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Product Code B2051-25g
Price $95 ex. VAT

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A biphenyl ether diamine building block

As the intermediate for the preparation of polyimides in application of biomaterials, fuel cells, COFs and aerogels


4,4'-Bis(4-aminophenoxy)biphenyl (BAPB) is a biphenyl derivative capped with two aminophenoxy groups at para-positions. 4,4'-Bis(4-aminophenoxy)biphenyl has a rigid biphenyl core and flexible phenyl ether bridges, thus the acquired polyimide aerogels (with density of 0.089 g/cm3) have fully bendable flexibility and high compression (E = 1.9 MPa). Showing excellent biocompatibility with human dermal fibroblasts and osteosarcoma cells, these polyimides are promising to use as coatings for biomedical devices and filaments for 3D printed implants.

With two amines, BAPB can be crosslinked with aldehydes to form covalent organic frameworks for sensing nitro-substituted aromatic compounds via photo-induced charge transfer mechanism.

General Information

CAS Number 13080-85-8
Chemical Formula C24H20N2O2
Full Name 4,4'-Bis(4-aminophenoxy)biphenyl
Molecular Weight 368.44 g/mol
Synonyms 4,4′-(1,1′-Biphenyl-4,4′-diyldioxy)dianiline
Classification / Family Diamine building block, Polyimides, Fuel cells, COFs, Aerogels, Biomaterials

Chemical Structure

4,4'-Bis(4-aminophenoxy)biphenyl (BAPB) chemical structure, CAS 13080-85-8.
4,4'-Bis(4-aminophenoxy)biphenyl (BAPB) chemical structure, CAS 13080-85-8

Product Details

Purity >99%
Melting Point Tm = 197 °C – 200 °C
Appearance White to pale reddish grey powder/crystal

MSDS Documentation

4,4'-Bis(4-aminophenoxy)biphenyl (BAPB)4,4'-Bis(4-aminophenoxy)biphenyl (BAPB) MSDS Sheet

Literature and Reviews

  1. Activation of R-BAPB polyimide with cold plasma dielectric barrier discharge for improvement of cell-material interaction, A. Kamalov et al., J. Appl. Polym. Sci., 139(42), e53024(2022); DOI: 10.1002/app.53024.
  2. Biocompatible electroconductive matrices for tissue engineering: a comparative study, M. Shishov et al., Biointerface Res. Appl. Chem., 13(1), 96(2023); DOI: 10.33263/BRIAC131.096.
  3. Development and processing of new composite materials based on high-performance semicrystalline polyimide for fused filament fabrication (FFF) and their biocompatibility, I. Plyakov et al., Polymers, 14, 3803(2022); DOI: 10.3390/polym14183803.
  4. Fully flexible covalent organic frameworks for fluorescence sensing 2,4,6-trinitrophenol and p-nitrophenol, H. Zhu et al., Polymers, 15, 653(2023); DOI: 10.3390/polym15030653.
  5. Influence of electric field on proliferation activity of human dermal fibroblasts, A. Kamakov et al, J. Funct. Biomater., 13, 89(2022); DOI: 10.3390/jfb13030089.
  6. Novel, flexible, and transparent thin film polyimide aerogels with enhanced thermal insulation and high service temperature, O. Aghababaei et al., J. Mater. Chem. C, 10, 5088-5108(2022); DOI: 10.1039/D1TC06122D.

To the best of our knowledge the information provided here is accurate. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only.

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