TCPZ, bipolar host to create highly efficient devices with ultra-low driving voltages
For high performance deep-red, green and blue PhOLEDs
TCPZ - 2,4,6-Tris(3-(9H-carbazol-9-yl)phenyl)-1,3,5-triazine is a bipolar host with an electron withdrawn triphenyltriazine centre and three electron rich carbazole peripheral units.
With its decreased singlet–triplet exchange energy (ΔEST = 0.24 eV) and low-lying lowest unoccupied molecular orbital (LUMO) energy level, ultra-low driving voltages can be expected by utilizing TCPZ as the host. TCPZ can be used for high performance deep-red, green and blue PhOLEDs for its good bipolar transport feature.
Ir(ppy)3:TCPZ has a lifetime about two times longer than that of the Ir(ppy)3 triplet excitons due to the triplet exciplex formed between Ir(ppy)3 and TCPZ.
|Molecular weight||804.94 g/mol|
|Absorption||λmax 283, 296 nm in film|
|Fluorescence||λmax 467 nm in film|
|HOMO/LUMO||HOMO 6.18 eV, LUMO 2.95 eV|
|Classification / Family||Triazine derivatives, Bipolar host materials, PHOLEDs host materials, Sublimed materials.|
|Purity||Sublimed >99.0% (HPLC)|
|Melting point||Tg = 162 ℃|
*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.
|Sublimed (>99.0% purity)||M2124A1||250 mg||£300|
|Sublimed (>99.0% purity)||M2124A1||500 mg||£480|
|Sublimed (>99.0% purity)||M2124A1||1 g||£760|
Literature and Reviews
- A host material with a small singlet–triplet exchange energy for phosphorescent organic light-emitting diodes: Guest, host, and exciplex emission, S. Su et al., Org. Electron. 13 (10); 1937-1947 (2012); DOI: 10.1016/j.orgel.2012.06.009.
- A Bipolar and Small Singlet-Triplet Splitting Energy Host with Triplet Energy Lower Than a Blue Phosphor for Phosphorescent OLEDs in Panchromatic Range, Chin. J. Chem., 34 (8), 763-770 (2016); C. Wang et al., DOI: 10.1002/cjoc.201600147.
- Extremely low driving voltage electrophosphorescent green organic light-emitting diodes based on a host material with small singlet–triplet exchange energy without p- or n-doping layer, D. Zhang et al., Org. Electron. 14 (1); 260-266 (2013); DOI: 10.1016/j.orgel.2012.11.003.
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