4-Bromo-9,9-diphenylfluorene (CAS 713125-22-5)

Application and positioning

The 4-position puts the bromine next to the 9,9-diphenyl centre, so the coupling product comes out twisted rather than planar. That twist is what suppresses aggregation in the solid state. 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

• 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)
• N,9,9-triphenyl-9H-fluoren-2-amine (CAS 860465-14-1)

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