1257321-41-7

Basic information

• Product Name: 4,4’-dibromo-9,9’-spirobifluorene
• Synonyms: 4,4’-dibromo-9,9’-spirobifluorene
• CAS NO: 1257321-41-7
• Molecular Weight: 474.194
• Mol File: 1257321-41-7.mol
• Article Data: 7

Chemical Properties

• CAS DataBase Reference: 4,4’-dibromo-9,9’-spirobifluorene(CAS DataBase Reference)
• NIST Chemistry Reference: 4,4’-dibromo-9,9’-spirobifluorene(1257321-41-7)
• EPA Substance Registry System: 4,4’-dibromo-9,9’-spirobifluorene(1257321-41-7)

Safety Data

• Hazardous Substances Data: 1257321-41-7(Hazardous Substances Data)

Usage

General Description

4,4’-dibromo-9,9’-spirobifluorene is a chemical compound consisting of two spirobifluorene units connected by a 4,4’-dibromo bond. It is a rigid, symmetrical, and highly stable molecule that is often used in organic electronic materials, such as organic light emitting diodes (OLEDs) and organic photovoltaic cells. The presence of bromine atoms on the spirobifluorene backbone enhances its electron-accepting ability, making it useful in the development of high-performance organic semiconductors. Additionally, its unique structure and properties make it a promising candidate for various applications in materials science, nanotechnology, and optoelectronics.

Upstream product

• 69200-16-4 2'-bromo-[1,1'-biphenyl]-2-carboxylic acid 
• 13029-09-9 2,2'-dibromobiphenyl 
• 4269-17-4 4-bromo-9H-fluorene-9-one 

Relevant articles and documents

Tri-, tetra- and pentamers of 9,9'-spirobifluorenes through full ortho -linkage: High triplet-energy pure hydrocarbon host for blue phosphorescent emitter

4,4'-Dibromo-9,9'-spirobifluorene was first synthesized, and from this intermediate, three fully ortho-linked tri-, tetra-, and pentamers of 9,9'-spirobifluorenes were constructed. The full ortho-linkage impedes the π conjugation of fluorene units, and guarantees their high triplet energies (ET = 2.80 eV). A device with the trimer as the first pure hydrocarbon host material for blue phosphor FIrpic shows a maximum current efficiency of 25 cd/A.

CONDENSED CYCLIC COMPOUND, COMPOSITION INCLUDING THE SAME, AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE CONDENSED CYCLIC COMPOUND

A condensed cyclic compound represented by Formula 1: wherein, in Formula 1, X11, X12, and R11 to R24 are the same as described in the specification.

Spirobifluorene compounds for organic electroluminescent devices

The present invention relates to compounds of the formula (1) which are suitable for use in electronic devices, in particular organic electroluminescent devices, and to electronic devices which comprise these compounds.