Description

5,5'-([1,1'-Biphenyl]-4,4'-Diyldi-2,1-Ethynediyl)Bis-Isophthalic Acid is a high-purity, functionalized organic building block characterized by its rigid, conjugated biphenyl-ethynylene core and terminal carboxylic acid groups. This compound matters as a critical precursor for synthesizing advanced materials, particularly in the development of metal-organic frameworks (MOFs), covalent organic frameworks (COFs), and specialty polymers. It is essential for researchers and manufacturers in the fields of advanced materials science, organic electronics, and nanotechnology who require precise, multi-functional monomers to engineer materials with tailored porosity, conductivity, or optical properties.

Application

• Metal-Organic Framework (MOF) Synthesis: Serves as a versatile organic linker for constructing MOFs with large pore volumes and specific surface areas for gas storage, separation, and catalysis.
• Covalent Organic Framework (COF) Precursor: Acts as a key monomer for creating crystalline, porous 2D or 3D COFs used in sensing, optoelectronics, and energy storage devices.
• Specialty Polymer Development: Used to synthesize high-performance polymers, such as polyimides or polyamides, with enhanced thermal stability and mechanical properties for aerospace and electronics.
• Organic Electronic Materials: Functions as a building block for conjugated polymers or small molecules in organic light-emitting diodes (OLEDs), photovoltaics (OPVs), and field-effect transistors (OFETs).
• Surface Functionalization Agent: Employed to modify nanoparticles or solid surfaces with carboxylic acid groups for improved dispersion, biocompatibility, or further chemical grafting.
• Pharmaceutical Intermediate: Potential use in the synthesis of complex drug molecules or diagnostic agents due to its rigid, functionalized structure.

Basic Information

Product Name	5,5'-([1,1'-Biphenyl]-4,4'-Diyldi-2,1-Ethynediyl)Bis-Isophthalic Acid
CAS No.	901452-03-7
Molecular Formula	C32H18O8
Molecular Weight	530.48 g/mol
Synonyms	4,4'-(1,2-Ethynediyl)bis[1,1'-biphenyl]-5,5'-dicarboxylic acid; 5,5'-(Biphenyl-4,4'-diylbis(ethyne-2,1-diyl))diisophthalic acid; 4,4'-Diethynylbiphenyl-5,5'-dicarboxylic acid derivative; Biphenyl-4,4'-diylbis(ethyne-2,1-diyl)bis(5-isophthalic acid); [1,1'-Biphenyl]-4,4'-diyldi-2,1-ethynediylbis(5-carboxy-1,3-benzenedicarboxylic acid) (alternate IUPAC); BPDA-ethynylene linker; Extended biphenyl dicarboxylate linker
EINECS	Contact for details

Quality Control

Our 5,5'-([1,1'-Biphenyl]-4,4'-Diyldi-2,1-Ethynediyl)Bis-Isophthalic Acid is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity assessment and NMR for structural confirmation, to ensure compliance with research and development grade standards. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee reproducible performance in sensitive synthetic applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This compound may be light-sensitive and hygroscopic; therefore, containers should be kept sealed under an inert atmosphere (e.g., nitrogen or argon) for long-term storage to prevent moisture absorption and potential degradation.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 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.