F8BT

• CAT Number: M440113
• CAS Number: 210347-52-7
• Molecular Formula: (C35H42N2S)n
• Purity: ≥95%
• Synonyms: Poly(9,9-dioctylfluorene-alt-benzothiadiazole), F8BT, PFBT
• Storage: Room Temperature (Recommended in a cool and dark place)
• IUPAC Name: 4-(9,9-dioctylfluoren-2-yl)-2,1,3-benzothiadiazole
• InChI: InChI=1S/C35H44N2S/c1-3-5-7-9-11-15-24-35(25-16-12-10-8-6-4-2)31-20-14-13-18-29(31)30-23-22-27(26-32(30)35)28-19-17-21-33-34(28)37-38-36-33/h13-14,17-23,26H,3-12,15-16,24-25H2,1-2H3
• InChIKey: QPPJZINEHSIVEW-UHFFFAOYSA-N
• SMILES: CCCCCCCCC1(C2=CC=CC=C2C3=C1C=C(C=C3)C4=CC=CC5=NSN=C54)CCCCCCCC
• HOMO / LUMO: HOMO = -5.9 eV, LUMO = -3.3 eV

F8BT is a green-emitting conjugated copolymer widely employed as a benchmark material in organic electronics. Its deep-lying HOMO (−5.9 eV) and LUMO (−3.3 eV) levels provide excellent air stability, while its ability to form liquid-crystalline and β-phases makes it highly versatile for fundamental studies. F8BT is used as an emissive layer in OLEDs, as a polymer with balanced ambipolar transport in OFETs and light-emitting transistors, and as a polymeric acceptor in OPVs. With its well-defined optoelectronic properties, F8BT remains an essential reference material across multiple device platforms.