Description

Diphenylethyne- 3, 3', 5, 5'-Tetracarboxylic Acid (Pcn-14) is a high-purity, multi-functional aromatic carboxylic acid building block, primarily utilized as a key precursor in the synthesis of advanced materials. Its rigid, symmetrical structure with four carboxyl groups makes it exceptionally valuable for constructing metal-organic frameworks (MOFs), covalent organic frameworks (COFs), and high-performance polymers. This compound is essential for researchers and manufacturers in the fields of porous materials, specialty polymers, and organic electronics who require precise molecular architecture for developing next-generation functional materials.

Application

• Metal-Organic Framework (MOF) Synthesis: Serves as a versatile organic linker for constructing porous, crystalline MOFs with potential applications in gas storage, separation, and catalysis.
• Covalent Organic Framework (COF) Precursor: Used as a tetrahedral node for building highly ordered, porous 2D or 3D COF structures for sensing and optoelectronic devices.
• High-Performance Polymer Monomer: A critical building block for synthesizing polyimides, polyamides, and other thermally stable polymers with excellent mechanical properties.
• Ligand for Coordination Chemistry: Acts as a multidentate ligand for complexing with various metal ions, useful in creating catalysts or functional complexes.
• Crosslinking Agent: Employed in the formulation of advanced coatings, adhesives, and resins to enhance thermal and chemical resistance.
• Pharmaceutical Intermediate: Potential use in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs) requiring a rigid, functionalized core.
• Research & Development: A valuable reagent for academic and industrial R&D in material science, supramolecular chemistry, and nanotechnology.

Basic Information

Item	Details
Product Name	Diphenylethyne- 3, 3', 5, 5'-Tetracarboxylic Acid (Pcn-14)
CAS No.	422269-95-2
Molecular Formula	C22H10O8
Molecular Weight	402.31 g/mol
Synonyms	5,5'-(1,2-Ethynediyl)bis[1,3-benzenedicarboxylic acid]; 3,3',5,5'-Biphenyltetracarboxylic Acid, Ethynyl-; PCN-14 Ligand; Tetrakis(4-carboxyphenyl)ethylene derivative; 1,1,2,2-Tetrakis(3,5-dicarboxyphenyl)ethylene; H4ETTC; TATB-ethynyl; Ethynyl-biphenyl-3,3',5,5'-tetracarboxylic acid
EINECS	Contact for details

Quality Control

Our Diphenylethyne- 3, 3', 5, 5'-Tetracarboxylic Acid is produced under strict quality management protocols to ensure batch-to-batch consistency and high purity, suitable for sensitive research and industrial synthesis. Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles. We support compliance with REACH and other relevant global regulatory frameworks. Certificates of Analysis (COA) are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed in a dry environment to prevent degradation. Keep away from incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.5%
Solubility	Soluble in DMSO, DMF; slightly soluble in water

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