3-(4,6-Diphenyl-1,3,5-triazin-2-yl)-9-phenyl-9H-carbazole (DPTPCz) is an isomer to Cab-Ph-TRZ with triazine as electron-deficient and carbazole as electron-rich moieties. The difference between them is that for DPTPCz, triazine is directly attached to the carbazole unit while there is a phenyl spacer between the trazine and carbazole units for Cab-Ph-TRZ.
DPTPCz is used as a phosphorescent host material for blue, green and red light-emitting diodes. The bipolar host can achieve balanced charge injection/transport in phosphorescent organic light emitting diodes (PhOLEDs). Nearly 100% triplet harvesting in conventional fluorophor-based organic light-emitting devices is realized through energy transfer from TAPC:DPTPCz exciplex with C545T-doped device. The device showed a maximum current efficiency of 44.0 cd A-1, a maximum power efficiency of 46.1 lm W-1, and a maximum external quantum efficiency of 14.5% 
|Molecular weight||474.55 g/mol|
|Absorption||λmax 305, 353 nm in Ethyl acetate|
|Fluorescence||λmax 416 nm in Ethyl acetate|
|HOMO/LUMO||HOMO 5.69 eV, LUMO 2.76 eV, ET = 2.78 eV|
|Classification / Family||Triazine derivatives, Bipolar host materials, PHOLEDs host materials, Sublimed materials.|
|Purity||Sublimed >99.0% (HPLC)|
|Melting point||Tg = 86 ℃|
*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.
|Device structure||ITO/NPB (30 nm)/TCTA (10 nm)/DPTPCz:Ir(ppy)2acac (7 wt%, 30 nm)/TPBi (30 nm)/LiF (1 nm)/Al |
|Max. Current Efficiency||65.7 cd/A|
|Device structure||ITO/NPB (30 nm)/TCTA (10 nm)/DPTPCz:FIrPic (12 wt%, 30 nm)/TAZ (30 nm)/LiF (1 nm)/Al |
|Max. Current Efficiency||27.4 cd/A|
|Device structure||ITO/NPB (30 nm)/TCTA (10 nm)/DPTPCz:Ir(2-phq)3(6%; 30 nm)/TPBi (30 nm)/LiF (1 nm)/Al (100 nm) |
|Max. Luminance||22,480 cd/m2
|Max. Current Efficiency||31.66 cd/A|
*For chemical structure information, please refer to the cited references.
|Sublimed (>99.0% purity)||M2313A1||250 mg||£300|
|Sublimed (>99.0% purity)||M2313A1||500 mg||£480|
|Sublimed (>99.0% purity)||M2313A1||1 g||£760|
Literature and Reviews
- Novel bipolar host materials based on 1,3,5-triazine derivatives for highly efficient phosphorescent OLEDs with extremely low efficiency roll-off, X. Liu et al., Phys. Chem. Chem. Phys., 14, 14255-14261 (2012); DOI: 10.1039/C2CP41542A.
- Highly efficient green and red phosphorescent OLEDs using novel bipolar blue fluorescent materials as hosts, J. Xiao et al., Synth. Met., 193, 89-93 (2014); DOI: 10.1016/j.synthmet.2014.04.001.
- Nearly 100% Triplet Harvesting in Conventional Fluorescent Dopant-Based Organic Light-Emitting Devices Through Energy Transfer from Exciplex, X. Liu et al., Adv. Mater., 27 (12); 2025-2030 (2015); DOI: 10.1002/adma.201500013.
- Prediction and Design of Efficient Exciplex Emitters for High-Efficiency, Thermally Activated Delayed-Fluorescence Organic Light-Emitting Diodes, X. Liu et al., Adv. Mater., 27 (14); 2378-2383 (2014); DOI: 10.1002/adma.201405062..
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