TBPe
General Information
| CAS number | 80663-92-9 |
| Chemical formula | C36H44 |
| Molecular weight | 476.73 g/mol |
| Absorption | λmax 412, 438 nm in THF |
| Fluorescene | λem 459, 480 nm in THF |
| HOMO/LUMO | HOMO 5.25 eV, LUMO 1.84 eV [1] |
| Synonyms | 2,5,8,11-Tetrakis(1,1-dimethylethyl)perylene, 2,5,8,11-Tetra-tert-butylperylene, TBP |
| Classification / Family | Perylene derivatives, Blue fluorescence emitter, Light-emitting diodes, Organic electronics, TADF blue dopant materials, Sublimed materials. |
Product Details
| Purity | Sublimed: 99.76% (HPLC) |
| Melting point | TGA: >220 °C (0.5% weight loss) |
| 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 for OLED devices page.
Applications
2,5,8,11-Tetra-tert-butylperylene (TBPe), a family member of perylene, has been widely used as a blue fluorescence emitter in OLED devices.
With the introduction of four steric tert-butyl groups to the perylene, electroluminescent devices using TBPe as a dopant have the benefit of electroluminescent color stability; this is due to a lower degree of molecular aggregation tendency in the non-planar perylene structure.
The steric hindrance of the side groups also prevents the formation of exciplex and charge trapping, leading to higher efficiency of the electroluminescent devices.
| Device structure | ITO (120 nm)/PEDOT:PSS (60 nm)/mCP (30 nm)/CzAcSF:TBPe (25 nm)/TSPO1* (5 nm)/TPBi (30 nm)/LiF (1 nm)/Al (200 nm) [2] |
| Colour | Blue  |
| Max Current Efficiency | 23.7 cd/A |
| Max EQE | 15.4% |
| Max. Power Efficiency | 23.4 lm W-1 |
| Device structure | ITO (120 nm)/PEDOT:PSS (60 nm)/mCP (30 nm)/CzAcSF:TBPe:TBRb (25 nm)/TSPO1* (5 nm)/TPBi (30 nm)/LiF (1 nm)/Al (200 nm) [2] |
| Colour |
White 
|
| Max Current Efficiency | 35.1 cd/A |
| Max EQE | 14.0% |
| Max. Power Efficiency | 36.2 lm W-1 |
| Device structure | ITO/a-NPB (35 nm)/mCP (10 nm)/1 wt%-TBPe:15wt%-ACRSA:DPEPO (15 nm)/DPEPO (8 nm)/TPBi (57 nm)/LiF (0.8 nm)/Al (100 nm) [3] |
| Colour | Blue |
| Max Current Efficiency | 27 cd/A |
| Max EQE | 13.4% |
| Max. Power Efficiency | 18 lm W-1 |
| Device structure | ITO (120 nm)/PEDOT:PSS (60 nm)/TAPC (10 nm)/TCTA (10 nm)/mCP (10 nm)/DPEPO:50% CzAcSF:0.1% TBPe (25 nm)/TSPO1* (5 nm)/TPBI (30 nm)/LiF (1 nm)/Al (200 nm) [4] |
| Colour | Blue |
| Max Current Efficiency | 29.8 cd/A |
| Max EQE | 18.1 |
| Max. Power Efficiency | 31.2 lm W-1 |
Literature and Reviews
- Electroluminescent Properties of Fully Substituted Ethylene Moieties, S. Kim et al., Mol. Cryst. Liq. Cryst., 458:1, 209-216 (2006); DOI: 10.1080/15421400600932371.
- Host Engineering for High Quantum Effi ciency Blue and White Fluorescent Organic Light-Emitting Diode, W. Song et al., Adv. Mater., 27, 4358–4363 (2015); DOI: 10.1002/adma.201501019.
- High-efficiency organic light-emitting diodes with fluorescent emitters, H. Nakanotani et al., Nat. Commun., 5:4016 (2014); DOI: 10.1038/ncomms5016.
- High efficiency blue fluorescent organic light-emitting diodes using a conventional blue fluorescent emitter, I-H. Lee et al., J. Mater. Chem. C, 3, 8834 (2015); DOI: 10.1039/c5tc01626f.