 RFRXIWQYSOIBDI-UHFFFAOYSA-N 0.000 claims description 2
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- RMBPEFMHABBEKP-UHFFFAOYSA-N fluorene Chemical compound C1=CC=C2C3=C[CH]C=CC3=CC2=C1 RMBPEFMHABBEKP-UHFFFAOYSA-N 0.000 claims description 2
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- QDLAGTHXVHQKRE-UHFFFAOYSA-N lichenxanthone Natural products COC1=CC(O)=C2C(=O)C3=C(C)C=C(OC)C=C3OC2=C1 QDLAGTHXVHQKRE-UHFFFAOYSA-N 0.000 claims description 2
- PYLWMHQQBFSUBP-UHFFFAOYSA-N monofluorobenzene Chemical compound FC1=CC=CC=C1 PYLWMHQQBFSUBP-UHFFFAOYSA-N 0.000 claims description 2
- 125000001624 naphthyl group Chemical group 0.000 claims description 2
- NIHNNTQXNPWCJQ-UHFFFAOYSA-N o-biphenylenemethane Natural products C1=CC=C2CC3=CC=CC=C3C2=C1 NIHNNTQXNPWCJQ-UHFFFAOYSA-N 0.000 claims description 2
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 claims description 2
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 claims description 2
- 229950000688 phenothiazine Drugs 0.000 claims description 2
- PBMFSQRYOILNGV-UHFFFAOYSA-N pyridazine Chemical compound C1=CC=NN=C1 PBMFSQRYOILNGV-UHFFFAOYSA-N 0.000 claims description 2
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 2
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- FLBAYUMRQUHISI-UHFFFAOYSA-N 1,8-naphthyridine Chemical compound N1=CC=CC2=CC=CN=C21 FLBAYUMRQUHISI-UHFFFAOYSA-N 0.000 claims 1
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- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000013580 millipore water Substances 0.000 description 1
- OKPMSRGLGBBULD-UHFFFAOYSA-N n,n-diphenyl-9,9'-spirobi[fluorene]-1-amine Chemical compound C1=CC=CC=C1N(C=1C=2C3(C4=CC=CC=C4C4=CC=CC=C43)C3=CC=CC=C3C=2C=CC=1)C1=CC=CC=C1 OKPMSRGLGBBULD-UHFFFAOYSA-N 0.000 description 1
- 125000003261 o-tolyl group Chemical group [H]C1=C([H])C(*)=C(C([H])=C1[H])C([H])([H])[H] 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- LFSXCDWNBUNEEM-UHFFFAOYSA-N phthalazine Chemical compound C1=NN=CC2=CC=CC=C21 LFSXCDWNBUNEEM-UHFFFAOYSA-N 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920003227 poly(N-vinyl carbazole) Chemical class 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 229910000160 potassium phosphate Inorganic materials 0.000 description 1
- 235000011009 potassium phosphates Nutrition 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical compound C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 125000006413 ring segment Chemical group 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000008149 soap solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005092 sublimation method Methods 0.000 description 1
- 238000002207 thermal evaporation Methods 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- ARYHTUPFQTUBBG-UHFFFAOYSA-N thiophen-2-ylboronic acid Chemical compound OB(O)C1=CC=CS1 ARYHTUPFQTUBBG-UHFFFAOYSA-N 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D285/00—Heterocyclic compounds containing rings having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by groups C07D275/00 - C07D283/00
- C07D285/01—Five-membered rings
- C07D285/02—Thiadiazoles; Hydrogenated thiadiazoles
- C07D285/14—Thiadiazoles; Hydrogenated thiadiazoles condensed with carbocyclic rings or ring systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
- C07D417/14—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing three or more hetero rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D513/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for in groups C07D463/00, C07D477/00 or C07D499/00 - C07D507/00
- C07D513/02—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for in groups C07D463/00, C07D477/00 or C07D499/00 - C07D507/00 in which the condensed system contains two hetero rings
- C07D513/04—Ortho-condensed systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/917—Electroluminescent
Definitions
- OLEDs organic light-emitting diodes
- the essential conditions for practical use are, in particular, a long operational lifespan, high stability against thermal stress and a low operating and operating voltage to enable mobile applications.
- An organic electroluminescent device usually consists of several layers, which are preferably applied to one another by means of vacuum methods.
- these layers are one: 1.
- Carrier plate substrate (usually glass or plastic films).
