General information
- Name: Spiro-TTB
- Full name: 2,2',7,7'-Tetra(N,N-di-p-tolyl)amino-9,9-spirobifluorene
- CAS number: 515834-67-0
- Chemical formula: C81H68N4
- Molecular weight: 1097.43 g/mol
- Absorption: λmax = 385 nm in THF
- Photoluminescence: λmax = 409 nm in THF
- HOMO/LUMO: HOMO = 5.2 eV, LUMO = 1.9 eV
- Synonyms: N2,N2,N2′,N2′,N7,N7,N7′,N7′-Octa-p-tolyl-9,9′-spirobi[fluorene]-2,2′,7,7′-tetraamine, 2,2′,7,7′-Tetra(N, N-di-tolyl)amino-spiro-bifluorene
- Classification: Organic light-emitting diodes, Hole transport layer materials (HTL), Perovskite solar cells, Organic photovoltaic devices
- Purity: >98.0% (HPLC)
- Melting point: Tg = 146 °C
- Appearance: Light yellow powder/crystals