Description

9,9'-Spirobi[9H-Fluorene] is a high-purity, polycyclic aromatic hydrocarbon building block with a rigid, three-dimensional structure. This compound is valued for its exceptional thermal stability and unique electronic properties, making it a critical intermediate in advanced material synthesis. It is primarily sought by manufacturers in the OLED, pharmaceutical, and specialty polymer industries for developing high-performance organic semiconductors, ligands, and heat-resistant polymers.

Application

• OLED Materials: Serves as a core building block for host and electron-transport materials in organic light-emitting diodes (OLEDs) due to its high triplet energy and thermal stability.
• Pharmaceutical Intermediates: Used in the synthesis of complex drug molecules and bioactive compounds where a rigid, bulky scaffold is required.
• Ligand Synthesis: Acts as a precursor for constructing sophisticated ligands in catalysis and coordination chemistry.
• High-Performance Polymers: Incorporated into polyimides and other specialty polymers to enhance thermal resistance, mechanical strength, and dimensional stability.
• Organic Electronics: Utilized in the development of organic field-effect transistors (OFETs) and photovoltaic materials.
• Fluorescent Dyes & Sensors: Functions as a backbone for creating novel fluorescent probes and chemosensors.

Basic Information

Product Name	9,9'-Spirobi[9H-Fluorene]
CAS No.	159-66-0
Molecular Formula	C25H16
Molecular Weight	316.40 g/mol
Synonyms	Spirobifluorene; 9,9'-Spirobifluorene; 9,9'-Spirobi(9H-fluorene); 2,2'-Spirobi[9H-fluorene]; 9,9'-Bifluorenylidene; NSC 407292; 9H,9'H-9,9'-Spirobifluorene; 9,9'-Spiro[9H-fluorene]
EINECS	205-867-5

Quality Control

Our 9,9'-Spirobi[9H-Fluorene] is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC, GC, and NMR, to ensure high purity and batch-to-batch consistency. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming compliance with agreed specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	242 - 248 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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