- HIL Hole injection layer
- HTL Hole Transport Layer
- Emission layer this layer can partially coincide with layers 4 or 6, but usually consists of fluorescent dyes or of host molecules doped with fluorescent dyes. 6.
- Electron Transport Layer ETL: mostly on
- Electron Injection Layer This layer can partially coincide with the layer 6 or it becomes a small part of the
- Cathode specially treated or specially deposited usually metals, metal combinations or
- Metal alloys with a low exit function are used e.g. B. Ca, Ba, Mg,
- this entire device is structured, contacted and finally also hermetically sealed, since i. d. R. the lifespan of such
- the emission color of the compounds according to the invention can be selected by choosing a suitable substitution pattern over the entire visible range, i.e. from deep blue to deep red, (see examples).
- the 2,1,3-benzothiadiazole-containing compounds according to the invention are notable for high temperature stability. By choice suitable substitution patterns, glass transition temperatures of greater than 100 ° C. are reached. 6.
- the compounds containing 2,1,3-benzothiadiazole according to the invention have excellent solubility in organic solvents. This means that these materials can also be processed from solution using coating or printing techniques. In a preferred embodiment, solutions can also be processed together with one or more other compounds, which can be both low molecular weight and higher or high molecular weight. This property is also an advantage in the usual processing by evaporation, since this considerably simplifies the cleaning of the systems and the shadow masks used.
- HBL Hole Blocking Layer
- EML EML
- novel phosphorescence OLED devices HBL
- AIQ 3 Another disadvantage of the use of AIQ 3 is the instability towards holes, which is now known in the literature [cf. z. BZ Popovic et al., Proceedings of SPIE, 1999, 3797, 310-315], which can always lead to problems in the device after long-term use.
- AIQ 3 A major practical disadvantage of AIQ 3 is the strong hygroscopy of this compound.
- AIQ 3 which is synthesized and stored under normal conditions, contains, in addition to the hydroxyquinoline ligands, still one molecule of water per complex molecule [cf. z. E.g .: H. Schmidbaur et al., Z. Naturforsch. 1991, 46b, 901-911]. This is extremely difficult to remove.
- AIQ 3 must therefore be used in OLEDs in complicated, multistage, sublimation processes, and then stored and handled in a protective gas atmosphere with the exclusion of water. Furthermore, large fluctuations in the quality of individual AIQ 3 batches and poor storage stability were found (S. Karg, E-MRS conference
- AIQ 3 is also used as the ETL, and on the other hand the question of the host material for the actual triplet emitter has not yet been clarified at all. Only a few materials (4,4'-biscarbazolyl-biphenyl, polyvinyl-carbazole, and a triazole derivative) have been reported to date. However, the operational lifespans in particular still require a great deal of optimization.
- ETL as HBL, or as a host material in the EML
- HBL HBL
- EML a host material in the EML
- They are characterized by the following properties, especially compared to AIQ 3 and the few host materials for phosphorescence OLEDs known to date: 1. They are colorless or almost colorless; this means that their UV / VIS absorption in the wavelength range between 400 and 700 nm is negligible. In electroluminescent devices according to the invention, this leads to better color purity and higher efficiency. This has the advantage that, especially with blue OLEDs, they do not lead to a color shift or decrease in efficiency. Another advantage is of course their use as host or ETL material, especially in inverted (see above) device geometries.
- the 2,1,3-benzothiadiazole-containing compounds according to the invention are notable for high oxidation stability. When used in corresponding devices according to the invention, this can lead to a significant increase in the operating life. Furthermore, the manufacture of these devices is simplified.
- the compounds containing 2,1,3-benzothiadiazole according to the invention have no discernible hygroscopy and a high stability to atmospheric oxygen. Storage for several days or weeks with access from
- AIQ 3 - do not take place continuously under protective gas.
- the invention relates to compounds which contain at least one structural unit of the formula (I)
- the group G corresponds to hydrogen, fluorine and / or an organic radical
- the compounds of the idealized point group S n , C n , C nv , Cnh > D n , Dn or Dnd with n 2,3,4,5 or 6, the molecular weights are in the range from 450 g / mol to 5000 g / mol, the melting points are above a temperature of 190 ° C. and with the proviso that it does not contain a macrocycle.
- Point group is used here as a concept of group theory, such as described in: F.A. Cotton, Chemical Applications of Group Theory, 3rd edition, New York, Wiley, 1990.
