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All Semiconducting Molecules, OLED Host Materials, Sublimed Materials, TADF Materials, Transport Layer Materials

Product Code M2088A1-100mg
Price $225 ex. VAT

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3TPYMB, an excellent ETL material which allows efficient electron injection

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

Tris(2,4,6-trimethyl-3-(pyridin-3-yl)phenyl)borane (known as 3TPYM) is an excellent electron-transport material. With a LUMO energy level of 3.3 eV [1], just lower than most of the work function of cathodes (i.e. CsF/Al), it allows efficient electron injection. This prevents extra electrons from accumulating at the interface.

3TPYMB is also a hole-blocking material with high HOMO of 6.80 eV [1]. This is high enough to block the holes from being recombined with the electrons at the cathode.

3TPYMB has a high triplet-excited energy level (ET = 2.95 eV) [3].

General Information

CAS number 929203-02-1
Chemical formula C42H42BN3
Molecular weight 599.61 g/mol
Absorption* λmax 331 nm in THF
Fluorescence λem 382 nm in THF
Synonyms Tris(2,4,6-trimethyl-3-(pyridin-3-yl)phenyl)borane, Tri[3-(3-pyridyl)mesityl]borane
Classification / Family Electron-transporting materials, Phosphorescent host materials, Light-emitting diodes, Perovskite solar cells, Organic electronics, TADF materials, Sublimed materials

* Measurable with an Optical Spectrometer, see our spectrometer application notes.

Product Details

Purity Sublimed >99.0% (HPLC)
Melting point TGA: 250 °C (0.5% weight loss)
Appearance White powder/crystals

*Sublimation is a technique used to obtain ultra pure-grade chemicals, see sublimed materials for OLED devices.

Chemical Structure

3TPYMB chemical structure
Chemical Structure of Tris(2,4,6-trimethyl-3-(pyridin-3-yl)phenyl)borane (3TPYMB)

Device Structure(s)

Device structure ITO/PEDOT:PSS/m-MTDATA*(20 nm)/ m-MTDATA:3TPYMB(60 nm)/3TPYMB(10 nm)/LiF(0.8 nm)/ Al(100 nm) [3]
Colour Red red light emitting device
Max. Luminance 17,100cd/m2
Max. Current Efficiency 36.79 cd/A
Device structure ITO/EHI608/TCTA/TCTA:3TP:Firpic (1:1:0.17)/3TPYMB/Al [6]
Colour Blue blue light emitting device
Max Power Efficiency 27.5 lm W-1
Max. Current Efficiency 36.0 cd/A
Device structure ITO/MoO3 (1 nm)/TAPC (40 nm)/mCP (10 nm)/DPEPO doped with 2* (12wt%, 20 nm)/3TPYMB (50 nm)/LiF (1  nm)/Al  (100 nm) [7] 
Colour Blue blue light emitting device
Max Current Efficiency 33.5 cd/A 
Max EQE 19.7
Max. Power Efficiency 26.3 lm W-1

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


Grade Order Code Quantity Price
Sublimed (>99.0% purity) M2088A1 100 mg £180
Sublimed (>99.0% purity) M2088A1 250 mg £400
Sublimed (>99.0% purity) M2088A1 500 mg £660

MSDS Documentation


Literature and Reviews

  1. Boosting thin-film perovskite solar cell efficiency through vacuum-deposited sub-nanometer small-molecule electron interfacial layers, W-H. Lee et al., Nano Energy 38, 66–71 (2017);
  2. Organic light-emitting diodes employing efficient reverse intersystem crossing for triplet-to-singlet state conversion, K. Goushi et al., Nat. Photonics 6, 253–258 (2012) doi:10.1038/nphoton.2012.31.
  3. Novel Electron-transport Material Containing Boron Atom with a High Triplet Excited Energy Level, D. Tanaka et al., Chem. Lett., 36, 262-263 (2007).
  4. Exciplex emission and decay of co-deposited 4,4′,4″-tris[3-methylphenyl(phenyl)amino]triphenylamine:tris-[3-(3-pyridyl)mesityl]borane organic light-emitting devices with different electron transporting layer thicknesses, Q Huang et al., Appl. Phys. Lett. 104, 161112 (2014); DIO: 10.1063/1.4870492.
  5. Metal-Oxide-Free Methylammonium Lead Iodide Perovskite-Based Solar Cells: the Influence of Organic Charge Transport Layers, O. Malinkiewicz et al., Adv. Energy Mater., 4, 1400345 (2014).
  6. Enhance efficiency of blue and white organic light emitting diodes with mixed host emitting layer using TCTA and 3TPYMB, T-C. Liao et al., Curr. Appl. Phys., 13, S152-S155, (2013).
  7. Bis-Tridentate Ir(III) Metal Phosphors for Efficient Deep-Blue Organic Light- Emitting Diodes, H-H. Kuo et al., Adv.Mater., 29, 1702464 (2017); DOI: 10.1002/adma.201702464.

To the best of our knowledge the information provided here is accurate. However, Ossila assume no liability for the accuracy of this page. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only, and may not be used for any other purpose including health care, military, pharmaceuticals, cosmetics, food, or commercial applications.

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