BCPO
Bis-4-(N-carbazolyl)phenyl)phenylphosphine oxide - BCPO - is a bipolar host material containing phenylphosphine oxide as an electron withdrawing moeity and two carbazolyl groups as electron donating moieties. BCPO possesses a high triplet energy (ET ) of 3.01 eV and a high glass transition temperature (Tg) of 137 °C. The phosphine oxide moiety in the middle of the structure can effectively cut off the electron communication between the two N-phenyl carbazole groups, leading to a much higher triplet energy of BCPO than CBP.
Like CBP and mCBP, BCPO can be used as a universal host to blue, green and red fluorescent and phosphorescent devices using simple device architectures.
General Information
| CAS number | 1233407-28-7 |
| Full name | Bis-4-(N-carbazolyl)phenyl)phenylphosphine oxide |
| Chemical formula | C42H29N2OP |
| Molecular weight | 608.67 g/mol |
| Absorption | λmax 292 nm in DCM |
| Fluorescence | λmax 388 nm in DCM |
| HOMO/LUMO | HOMO = 5.76 eV, LUMO = 2.19 eV; ET = 3.01 eV [1] |
| Synonyms | 9,9′-(4,4′-(Phenylphosphoryl)bis-(4,1-phenylene))bis(9H-carbazole) |
| Classification / Family | Carbazole derivatives, Bipolar host materials, Fluorescent host materials, Phosphorescent host materials, TADF materials, Organic printed electronics. |
Product Details
| Purity | Sublimed > 99% (HPLC) |
| Melting point | Tg = 137 °C |
| Appearance | White crystals/powder |
Chemical Structure
Device Structure(s)
| Device structure | ITO/NPB (10 nm)/TCTA (20 nm)/BCPO:FIr6 (7–8%, 30 nm)/BCP (10nm)/Alq (50 nm)/LiF (1 nm)/Al (100 nm) [1] |
| Colour | Blue 
|
| Max. Luminance | 28,718 cd/m2 |
| Max. Current Efficiency | 36.8 cd/A |
| Max. EQE | 19.8% |
| Max. Power Efficiency | 33.1 lm W-1 |
| Device structure | ITO/HATCN (4.2 nm)/TAPC (34 nm)/BCPO: 5 wt% p-AC-DBNA* (23 nm)/TmPyPB (21 nm)/LiF (1 nm)/Al (100 nm) [2] |
| Colour | Sky Blue
|
| Max. Luminance | 28,600 cd/m2 |
| Max. Current Efficiency | 43.0 cd/A |
| Max. EQE | 19.3% |
| Max. Power Efficiency | 42.3 lm W-1 |
| Device structure | ITO/HATCN (4.2 nm)/TAPC (34 nm)/BCPO: 5 wt% p-AC-DBNA* (23 nm)/TmPyPB (21 nm)/LiF (1 nm)/Al (100 nm) [2] |
| Colour | Green 
|
| Max. Luminance | 69,160 cd/m2 |
| Max. Current Efficiency | 54.4 cd/A |
| Max. EQE | 19.2% |
| Max. Power Efficiency | 49.8 lm W-1 |
| Device structure | ITO/HATCN (4.2 nm)/TAPC (34 nm)/BCPO: 10 wt% m-AC-DBNA* (23 nm)/TmPyPB (21 nm)/LiF (1 nm)/Al (100 nm) [2] |
| Colour | Sky Blue
|
| Max. Luminance | 24,600 cd/m2 |
| Max. Current Efficiency | 42.0 cd/A |
| Max. EQE | 17.1% |
| Max. Power Efficiency | 34.1 lm W-1 |
| Device structure | ITO/NPB(40 nm)/TCTA(10 nm)/TAT-3DBTO2*:BCPO(1:9,30 nm)/TPBi(40 nm)/LiF(1 nm)/Al (100 nm) [3] |
| Colour | Green
|
| Max. Luminance | 10,420 cd/m2 |
| Max. Current Efficiency | 50.8 cd/A |
| Max. EQE | 30.9% |
| Max. Power Efficiency | 38.7 lm W-1 |
| Device structure | ITO/NPB (20 nm)/ TCTA (10 nm)/BCPO:Ir(ppy)3 (8% 30 nm)/TPOTP (40 nm)/LiF (1 nm)/Al (100 nm) [4] |
| Colour | Green
|
| Max. Luminance | 115,000 cd/m2 |
| Max. Current Efficiency | 97.6 cd/A |
| Max. EQE | 25.2% |
| Max. Power Efficiency | 101 lm W-1 |
| Device structure | ITO/NPB (30 nm)/mCP (20 nm)/BCPO Firpic (8 wt%) (30 nm)/ TPOTP (40 nm)/LiF (1 nm)/Al (100 nm); [4] |
| Colour | Sky Blue
|
| Max. Luminance | 35,600 cd/m2 |
| Max. Current Efficiency | 49.1 cd/A |
| Max. EQE | 23.1% |
| Max. Power Efficiency | 41.8 lm W-1 |
Pricing
| Grade | Order Code | Quantity | Price |
| Sublimed (>99% purity) | M2198A1 | 100 mg | £198.00 |
| Sublimed (>99% purity) | M2198A1 | 250 mg | £396.00 |
| Sublimed (>99% purity) | M2198A1 | 500 mg | £636.00 |
| Sublimed (>99% purity) | M2198A1 | 1 g | £1070.00 |
MSDS Documentation
BCPO MSDS sheetLiterature and Reviews
- A Highly Efficient Universal Bipolar Host for Blue, Green, and Red Phosphorescent OLEDs, H. Chou et al., Adv. Mater., 22, 2468–2471 (2010); DOI: 10.1002/adma.201000061.
- Isomeric Bright Sky-Blue TADF Emitters Based on Bisacridine Decorated DBNA: Impact of Donor Locations on Luminescent and Electroluminescent Properties, G. Meng et al., Adv. Optical Mater., 7, 1900130 (2019); DOI: 10.1002/adom.201900130.
- Triazatruxene: A Rigid Central Donor Unit for a D–A3 Thermally Activated Delayed Fluorescence Material Exhibiting Sub-Microsecond Reverse Intersystem Crossing and Unity Quantum Yield via Multiple Singlet–Triplet State Pairs, P. L. dos Santos et al., Adv. Sci., 5, 1700989 (2018); DOI: 10.1002/advs.201700989.
- A high triplet energy, high thermal stability oxadiazole derivative as the electron transporter for highly efficient red, green and blue phosphorescent OLEDs, C-H. Shih et al., J. Mater. Chem. C, 3, 1491-1496 (2015); DOI: 10.1039/C4TC02348J.
To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.