Description

4,4'-Difluorodiphenylacetylene is a high-purity organic building block characterized by its rigid, linear acetylene core flanked by fluorinated aromatic rings. This compound matters as a critical synthon in advanced materials science and pharmaceutical research, where its unique electronic properties and structural rigidity are highly valued. It is primarily needed by R&D chemists and process engineers in the fields of organic electronics, liquid crystal displays (LCDs), and as a precursor for novel drug candidates and agrochemicals.

Application

• Organic Semiconductor Precursor: A key monomer for synthesizing conjugated polymers and small molecules used in OLEDs, OFETs, and photovoltaic cells.
• Liquid Crystal Material Intermediate: Serves as a rigid, fluorinated core unit in the synthesis of high-performance liquid crystals for display technologies.
• Pharmaceutical Building Block: Used in medicinal chemistry to create novel active pharmaceutical ingredients (APIs), leveraging the fluorine atoms for metabolic stability and bioavailability.
• Agrochemical Synthesis: An intermediate in the development of advanced herbicides and pesticides with enhanced efficacy.
• Metal-Organic Framework (MOF) Linker: Employed in the construction of porous coordination polymers for gas storage and separation applications.
• Cross-Coupling Reactions: A valuable substrate in Sonogashira, Heck, and other palladium-catalyzed coupling reactions to construct complex molecular architectures.

Basic Information

Product Name	4,4'-Difluorodiphenylacetylene
CAS No.	5216-31-9
Molecular Formula	C₁₄H₈F₂
Molecular Weight	214.21 g/mol
Synonyms	1,1'-(1,2-Ethynediyl)bis[4-fluorobenzene]; 4,4'-Difluorodiphenylethyne; 4-Fluorophenylacetylene, 4'-fluoro-; Bis(4-fluorophenyl)acetylene; 4,4'-Difluorotolan; p,p'-Difluorodiphenylacetylene; 4,4'-Difluorobibenzyl
EINECS	Contact for details

Quality Control

Our 4,4'-Difluorodiphenylacetylene is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high purity and consistency. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, 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	Contact for details

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