Surface Coating / Alfa Chemistry


Cat.No ACM128055743-2

Basic Information Description Application Features And Benefits
CAS 128055-74-3
Catalog Number ACM128055743-2
Synonyms 2,2',7,7'-Tetrabromo-9,9'-spiro-bifluorene
IUPAC Name 2,2',7,7'-Tetrabromo-9,9'-spirobi[fluorene]
Molecular Weight 632
Molecular Formula C25H12Br4
Canonical SMILES C1=CC2=C(C=C1Br)C3(C4=C2C=CC(=C4)Br)C5=C(C=CC(=C5)Br)C6=C3C=C(C=C6)Br
InChI InChI=1S/C25H12Br4/c26-13-1-5-17-18-6-2-14(27)10-22(18)25(21(17)9-13)23-11-15(28)3-7-19(23)20-8-4-16(29)12-24(20)25/h1-12H
Boiling Point 633.7 ºC/760mmHg (lit.)
Melting Point 395-400 °C
Flash Point 322.5 ºC
Purity 95%+
Density 2.12 g/cm³
Solubility Insoluble in water
Appearance White to off-white solid
Storage Sealed in dry,Room Temperature
Assay 95% (HPLC)
MDL Number MFCD08704220
Packaging Packaging
1, 5 g in glass bottle
PubChem ID 329767083
Quality Level 100
Refractive Index n20/D 1.843 (lit.)
Description 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene is a spirobifluorene (SBF) derivative and is used as a blue-emitting material in electroluminescent devices. The spirobifluorene linkage in the molecule helps in decreasing the crystallization tendency and also increases the colour stability by preventing the formation of aggregates or excimers. They possess high photoluminescence efficiency and good chemical stability.
Application Blue light emitting material in Organic Light Emitting Diodes (OLEDs).
Features And Benefits High glass-transition temperature, excellent thermal stability, soluble in common organic solvents, multi-layer devices can be fabricated by thermal cross-linking of cast films. Easy colour tunability through the introduction of low band gap co-monomers.

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