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4,4'-(Diphenylsilanediyl)bis(N,N-diphenylaniline) (TSBPA) is diphenylsilyl based with two electron donating triphenylamine units. For its electron rich nature, TSBPA is normally used as a high triplet energy hole transport material for blue phosphorescent organic light-emitting diodes (PHOLEDs).
Also due to its electron donating nature, TSBPA can also be used together with electron accepting materials to form exciplex as emitting layer materials. Green PhOLEDs based on TSBPA:PO-T2T exciplex showed s TADF emission with close to the maximum theoretical power efficiency and EQE of 60.9 cd/A, 71 Im/W and 20% respectively.
λmax 309 nm in DCM
λem 376 nm in DCM
HOMO = 5.51 eV, LUMO = 2.30 eV, ET=2.9 eV 
Full chemical name
Classification / Family
Triphenylamine derivatives, Hole transport layer (HTL), Electron blocking layer (EBL), TADF exciplex materials, Phosphorescent organic light-emitting diodes (PHOLEDs), Sublimed materials
Realizing 20% External Quantum Efficiency in Electroluminescence with Efficient Thermally Activated Delayed Fluorescence from an Exciplex, M. Chapran et al., ACS Appl. Mater. Interfaces, 11 (14), 13460–13471 (2019); DOI: 10.1021/acsami.8b18284.
Molecular Design Strategies for Color Tuning of Blue TADF Emitters, P. Stachelek et al., ACS Appl. Mater. Interfaces, 11, 27125−27133 (2019); DOI: 10.1021/acsami.9b06364.
Less Is More: Dilution Enhances Optical and Electrical Performance of a TADF Exciplex, M. Colella et al., J. Phys. Chem. Lett., 10, 793−798 (2019); DOI: 10.1021/acs.jpclett.8b0364.
Low driving voltage and high power efficiency in blue phosphorescent organic light-emitting diodes using aromatic amine derivatives with diphenylsilyl linkage, C. Lee et al., Synth. Met., 167 (1), 1-4 (2013); DOI: 10.1016/j.synthmet.2013.02.001.
Recent progress on exciplex-emitting OLEDs, H. Kim etal., J. Inf. Disp, 20 (3), 105-121 (2019); DOI: 10.1080/15980316.2019.1650838.
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. All products are for laboratory and research and development use only, and may not be used for any other purpose including health care, pharmaceuticals, cosmetics, food or commercial applications.