TFB

• CAT Number: M440124
• CAS Number: 220797-16-0
• Molecular Formula: (C51H61N)n
• Purity: ≥95%
• Synonyms: Poly(9,9-dioctylfluorene-alt-N-(4-sec-butylphenyl)-diphenylamine)
• Solubility: THF, toluene, chloroform
• Storage: Room Temperature (Recommended in a cool and dark place)
• IUPAC Name: N-(4-butan-2-ylphenyl)-4-(9,9-dioctyl-7-phenylfluoren-2-yl)aniline
• InChI: InChI=1S/C51H63N/c1-5-8-10-12-14-19-35-51(36-20-15-13-11-9-6-2)49-37-43(41-21-17-16-18-22-41)27-33-47(49)48-34-28-44(38-50(48)51)42-25-31-46(32-26-42)52-45-29-23-40(24-30-45)39(4)7-3/h16-18,21-34,37-39,52H,5-15,19-20,35-36H2,1-4H3
• InChIKey: RBFSUOVKQODUII-UHFFFAOYSA-N
• SMILES: CCCCCCCCC1(C2=C(C=CC(=C2)C3=CC=CC=C3)C4=C1C=C(C=C4)C5=CC=C(C=C5)NC6=CC=C(C=C6)C(C)CC)CCCCCCCC
• HOMO / LUMO: HOMO = 5.3 eV, LUMO = 2.3 eV

Poly(9,9-dioctylfluorene-alt-N-(4-sec-butylphenyl)-diphenylamine) (TFB, CAS 220797-16-0) is a triarylamine-based semiconducting polymer with a bandgap of 3.0 eV, characterized by HOMO and LUMO energy levels of 5.3 eV and 2.3 eV, respectively. Known for its relatively high hole mobility (2 × 10⁻³ cm² V⁻¹ s⁻¹), TFB is widely used as a hole-transporting material in optoelectronic devices. Its balanced energy alignment and good charge-transport properties make it a key component in polymer light-emitting diodes (PLEDs), OLEDs, and hybrid organic–inorganic devices. TFB’s combination of stability, solution processability, and efficient hole injection underscores its role in high-performance organic electronics.