67665-47-8

Density：1.74

Boiling Point：557.4ºC at 760 mmHg

Flash Point：335.1ºC

Refractive Index：1.803

2,2'-Dibromo-9,9'-spirobifluorene is an organic compound mainly used as an intermediate for the production of phosphorescent materials, such as OLEDs and organic photovoltaics. It is a white to light yellow powder, which is insoluble in water but soluble in common organic solvents.

The chemical structure of 2,2'-Dibromo-9,9'-spirobifluorene consists of two fused benzene rings connected by a four-membered spiro ring and two bromine atoms. It is synthesized by a two-step process, in which 2,2'-dibromo-9,9'-spirobiindane is first reacted with an alkyl halide to form a dihalide, and then reacted with a base to form the desired product.

2,2'-Dibromo-9,9'-spirobifluorene is a key intermediate for the synthesis of phosphorescent materials. When exposed to ultraviolet light, it emits blue-green light which is used in OLEDs and organic photovoltaics. It is also used in the production of optical brightening agents, dye intermediates, and luminescent materials.

2,2'-Dibromo-9,9'-spirobifluorene is highly toxic and should be handled with care. It should be stored in a cool, dry place and away from sunlight. It should be used in a well-ventilated area and protective clothing and gloves should be worn when handling it.