Description

2,2',7,7'-Tetrabromo-9,9'-Spirobifluorene is a high-purity, multi-brominated organic compound, identified by CAS NO 128055-74-3, that serves as a critical advanced intermediate in the synthesis of sophisticated materials. Its rigid, three-dimensional spirobifluorene core functionalized with bromine atoms makes it an exceptionally valuable building block for creating high-performance polymers and electronic materials. This compound is essential for R&D and production in the organic electronics, photonics, and specialty polymer industries, where precise molecular architecture dictates final product performance.

Application

• Organic Light-Emitting Diode (OLED) Materials: A key precursor for synthesizing host, hole-transport, or electron-transport materials in OLED displays and lighting due to its excellent thermal stability and electron affinity.
• Organic Photovoltaic (OPV) Cells: Used in the development of electron-accepting or donor materials to enhance the efficiency and stability of solar cells.
• Polymer Synthesis: Serves as a monomer or cross-linking agent for creating high-refractive-index polymers, flame-retardant materials, and engineering plastics with enhanced thermal properties.
• Liquid Crystal Displays (LCDs): An intermediate for producing photoalignment materials and other functional components in advanced display technologies.
• Pharmaceutical Intermediates: Employed in the research and development of complex drug molecules, leveraging its unique brominated spiro structure.
• Academic & Industrial R&D: A valuable reagent for material scientists and chemists exploring new conjugated systems, ligands for catalysis, and novel organic semiconductors.

Basic Information

Product Name	2,2',7,7'-Tetrabromo-9,9'-Spirobifluorene
CAS No.	128055-74-3
Molecular Formula	C25H12Br4
Molecular Weight	631.98 g/mol
Synonyms	9,9'-Spirobi[9H-fluorene], 2,2',7,7'-tetrabromo-; 2,2',7,7'-Tetrabromospirobifluorene; Spirobifluorene, 2,2',7,7'-tetrabromo-; TBPSF; Tetrabromospirobifluorene; 2,2',7,7'-Tetrabromo-9,9'-spirobi[fluorene]; 128055-74-3 (CAS)
EINECS	Contact for details

Quality Control

Our 2,2',7,7'-Tetrabromo-9,9'-Spirobifluorene is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity, critical for sensitive electronic and pharmaceutical applications. Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles. We support customer audits and can provide material to meet specific research or cGMP guidelines upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Keep away from heat, sparks, and open flame. This material is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.