Stanford Optics supplies UGH-2 (1,4-Bis(triphenylsilyl)benzene) Powder in high-purity powder form, suitable for research environments and small-scale OLED fabrication workflows.
UGH-2 (1,4-Bis(triphenylsilyl)benzene) is commonly used as a host material for blue phosphorescent OLEDs, especially with emitters like FirPic. It offers a large energy gap of around 4.4 eV and a high triplet energy (ET ≈ 3.5 eV), both of which are key to achieving efficient and long-lasting blue emission—a critical challenge in OLED design.
Its deep HOMO level (about –7.2 eV) also makes UGH-2 a reliable choice for use as an electron transport or hole-blocking material. In multi-layer stacks, this can help reduce exciton quenching and improve charge balance.
High triplet energy (~3.5 eV), supports blue emission
Broad energy gap (~4.4 eV)
Deep HOMO level (~7.2 eV), suppresses hole injection
Functions as ETL or HBL in layered devices
Good thermal and photo stability under operating conditions
TADF Host Material: Ideal for blue-emitting dopants in PhOLEDs
ETL / HBL Material: Supports efficient charge transport and recombination control
OLED & Display Research: Commonly used in lab-scale OLED device fabrication and optoelectronic studies
RIDADR |
NONH for all modes of transport |
WGK Germany |
3 |
CAS number |
40491-34-7; 18856-08-1 |
Full name |
1,4-Bis(triphenylsilyl)benzene |
Chemical formula |
C42H34Si2 |
Molecular weight |
594.89 |
Absorption |
λmax 265 nm in DCM |
Fluorescence |
λem 298 nm in DCM |
HOMO/LUMO |
HOMO = 7.2 eV, LUMO = 2.8 eV (ET = 3.5 eV) |
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