- the macrocycle is understood to be a ring with more than eight ring atoms (J.-M.
- the compounds containing 2,1,3-benzothiadiazole according to the invention are outstandingly suitable for use as electroluminescent materials.
- Corresponding OLED devices which contain the 2,1,3-benzothiadiazole-containing compounds according to the invention have, in addition to a long service life, high EL efficiency.
- the compounds containing 2,1,3-benzothiadiazole must have at least one axis of rotation with a count of 2 or higher, because in these cases the fluorescence quantum yield and thus the electroluminescence quantum yield is particularly large and generally significantly larger than in the case of more unsymmetrical compounds of the point groups C ⁇ and C s ,
- a further necessary requirement that suitable OLED materials have to meet, in particular if they are applied by vacuum evaporation or evaporation in the carrier gas stream, is a molar mass in the range from 450 g / mol to 5000 g / mol. If the value falls below the above Molar mass, the vapor pressure is so high even at low temperatures that the vacuum systems are heavily contaminated. On the other hand, experience shows that decomposition-free evaporation is no longer possible when the upper molar mass limit is exceeded.
- the melting points of the compounds are closely linked to the molar mass. These must be approximately above 190 ° C, since only then is sufficiently slow and uniform evaporation guaranteed and only this leads to homogeneous, glass-like films. However Glassy films are an essential prerequisite for working OLEDs.
- the melting point of a compound is given by the temperature at which the phase transition from solid to liquid takes place.
- the invention also relates to compounds of the formulas (II) and (III),
- R is the same at each occurrence H, F, CN, a straight-chain or branched or cyclic alkyl or alkoxy group with 1 to 20 C atoms, one or more non-adjacent CH 2 groups being represented by -O-, -S-, - NR 1 -, or -CONR 2 - can be replaced and one or more H atoms can be replaced by F;
- Ar is the same or different each time an aryl or
- Heteroaryl group with 3 to 30 C atoms which can be substituted by one or more, non-aromatic radicals R; where several substituents R, both on the same ring and on the two different rings together, can in turn span another mono- or polycyclic ring system;
- R 1 , R 2 are the same or different, H or an aliphatic or aromatic hydrocarbon radical having 1 to 20 carbon atoms;
- n is 1 to 10, preferably 1 to 6, particularly preferably 1, 2 or 3.
- the property profile of the above-mentioned compounds of the formula (II) or (III) can be tailored to the property profile required for OLED applications.
- the suitable choice of the substituent Ar enables the emission color to be set over the entire visible range from deep red to deep blue (see examples).
- the invention also relates to compounds of the formula (IV)
- Ar - compounds of the formula (IV) - leads to materials with a correspondingly short emission wavelength (blue Emission color) paired with a high molecular weight, which ensure the above-mentioned positive properties with regard to evaporation and the glass transition point.
- a balanced charge carrier injection (hole or electron injection) into the emission layer and a balanced charge carrier transport in the emission layer are basic requirements for efficient OLEDs with a long service life. Since the 2,1,3-benzothiadiazole-containing compounds, as set out above, are good
- Formula (V) Formula (VI) where the symbols and indices R, Ar, R 1 , R 2 and n have the meaning given above and o and p have the following meaning: o is 1 to 3, preferably 1; p is 1 to 3, preferably 1.
- Phosphorescence emitters can be transferred efficiently. This property is particularly advantageous when using the compounds of the formula (VII) and (VIII) host material in novel phosphorescence OLEDs.
- the invention also relates to compounds of the formulas (VII) and (VIII):
- X is the same or different on each occurrence C (Ar), CR or N; o is 1 to 3, preferably 1; p is 1 to 3, preferably 1.
- the invention also relates to compounds of the formula (IX), (X) and
- Preferred compounds of the formula (I) to (XI) are characterized in that the aryl or heteroaryl group Ar has 3 to 24 C atoms, particularly preferably 3 to 14 C atoms.
- Preferred compounds of the formula (I) to (XI) are characterized in that the radical Ar is benzene, toluene, xylene, fluorobenzene, difluorobenzene, biphenyl, 1, 2- or
- photovoltaic devices such as organic photodetectors or organic solar cells, as electron acceptor or - transport material.
- OFTs Organic Thin Film Transistor
- the compounds containing 2,1,3-benzothiadiazole according to the invention are generally prepared by known methods known to those skilled in the art, such as vacuum evaporation, evaporation in
- Carrier gas stream or also from solution by spin coating or with various printing processes (e.g. inkjet printing, offset printing, etc.), applied in the form of a film to a substrate.
