Description

4,4'-Dibromo-9,9'-Spirobifluorene is a high-purity, functionalized spirobifluorene derivative, a key organic building block prized for its rigid, three-dimensional structure and excellent thermal and morphological stability. This compound is essential for the synthesis of advanced organic electronic materials, where its bromine substituents serve as reactive handles for further cross-coupling and functionalization. It is primarily sought by R&D and production teams in the organic light-emitting diode (OLED), organic photovoltaic (OPV), and semiconductor materials sectors for creating high-performance host, transport, or emitter layers.

Application

• OLED Materials Synthesis: A crucial precursor for manufacturing host materials, electron transport materials (ETMs), and hole-blocking layers in phosphorescent and thermally activated delayed fluorescence (TADF) OLED devices.
• Organic Photovoltaic (OPV) Cells: Used as a core building block for developing novel donor or acceptor materials to enhance power conversion efficiency and device stability.
• Organic Field-Effect Transistors (OFETs): Serves as a starting material for synthesizing high-mobility semiconducting polymers and small molecules.
• Perovskite Solar Cells: Employed in the design of organic hole-transport materials (HTMs) to improve interfacial properties and long-term performance.
• Luminescent Materials & Sensors: Acts as a scaffold for creating fluorescent probes, chemosensors, and bio-imaging agents due to its tunable photophysical properties.
• Cross-Coupling Reactions: The bromine atoms are ideal sites for Suzuki, Stille, or Buchwald-Hartwig coupling reactions to construct complex, conjugated molecular architectures.
• Polymer Chemistry: A monomer for synthesizing high-performance, rigid-rod polymers with enhanced thermal and mechanical properties for specialty plastics.
• Academic & Industrial R&D: A valuable reagent for exploring new organic electronic materials and photophysical phenomena in research laboratories.

Basic Information

Product Name	4,4'-Dibromo-9,9'-Spirobifluorene
CAS No.	1257321-41-7
Molecular Formula	C25H14Br2
Molecular Weight	498.19 g/mol
Synonyms	2,2',7,7'-Tetrabromo-9,9'-spirobi[9H-fluorene]; 9,9'-Spirobifluorene-4,4'-dibromide; 4,4'-Dibromospirobifluorene; 2,2',7,7'-Tetrabromospirobifluorene; SBF-Br4 (common abbreviation); 4,4'-Dibromo-9,9'-bifluorenylidene; Dibrominated Spirobifluorene
EINECS	Contact for details

Quality Control

Our 4,4'-Dibromo-9,9'-Spirobifluorene is manufactured under strict quality management protocols to ensure batch-to-batch consistency and high purity, critical for sensitive electronic applications. Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing key parameters such as purity, identity, and impurity profiles. We support custom synthesis and purity grade adjustments (e.g., >98%, >99%, >99.5%) to meet specific research or production requirements.

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 the container sealed to prevent contamination and moisture absorption. Handle and store in accordance with good laboratory practices.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Heavy Metals	< 20 ppm
Residue on Ignition	< 0.1%
Solubility	Soluble in common organic solvents (THF, DCM, Toluene)

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