CAS Number 2056877-25-7
3tPAB is a multi-resonance thermally activated delayed fluorescence (MR-TADF) deep blue, high colour-purity emitter with six peripheral large steric hindrance tert-butyl units. These units supress the intermolecular interactions, thus to aggregation-induced emission (AIE) quenching, and improve the PLQY of emitter.
By using 1,3-di(9H-carbazol-9-yl)benzene (mCP) as the single host, a 3tPAB based device achieves a maximum external quantum efficiency (EQEmax) of 19.3%, CIE coordinates of (0.141, 0.076), and full-width at half-maximum (FWHM) of 26 nm.
3tPAB can also be used as as a sensitizer for blue traditional fluorescence and MR-TADF OLED devices to minimize the damage of high-energy absorption of the active materials. TADF-sensitized TADF (TST) devices, using 3tPAB as a sensitizer and MR-TADF compound PhDMAC-BN as an emitter, demonstrated maximum external quantum efficiency of 33.9% with efficient Förster energy transfer in high colour-purity.
| CAS Number |
2056877-25-7 |
|---|---|
| Chemical Formula | C66H78BN3 |
| Molecular Weight | 924.16 g/mol |
| Absorption* | λmax |
| Fluorescence | λem 458 nm (in film) |
| HOMO/LUMO |
HOMO = 5.09 eV, LUMO = 2.36 eV |
| Synonyms | 2,12-Di-tert-butyl-N,N,5,9-tetrakis(4-(tert-butyl)phenyl)-5,9-dihydro-5,9-diaza-13b-boranaphtho[3,2,1-de]anthracen-7-amine, DABNA-NP-TB, t-DABDPA, t-DAB-DPA |
| Classification or Family | Triarylamine derivatives, Tryphenylboron, Blue dopant, Multiresonance thermally activated delayed fluorescent (MR-TADF), Sublimed materials. |
| Purity | Sublimed* 98.8% (HPLC) |
|---|---|
| Melting Point | - |
| Appearance |
Yellow powder/crystals |
* Sublimation is a technique used to obtain ultra pure-grade chemicals, see sublimed materials for OLED devices.
Chemical structure of 3tPAB, CAS 2056877-25-7
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