- various printing processes e.g. inkjet printing, offset printing, etc.
- Example X1 Example X2
- the compounds containing 2,1,3-benzothiadiazole were prepared using standard brominated methods, in particular using palladium-catalyzed CC (eg Suzuki coupling) or CN coupling reactions (Hartwig-Buchwald coupling), starting from brominated 2.1, 3-benzothiadiazoles and arylboronic acids or arylamines.
- the educts were from ALDRICH [2,1, 3-benzothiadiazole, N-bromosuccinimide, thiophenboronic acid, phenylboronic acid, o-tolylboronic acid, o-fluoroboronic acid, potassium phosphate, sodium cyanide, tri-tetf-butylphosphine, palladium (II) acetate, Pd (PPh 3 ) 4 ] or from ALFA [4-chloro-2-methyl- phenylboronic acid] or based on literature methods (4,7-dibromo-2,1,3-benzothiadiazole, 4,7-dibromo-5,6-dimethyl-2,1,3-benzothiadiazole: K. Pilgram, M. Zupan, R. Skiles J. Heterocycl. Chem. 1970, 7, 629).
- Example C2 bis-4,7- (5 '-bromo-2' -thienyl) -2,1,3-benzothiadiazole
- Example R3 bis-4,7- (5 '(2-fluorophenyl) -2'-thienyl) -2,1,3-benzothiadiazole Carried out analogously to Example R1. Instead of benzene boronic acid, 4.20 g (30.0 mmol) of 2-fluorophenylboronic acid were used.
- Example G6 Bis-4,7- (2-spiro-9,9'-bifluorenyl) -2,1, 3-benzothiadiazole Carried out analogously to Example R1. Instead of benzene boronic acid, 10.81 g
- Example B1 bis-4,7- (2-methylterphenyl) -5,6-dimethyl-2,1,3-benzothiadiazole
- ITO-coated substrates e.g. glass substrates, PET film
- ITO-coated substrates e.g. glass substrates, PET film
- an ultrasonic bath e.g. soap solution, Millipore water, isopropanol
- a desiccator e.g. soap solution, Millipore water, isopropanol
- a polymer hole injection layer is usually used as the first organic layer.
- This is usually a conjugated, conductive polymer, such as. B. a polyaniline derivative (PANI) or a polythiophene derivative (z. B.
- PEDOT, BAYTRON P TM from BAYER This is then applied by spin coating (varnishing).
- the organic layers are applied in succession by vapor deposition in a high vacuum system.
- the layer thickness of the respective layer and the vapor deposition rate are tracked or set using a quartz crystal.
- individual layers can also consist of more than one compound, ie usually a host material with one
- Electrodes are also applied to the organic layers. This is usually done by thermal evaporation (Balzer BA360 or Pfeiffer PL S 500). Then the transparent ITO electrode as the anode and the
- Metal electrode (z. B. Ca, Yb, Ba-Al) contacted as a cathode and the device parameters determined.
- Example 1 Red OLED with emitter material according to Example R1
- PEDOT 20 nm spun from water; PEDOT obtained from
- R1 10 wt .-% (evaporated; bis-4,7- (5 '-phenyl-2' -thienyi) -2,1, 3- benzothiadiazole prepared according to Example R1) 3 AIQ 10 nm (vapor-deposited; AIQ 3 obtained from SynTec;
- Example 2 Red OLED with emitter material according to Example R12
- PEDOT 20 nm spun from water; PEDOT obtained from
- This non-optimized OLED was characterized as standard, the measured characteristic data are shown in FIGS. 4-6. In addition to the flatness of the
- Example 3 Blue OLED with emitter material according to Example B1
- a blue-emitting OLED was produced with the following structure: PEDOT 20 nm (spun on water; PEDOT purchased from BAYER AG; poly- [3,4-ethylenedioxy-2,5-thiophene]
- MTDATA 20 nm (evaporated; MTDATA purchased from SynTec; Tris-4,4 ', 4 "- (3-methylphenylphenylamino) triphenylamine)
- S-TAD 20 nm (evaporated; S-TAD manufactured according to W099 / 12888; 2,2 ', 7,7'-tetrakis (diphenylamino) -9,9 ' -spirobifluorene)
- S-DPVBi 30 nm (evaporated; S-DPVBi manufactured according to H. Spreitzer, H. Schenk, J. Salbeck, F. Weissoertel, H. Riel. W. Ries, Proceedings of SPIE, 1999, Vol. 3797; 2.2 ', 7,7'-tetrakis (2,2'-diphenylvinyl) spiro-9,9' -bifluoren) and doped with
- AIQ 2 10 nm (evaporated: AIQ 3 purchased from SynTec; Tris (quinoxalinato) aluminum (III))
- This non-optimized OLED was characterized as standard, the measured characteristic data are shown in FIGS. 7 and 8.
