Structure of 37500-95-1
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The BI-3802 was designed by Boehringer Ingelheim and could be obtained free of charge through the Boehringer Ingelheim open innovation portal opnMe.com, associated with its negative control.
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Grzelak, Magdalena ; Kumar, Dharmendra ; Kochman, Michał Andrzej ; Morawiak, Maja ; Wiosna-Sałyga, Gabriela ; Kubas, Adam , et al.
Abstract: The capability of organic emitters to harvest triplet excitons via a thermally activated delayed fluorescence (TADF) process has opened a new era in organic optoelectronics. Nevertheless, low brightness, and consequently an insufficient roll-off ratio, constitutes a bottleneck for their practical applications in the domain of organic light-emitting diodes (OLEDs). To address this formidable challenge, we developed a new design of desymmetrized naphthalimide (NMI) featuring an annulated indole with a set of auxiliary donors on its periphery. Their perpendicular arrangement led to minimized HOMO–LUMO overlap, resulting in a low energy gap (ΔEST = 0.05–0.015 eV) and efficient TADF emission with a photoluminescence quantum yield (PLQY) ranging from 82.8% to 95.3%. Notably, the entire set of dyes (NMI-Ind-TBCBz, NMI-Ind-DMAc, NMI-Ind-PXZ, and NMI-Ind-PTZ) was utilized to fabricate TADF OLED devices, exhibiting yellow to red electroluminescence. Among them, red-emissive NMI-Ind-PTZ, containing phenothiazine as an electron-rich component, revealed predominant performance with a maximum external quantum efficiency (EQE) of 23.6%, accompanied by a persistent luminance of 38 000 cd m−2 . This results in a unique roll-off ratio (EQE10000 = 21.6%), delineating a straightforward path for their commercial use in lighting and display technologies.
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CAS No. : | 37500-95-1 |
Formula : | C20H25N |
M.W : | 279.42 |
SMILES Code : | CC(C)(C)C1=CC=C2NC3=C(C=C(C=C3)C(C)(C)C)C2=C1 |
MDL No. : | MFCD03425849 |
InChI Key : | OYFFSPILVQLRQA-UHFFFAOYSA-N |
Pubchem ID : | 15469209 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H335 |
Precautionary Statements: | P261-P305+P351+P338 |
Num. heavy atoms | 21 |
Num. arom. heavy atoms | 13 |
Fraction Csp3 | 0.4 |
Num. rotatable bonds | 2 |
Num. H-bond acceptors | 0.0 |
Num. H-bond donors | 1.0 |
Molar Refractivity | 94.34 |
TPSA ? Topological Polar Surface Area: Calculated from |
15.79 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
3.45 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
6.73 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
5.92 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
4.81 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
6.11 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
5.4 |
Log S (ESOL):? ESOL: Topological method implemented from |
-6.14 |
Solubility | 0.000203 mg/ml ; 0.000000727 mol/l |
Class? Solubility class: Log S scale |
Poorly soluble |
Log S (Ali)? Ali: Topological method implemented from |
-6.87 |
Solubility | 0.000038 mg/ml ; 0.000000136 mol/l |
Class? Solubility class: Log S scale |
Poorly soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-7.38 |
Solubility | 0.0000117 mg/ml ; 0.000000042 mol/l |
Class? Solubility class: Log S scale |
Poorly soluble |
GI absorption? Gatrointestinal absorption: according to the white of the BOILED-Egg |
High |
BBB permeant? BBB permeation: according to the yolk of the BOILED-Egg |
No |
P-gp substrate? P-glycoprotein substrate: SVM model built on 1033 molecules (training set) |
