CAS 119389-05-8 4-Phenylethynylphthalic Anhydride

NAVIGATION

4-Phenylethynylphthalic Anhydride

PRICE INQUIRY

Catalog Number

ACM119389058-1

CAS Number

119389-05-8

Product Name

4-Phenylethynylphthalic Anhydride

Structure

Category

Dendrimer Building Blocks; Polymers

IUPAC Name

5-(2-phenylethynyl)-2-benzofuran-1,3-dione

Molecular Weight

248.23g/mol

Molecular Formula

C16H8O3

Canonical SMILES

C1=CC=C(C=C1)C#CC2=CC3=C(C=C2)C(=O)OC3=O

InChI

InChI=1S/C16H8O3/c17-15-13-9-8-12(10-14(13)16(18)19-15)7-6-11-4-2-1-3-5-11/h1-5,8-10H

InChI Key

UPGRRPUXXWPEMV-UHFFFAOYSA-N

Application

4-Phenylethynylphthalic Anhydride (PEPA) serves as an essential research chemical known for its application in polymer chemistry. It acts as a reactive capping agent, particularly in the synthesis of polyimides and aromatic oligo-polyimides, enhancing their performance. When used in its fluorinated form, these oligoimides with phenylethynyl end groups melt within the temperature range of 250-350 °C, forming a low viscosity liquid. As the molecular weight of these oligoimides increases, so does their melt viscosity. Upon thermal curing at 371 °C, the resulting thermoset polyimide resins exhibit excellent thermal and mechanical properties, including a high glass transition temperature of 300 °C, substantial flexural strength of 135.5 MPa, a flexural modulus of 3.1 GPa, and a tensile strength of 65.7 MPa, along with an elongation at break of 3.9%.

Complexity

447

Covalently-Bonded Unit Count

Exact Mass

248.047344g/mol

Formal Charge

Heavy Atom Count

Monoisotopic Mass

248.047344g/mol

Rotatable Bond Count

XLogP3

3.3