CAS Number 159526-57-5
DTAF has a fluorene centred structure with two N,N-bis(p-tolyl))benzenamine attached to the fluorine. DTAF is electron rich, so is normally used as a hole transporting layer or electron blocking layer (with a LUMO of 1.84 eV) in OLED devices.
DTAF can also form exciplexes with other electron deficient materials, such as PO-T2T, generating yellow exciplex emission. Parallel all exciplex based white-light OLED (WOLED) blend layers of mCP/PO-T2T and DTAF/PO-T2T demonstrates excellent maximum current and power efficiencies (27.7 cd/A and 15.8 ml/W respectively) with CIE(0.29, 0.35) and CRI 70.6 [1].
| CAS number | 159526-57-5 |
|---|---|
| Chemical formula | C53H44N2 |
| Molecular weight | 708.93 g/mol |
| Absorption | λmax 304 nm (in THF) |
| Fluorescence | λem 431 nm(in THF) |
| HOMO/LUMO | HOMO = 5.31 eV, LUMO = 1.84 eV [1] ET = 2.87 eV |
| Full chemical name | 9,9-di[4-(di-p-tolyl)aminophenyl]fluorine |
| Synonyms | 4,4′-(9H-fluorene-9,9-diyl)bis(N,N-di-p-tolylaniline), 4,4'-(9H-fluoren-9-ylidene)bis[N,N-bis(4-methylphenyl)-benzenamine |
| Classification / Family | Triarylamine derivatives, TADF exciplex, Hole transporting layer (HTL) materials, Electron blockingt layer (EBL) materials, Sublimed materials |
| Purity | Sublimed >99.0% (HPLC) |
|---|---|
| Melting point | mp = 374 °C (DSC) |
| Appearance | White powder/crystals |
*Sublimation is a technique used to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to the Sublimed Materials.
Chemical structure of DTAF, CAS 159526-57-5
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