2,2',7,7'-Tetrabromo-9,9'-spirobifluorene

Synonym(s):2,2′,7,7′-Tetrabromo-9,9′-spirobi[9H-fluorene]

CAS NO.：128055-74-3
Empirical Formula: C25H12Br4
Molecular Weight: 631.98
MDL number: MFCD08704220
EINECS: 672-610-0
SAFETY DATA SHEET (SDS)
Update Date: 2025-07-24 18:13:44

2,2',7,7'-Tetrabromo-9,9'-spirobifluorene Structural

What is 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene?

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.

Chemical properties

White to light yellow powder

The Uses of 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene

2,2',7,7'-Tetrabromo-9,9'-spirobifluorene is used in the preparation of OLEDs using amorphous compounds with spiro-bifluorene core.

The Uses of 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene

2,2'',7,7''-Tetrabromo-9,9''-spirobifluorene is used in the preparation of OLEDs using amorphous compounds with spiro-bifluorene core.

What are the applications of Application

Blue light emitting material in Organic Light Emitting Diodes (OLEDs).

General Description

Properties of 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene

Melting point:	395-400°C
Boiling point:	633.7±55.0 °C(Predicted)
Density	2.12±0.1 g/cm3(Predicted)
storage temp.	Sealed in dry,Room Temperature
solubility	Chloroform
form	Solid
color	White to Off-White
CAS DataBase Reference	128055-74-3(CAS DataBase Reference)

Safety information for 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H302:Acute toxicity,oral H319:Serious eye damage/eye irritation
Precautionary Statement Codes	P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P337+P313:IF eye irritation persists: Get medical advice/attention.