CAS Number 199121-98-7
Bearing four triarylamine units, DNTPD is electron rich and normally used as hole transport or hole injection layer material in OLED and perovskite solar cell devices. It is an extended structure of TPD and NPB that are widely used in organic electronics.
DNTPD layer at ITO interface can reduce the hole injection barrier while at the same time improve the current efficiency by balancing the holes and electrons in the emitting layer of an OLED device.
| CAS number | 199121-98-7 |
|---|---|
| Full name | N1,N1'-(Biphenyl-4,4'-diyl)bis(N1-phenyl)-N4,N4-di-m-tolylbenzene-1,4-benzenediamine |
| Chemical formula | C64H54N4 |
| Molecular weight | 879.1 g/mol |
| Absorption* | λmax 326 nm in DCM |
| Fluorescence | λem 473 nm in DCM |
| HOMO/LUMO | HOMO = 5.1 eV, LUMO = 2.1 eV [1] |
| Synonyms | N,N'-Bis{4-[bis(3-methylphenyl)amino]phenyl}-N,N'-diphenyl-4,4'-biphenyldiamine |
| Classification / Family | Triarylamines, Organic electronics, Hole-injection layer materials (HIL), Hole transport layer (HTL) materials, Sublimed materials. |
* Measurable with a USB spectrometer
| Purity | Sublimed* >99% (HPLC) |
|---|---|
| Melting point | TGA: >250 °C (0.5% weight loss) |
| Appearance | Yellow powder/crystals |
* Sublimation is a technique used to obtain ultra pure-grade chemicals, see sublimed materials.
Chemical structure of DNTPD, CAS 199121-98-7
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