- an enormous advantage of this OLED is the flatness of the efficiency curve, which means that very high efficiencies are still achieved even at very high brightness (e.g. 10000 Cd / m 2 ). This is particularly important for use in passive matrix-driven displays.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Electroluminescent Light Sources (AREA)
- Nitrogen- Or Sulfur-Containing Heterocyclic Ring Compounds With Rings Of Six Or More Members (AREA)
- Plural Heterocyclic Compounds (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10229370 | 2002-06-29 | ||
| DE10229370A DE10229370A1 (de) | 2002-06-29 | 2002-06-29 | 2,1,3-Benzothiadiazole |
| PCT/EP2003/006287 WO2004002970A1 (de) | 2002-06-29 | 2003-06-14 | 2,1,3-benzothiadiazole als elektronische wirkkomponenten |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1519929A1 true EP1519929A1 (de) | 2005-04-06 |
Family
ID=29723568
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03761466A Withdrawn EP1519929A1 (de) | 2002-06-29 | 2003-06-14 | 2,1,3-benzothiadiazole als elektronische wirkkomponenten |
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| Country | Link |
|---|---|
| US (1) | US7223484B2 (de) |
| EP (1) | EP1519929A1 (de) |
| JP (1) | JP2006502981A (de) |
| KR (1) | KR20050042757A (de) |
| CN (1) | CN100445274C (de) |
| DE (1) | DE10229370A1 (de) |
| WO (1) | WO2004002970A1 (de) |
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| WO2004103981A1 (en) * | 2003-05-16 | 2004-12-02 | Dow Global Technologies Inc. | Process for preparing a 4,7-bis(5-halothien-2-yl)-2,1,3-benzothiadiazole and a precursor therefor |
| US20080315185A1 (en) * | 2004-03-22 | 2008-12-25 | Yasushi Araki | Photodetector |
| GB2442028A (en) * | 2004-12-24 | 2008-03-26 | Cambridge Display Tech Ltd | Light emissive device |
| JP5242373B2 (ja) | 2005-03-16 | 2013-07-24 | メルク パテント ゲーエムベーハー | 有機エレクトロルミネセンスデバイスのための新規材料 |
| EP2072557A4 (de) | 2006-10-11 | 2010-04-14 | Toray Industries | Elektronenspendendes organisches material für photovoltaische vorrichtungen, material für photovoltaische vorrichtungen und photovoltaische vorrichtungen |
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| US7118787B2 (en) | 2001-06-29 | 2006-10-10 | University Of Hull | Liquid crystal alignment layer |
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| JP2003265054A (ja) | 2002-03-13 | 2003-09-24 | Hiroshi Shimizu | 稲作水田水戸尻水面高さ調整装置 |
-
2002
- 2002-06-29 DE DE10229370A patent/DE10229370A1/de not_active Withdrawn
-
2003
- 2003-06-14 EP EP03761466A patent/EP1519929A1/de not_active Withdrawn
- 2003-06-14 KR KR1020047021544A patent/KR20050042757A/ko not_active Ceased
- 2003-06-14 JP JP2004516599A patent/JP2006502981A/ja active Pending
- 2003-06-14 US US10/519,967 patent/US7223484B2/en not_active Expired - Fee Related
- 2003-06-14 WO PCT/EP2003/006287 patent/WO2004002970A1/de not_active Ceased
- 2003-06-14 CN CNB038180782A patent/CN100445274C/zh not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
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| See references of WO2004002970A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10229370A1 (de) | 2004-01-15 |
| CN1671675A (zh) | 2005-09-21 |
| US7223484B2 (en) | 2007-05-29 |
| US20060052612A1 (en) | 2006-03-09 |
| JP2006502981A (ja) | 2006-01-26 |
| WO2004002970A1 (de) | 2004-01-08 |
| CN100445274C (zh) | 2008-12-24 |
| KR20050042757A (ko) | 2005-05-10 |
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