4-bromo-9,9'-spirobi[9H-fluorene] (CAS 1161009-88-6)

Application and positioning

Bromine at C-4 sits on the ring that carries the spiro carbon — the most crowded position of the spirobifluorene and the one with the strongest steric shielding. It is the entry to 4-substituted spirobifluorenes used in hole-transport materials and in ortho-linked emitters. Laurand supplies it from audited Chinese producers in kilogram to multi-hundred-kilogram lots, with the documentation your market requires.

Quality and documentation

• Batch-specific Certificate of Analysis with HPLC or GC purity and a full impurity profile
• Trace metal report (Pd, Fe, Cu) on request — residual catalyst is what limits OLED device lifetime
• Water content by Karl Fischer and residual solvent data for solution-processed grades
• SDS in the language of your market, with GHS classification for the destination
• Pre-shipment sample for laboratory approval on first orders

Packaging and handling

• 1 kg, 5 kg and 25 kg fibre drums with inner PE liner; amber glass bottles for gram to kilogram quantities on request
• Sealed and protected from light — aromatic OLED intermediates discolour under prolonged UV exposure
• Store at ambient temperature in a dry, dark warehouse, away from strong oxidising agents

Related products

• 2,4-dichloro-6-([1,1′-biphenyl]-4-yl)-1,3,5-triazine (CAS 10202-45-6)
• 7,7-Dimethyl-7H-fluoreno[4,3-b]benzofuran (CAS 1374677-48-1)
• 9,9-Dimethyl-9H-Fluoren-2-yl-Boronic Acid (CAS 333432-28-3)
• Boronic acid, B-9,9′-spirobi[9H-fluoren]-2′-yl- (CAS 236389-21-2)

Values marked (predicted) are calculated estimates; the remaining data are published literature values. The specification of the delivered lot is confirmed with the quotation.