TBPe


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Order Code: M2117A1

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.

 

tbpe chemical structure
Chemical structure of TBPe; CAS No. 80663-92-9.

 

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 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 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 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 blue
Max Current Efficiency 29.8 cd/A 
Max EQE 18.1
Max. Power Efficiency 31.2 lm W-1
*For chemical structure information, please refer to the cited references.

 

Literature and Reviews

  1. Electroluminescent Properties of Fully Substituted Ethylene Moieties, S. Kim et al., Mol. Cryst. Liq. Cryst., 458:1, 209-216 (2006); DOI: 10.1080/15421400600932371.
  2. 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.
  3. High-efficiency organic light-emitting diodes with fluorescent emitters, H. Nakanotani et al., Nat. Commun., 5:4016 (2014); DOI: 10.1038/ncomms5016.
  4. 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.