Description

9-(2,4-Cyclopentadienylidene)-9H-Fluorene is a specialized organic compound featuring a unique conjugated structure formed by a fluorene unit fused with a cyclopentadienylidene moiety. This molecular architecture makes it a valuable intermediate and building block in advanced materials chemistry. It is primarily sought by research and development teams in the fine chemical, pharmaceutical, and material science sectors for synthesizing novel compounds with tailored electronic or optical properties.

Application

• Organic Electronic Materials: Serves as a key precursor or dopant in the development of organic light-emitting diodes (OLEDs), organic photovoltaics (OPVs), and field-effect transistors (OFETs).
• Pharmaceutical Intermediates: Used in the research and synthesis of complex drug candidates, particularly those requiring rigid, polycyclic frameworks.
• Ligand Synthesis: Acts as a starting material for creating novel ligands in organometallic chemistry and catalysis.
• Polymer Science: Incorporated as a monomer or additive to modify the properties of high-performance polymers.
• Dye and Pigment Research: Explored for the development of new dyes, pigments, and fluorescent markers due to its extended pi-conjugation.
• Academic & Industrial R&D: A crucial compound for fundamental research in synthetic organic chemistry and materials science.

Basic Information

Product Name	9-(2,4-Cyclopentadienylidene)-9H-Fluorene
CAS No.	27949-39-9
Molecular Formula	C₁₈H₁₂
Molecular Weight	228.29 g/mol
Synonyms	9H-Fluorene, 9-(2,4-cyclopentadien-1-ylidene)-; 9-(Cyclopentadienylidene)fluorene; 9-Fluorenylidenecyclopentadiene; 9-(2,4-Cyclopentadien-1-ylidene)-9H-fluorene; Fluorene, 9-(2,4-cyclopentadien-1-ylidene)-; 9-(2,4-Cyclopentadienylidene)fluorene
EINECS	Contact for details

Quality Control

We maintain stringent quality control protocols for all our chemical products. Each batch of 9-(2,4-Cyclopentadienylidene)-9H-Fluorene is analyzed using advanced techniques like HPLC, GC, and NMR to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment and is available upon request to support your quality assurance processes.

Storage

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

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
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.