3tPAB is a deep blue dopant for organic light-emitting diodes, belonging to the multi-resonance thermally activated delayed fluorescence (MR-TADF) class of boron-based triarylamine emitters. It is supplied as a sublimed material with a purity of ≥99.0% (HPLC), appearing as a yellow powder or crystals. It is also known as DABNA-NP-TB, t-DABDPA and t-DAB-DPA (CAS 2056877-25-7).
The molecule carries six bulky tert-butyl groups around its periphery. This steric shielding limits interactions between neighbouring molecules, reducing aggregation-related emission quenching and raising the photoluminescence quantum yield. In a device using mCP as the sole host, 3tPAB reached a maximum EQE of 19.3% with CIE coordinates of (0.141, 0.076) and a FWHM of 26 nm.
Beyond acting as an emitter, 3tPAB can serve as a sensitizer in blue fluorescent and MR-TADF OLEDs. In TADF-sensitized TADF (TST) devices pairing 3tPAB with the MR-TADF emitter PhDMAC-BN, a maximum external quantum efficiency of 33.9% was reported, supported by efficient Förster energy transfer.
- Deep blue emitting dopant in narrowband, high color-purity OLEDs.
- Sensitizer for blue conventional fluorescent OLED devices.
- Sensitizer in TADF-sensitized TADF (TST) devices with MR-TADF emitters such as PhDMAC-BN.
- Component in the emissive layers of all-fluorescence white OLEDs.
| Brand | Ossila |
|---|---|
| CAS number | 2056877-25-7 |
| Molecular formula | C66H78BN3 |
| Purity | Sublimed ≥99.0% (HPLC) |
| Category | — |
| Pack sizes | 100 mg, 250 mg, 500 mg, 1 g |
| Physical form | Yellow powder/crystals |
| Storage | — |
- Product code: M2431A1
- Molecular Weight: 924.16 g/mol
- Fluorescence: λem 458 nm (in film)
- HOMO/LUMO: HOMO = 5.09 eV, LUMO = 2.36 eV
- Synonyms: DABNA-NP-TB, t-DABDPA, t-DAB-DPA
- Classification: Triarylamine derivatives, Triphenylboron, Blue dopant, MR-TADF, Sublimed materials
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