SF3-TRZ
CAS Number 1639424-37-5
Fluorescent Host Materials, Host Materials, OLED Materials, TADF Host Materials
An n-type host material with deep HOMO
for the fabrication of efficient hyperfluorescence OLEDs, Sublimed grade (≥99%) and Unsublimed grade (≥98%)
Overview | Product Information | Related Products
SF3-TRZ (CAS number 1639424-37-5) is an OLED host material, consisting of a triazine and a spirobifluorene. SF3-TRZ has a clear glass transition temperature above 130 °C, and its decomposition temperature at 5% weight loss is around 400 °C. The estimated zero-field electron mobility of SF3-TRZ is 2-6 × 10−5 cm2/V·s.
SF3-TRZ, as an n-type host molecule, balances charge fluxes and suppresses high-energy exciton formation, due to its deep HOMO level (−6.54 eV) and excellent electron transport properties. Green TADF OLEDs with SF3-TRZ as the host material achieve a maximum EQE of 20.6%.
Simulated triplet spin density distribution of SF3-TRZ is localized on the triazine group, leading to high triplet energy of 2.80 eV. This prevents triplet excitons transferring from the host materials to the emitters, conserving the narrowband emission of the hyperfluorescence OLED (λFWHM = 38 nm)
Host material for OLED
high triplet energy (ET = 2.80 eV)
Deep HOMO level
balances charge fluxes and suppresses high-energy exciton formation
High purity
available in sublimed grade (≥99%) and unsublimed grade (≥98%)
Worldwide shipping
Quick and reliable shipping
General Information
| CAS Number | 1639424-37-5 |
|---|---|
| Chemical Formula | C40H25N3 |
| Full Name | 2,4-Diphenyl-6-(9,9′-spirobi[fluoren]-3-yl)-1,3,5-triazine |
| Molecular Weight | 547.65 g/mol |
| Absorption | 309 nm |
| Photoluminescence | 412 nm |
| HOMO and LUMO |
−6.54 eV (HOMO) −3.10 eV (LUMO) |
| Melting Point | N/A |
| Synonyms | 2-(9,9′-Spirobi[fluoren]-3-yl)-4,6-diphenyl-1,3,5-triazine |
| Classification or Family | Host materials, OLEDs materials, TADFs, Hyperfluorescence |
Product Details
| Purity |
Sublimed ≥99% Unsublimed ≥98% |
|---|---|
| Thermogravimetric Analysis (TGA) | 400 °C (5% weight loss) |
| Appearance | White powder |
Chemical Structure
Device Structure(s)
| Device Structure | Al/LiF(0.8 nm)/Bebq2 (35 nm)/SF3-TRZ (10 nm)/15 wt% 4CzIPN:SF3-TRZ (30 nm)/mCBP (10 nm)/Tris-PCz (10 nm)/α-NPD (30 nm)/HAT-CN (10 nm)/ITO |
|---|---|
| Colour | Green
|
| Max. External Quantum Efficiency | 20.6% |
| Max. Current Efficiency | 68.3 cd/A |
| Max. Power Efficiency | 61.3 lm/W |
| Device Structure | ITO/HATCN (5 nm)/TAPC (30 nm)/TCTA (10 nm)/mCP (5 nm)/DPA-tBuPh-BN:SF3-TRZ (20 nm)/TmPyPB (40 nm)/LiF (1 nm)/Al |
|---|---|
| Colour | Sky blue
|
| Max. External Quantum Efficiency | 15.9% |
| Luminance | 3370 cd/m2 |
MSDS Documentation
SF3-TRZ MSDS SheetReferences
- Role of reverse intersystem crossing using a TADF-type acceptor molecule on the device stability of exciplex based organic-light emitting diodes, T. Nguyen et al., Adv. Mater., 32, 1906614 (2020); DOI: 10.1002/adma.201906614.
- A thermally activated delayed fluorescence green OLED with 4500 h lifetime and 20% external quantum efficiency by optimizing the emission zone using a single-emission spectrum technique, R. Ciarnáin et al., Adv. Mater., 2022, 34, 2201409; DOI: 10.1002/adma.202201409.
- Helically chiral multiresonant thermally activated delayed fluorescent emitters and their use in hyperfluorescent organic light-emitting diodes, J. Wang et al., Chem. Sci., 15, 16917 (2024); DOI: 10.1039/d4sc03478c.
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