DPPS

CAS Number 1152162-74-7

Charge Transport Layer Materials, Electron Transport Layer Materials, High Purity Sublimed Materials, Materials, OLED Materials, Semiconducting Molecules, TADF Materials

MSDS

DPPS, ETL and HBL material for photo-electronic devices

High-purity (>99.0%) and available online for priority dispatch

Diphenyl-bis[4-(pyridin-3-yl)phenyl]silane, DPPS, has two pyridyl groups attached to the tetra-phyenylsilane. Hence, it is electron-deficient.

Almost considered as an insulator, DPPS is a weak electron-transporting material with a wide bandgap E_g = 4.0 eV. Due to its deep HOMO energy level, DPPS is also used as a hole-blocking layer material in photo-electronic devices.

General Information

CAS number	1152162-74-7
Full name	Diphenyl-bis(4-(pyridin-3-yl)phenyl)silane
Chemical formula	C₃₄H₂₆N₂Si
Molecular weight	490.67 g/mol
Absorption	λ_max 251 nm in DCM
Fluorescence	λ_em 366 nm in DCM
HOMO/LUMO	HOMO = 6.5 eV, LUMO = 2.5 (E_T = 2.7 eV)
Synonyms	3,3'-[(Diphenylsilylene)di-4,1-phenylene]bispyridine
Classification / Family	Organic electronics, Hole-blocking layer materials (HBL), Electron-transporting layer materials (ETL), TADF-OLEDs, Sublimed materials.

Product Details

Purity	Sublimed >99.0% (HPLC)
Melting point	TGA: >250 °C (0.5% weight loss)
Colour	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.

Chemical Structure

Device Structure(s)

Device structure	ITO/TPDPES:TBPAH (20 nm)/BTPD (20 nm)/BCBP:15%FIrpic (30 nm)/DPPS (30 nm)/LiF (0.5 nm)/Al (100 nm) [1]
Colour	Blue
Max. Luminance	10,578 cd/m²
Max. Current Efficiency	50.5 cd/A
Max. EQE	22.0%
Max. Power Efficiency	47.0 lm W^-1

Device structure	ITO/HATCN (10 nm)/NPD (40 nm)/TAPC (10 nm)/4% Pt1O2me₂:26mCPy (25 nm)/DPPS (10 nm)/BmPyPB(40 nm)/LiF/Al [2]
Colour	White
Max. Current Efficiency	80.3 cd/A
Max. EQE	26.7%
Max. Power Efficiency	68.3 lm W^-1

Device structure	ITO/PEDOT:PSS (70 nm)/TAPC (15 nm)/mCP (5 nm)/mCPCN:DMAC-TRZ 8 wt% (20 nm)/DPPS (5 nm)/ 3TPYMB (45 nm)/LiF (0.5 nm)/Al (150 nm) [3]
Colour	Green
Max Current Efficiency	71.2 cd/A
Max EQE	21.8%
Max. Power Efficiency	60.9 lm W^-1

Device structure	ITO/HATCN (10 nm)/NPD (40 nm)/TAPC (10 nm)/6% PtON1: 26mCPy (20 nm)/6% PtOO8: 26mCPy (2 nm)/2% PtN3N-ptb:26mCPy (3 nm)/DPPS* (10 nm)/BmPyPB (40 nm)/LiF (1 nm)/Al (100 nm) [4]
Colour	White
Current Efficiency@100 cd/m²	40 cd/A
EQE@100 cd/m²	18.4%
Power Efficiency@100 cd/m²	25 lm W^-1

Device structure	ITO/TAPC (45 nm)/mCP (10 nm)/BImBP:12% FIrpic (35 nm)/DPPS* (55 nm)/LiF (0.9 nm)/Al (120 nm) [5]
Colour	Blue
Max. Luminance	9,513 cd/m²
Max. Current Efficiency	25.7 cd/A
Max. EQE	22.0%
Max. Power Efficiency	50.4 lm W^-1

*For chemical structure information, please refer to the cited references.

Pricing

Grade	Order Code	Quantity	Price
Sublimed (>99.0% purity)	M2130A1	250 mg	£310
Sublimed (>99.0% purity)	M2130A1	500 mg	£500
Sublimed (>99.0% purity)	M2130A1	1 g	£850

MSDS Documentation

DPPS MSDS sheet

Literature and Reviews

Nearly 100% Internal Quantum Efficiency in an Organic Blue-Light Electrophosphorescent Device Using a Weak Electron Transporting Material with a Wide Energy Gap, L Xiao et al., Adv. Mater., 21, 1271–1274 (2009); DOI: 10.1002/adma.200802034.
Tetradentate Platinum Complexes for Effi cient and Stable Excimer-Based White OLEDs, T. Fleetham et al., Adv. Funct. Mater., 24, 6066–6073 (2014); DOI: 10.1002/adfm.201401244.
A versatile thermally activated delayed fluorescence emitter for both highly efficient doped and non-doped organic light emitting devices, W-L. Tsai et al., Chem. Commun., 51, 13662 (2015); DOI: 10.1039/c5cc05022g.

Efficient white OLEDs employing red, green, and blue tetradentate platinum phosphorescent emitters, G. E. Norby et al., Org. Electron., 37, 163e168 (2016); doi: 10.1016/j.orgel.2016.06.007.
Novel Benzimidazole Derivatives as Electron-Transporting Type Host To Achieve Highly Efficient Sky-Blue Phosphorescent Organic Light-Emitting Diode (PHOLED) Device, J. Huang et al., Org. Lett., 16 (20), 5398–5401 (2014); DOI: 10.1021/ol502602t.
Nitrogen heterocycle-containing materials for highly efficient phosphorescent OLEDs with low operating voltage, D. Chen et al., J. Mater. Chem. C, 2, 9565 (2014); DOI: 10.1039/c4tc01941e.