No |
CYP1A2 inhibitor? Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set) |
Yes |
CYP2C19 inhibitor? Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set) |
Yes |
CYP2C9 inhibitor? Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set) |
No |
CYP2D6 inhibitor? Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set) |
Yes |
CYP3A4 inhibitor? Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set) |
No |
Log Kp (skin permeation)? Skin permeation: QSPR model implemented from |
-3.23 cm/s |
Lipinski? Lipinski (Pfizer) filter: implemented from |
1.0 |
Ghose? Ghose filter: implemented from |
None |
Veber? Veber (GSK) filter: implemented from |
0.0 |
Egan? Egan (Pharmacia) filter: implemented from |
1.0 |
Muegge? Muegge (Bayer) filter: implemented from |
2.0 |
Bioavailability Score? Abbott Bioavailability Score: Probability of F > 10% in rat |
0.55 |
PAINS? Pan Assay Interference Structures: implemented from |
0.0 alert |
Brenk? Structural Alert: implemented from |
0.0 alert: heavy_metal |
Leadlikeness? Leadlikeness: implemented from |
No; 1 violation:MW<1.0 |
Synthetic accessibility? Synthetic accessibility score: from 1 (very easy) to 10 (very difficult) |
1.9 |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
58.21% | To a solution of 3b (0.376g, 1.0mmol), 18-crown-6 (0.027g, 0.1mmol) and 3,6-di(tert-butyl)carbazole (0.68g, 2.4mmol) in DMPU (5mL) was added K2CO3 (0.55g, 4.0mmol). The reaction mixture was then purged with nitrogen for ten minutes before adding CuI (0.020g, 0.1mmol). The following procedure was similar to that used for 1a. Yield: 58.21%. M.p.:367-370C. 1H NMR (300MHz, CDCl3): delta (ppm) 8.26-8.23 (d, J=8.4Hz, 4H), 8.13 (s, 4H), 7.83-7.80 (d, J=8.4Hz, 2H), 7.50-7.43 (m, 8H), 1.46 (s, 36H). 13C NMR (75MHz, CDCl3): delta (ppm) 143.7, 142.8, 138.4, 137.9, 129.2, 126.2, 123.7, 123.6, 116.1, 108.8, 34.4, 31.6. MS (MALDI-TOF) [m/z]: calcd for C52H56N2O2S, 772.41; found, 772.5745. Anal. Calcd. for C52H56N2O2S (%): C, 80.79; H, 7.30; N 3.62; S, 4.15.found:C, 80.62; H, 7.38; N 3.67; S, 4.17. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
49% | With tri-tert-butyl phosphine; potassium tert-butylate; palladium diacetate; In toluene; for 24h;Inert atmosphere; | 2,8-Dibromodibenzofuran (1) (0.5 g, 1.53 mmol), 3,6-di-tert-butyl-9H-carbazole (2) (1.30 g, 4.66 mmol), Pd(OAc)2 (0.02 g, 0.096 mmol), tri-tert-butylphosphine solution (1.0 M in toluene) (0.06 g, 0.29 mmol), potassium tert-butoxide (0.29 g, 3.02 mmol) and 20 ml of dry toluene were heated at 110 C for 24 h under nitrogen. After cooling, the reaction mixture was diluted with ethyl acetate and the organic phase was washed with water and brine. After being dried over NaSO4 and filtered, the solvent was removed and the residue was purified by column chromatography using nhexane/ ethylacetate (7:1) as an eluent and crystallized from the eluent mixture of solvents to obtain DBO as white solid (0.54 g, yield: 49percent); m.p. 155-156 C. 1H NMR (400 MHz, CDCl3, ppm): delta 8.10 (d, 3H, J 2.1 Hz, Ar), 8.02 (d, 1H, J 2.1 Hz, Ar), 7.85 (d, 1H, J 8.6 Hz, Ar), 7.68 (d, 1H, J 8.6 Hz, Ar), 7.60e7.50 (m, 3H, Ar), 7.47-7.38 (m, 5H, Ar), 7.26e7.20 (m, 3H, Ar), 7.17 (s, 1H, Ar), 1.40 (s, 36H, 12 -CH3). 13C NMR (75.4 MHz, CDCl3, ppm): delta 156.9, 154.8, 142.8, 139.9, 133.1, 127.8, 126.3, 125.6, 123.9, 123.6, 123.1, 120.9, 119.4, 116.2, 112.7, 111.9, 109.1, 34.7, 32.1. MS (APCI, 20 V), m/z: 724 ([M+H]+). Elemental analysis: calcd (percent) for C52H54N2O: C 86.38, H 7.53, N 3.87, O 2.21; found C 86.43, H 7.54, N 3.81. |