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Product Code B1951-100g
Price £100 ex. VAT

A dianiline-phenyl ether building block

As an intermediate for the preparation of polyimide in application of nanofiltration membranes, COFs, flexible heat-resisting substrates, nanofiltration membranes and polymer dielectrics


Specifications | MSDS | Literature and Reviews


1,4-Bis(4-aminophenoxy)benzene (TPE-Q), CAS number 3491-12-1, is a diamino-building block with a phenyl ether core. 1,4-Bis(4-aminophenoxy)benzene is commonly used as a monomer for synthesizing polyimides with carboxylic acid dianhydrides. These polyimides are known for withstanding high temperatures. For instance, it is used as an ultra-thin flexible substrate for annealing MoS2 up to 500°C and the integrated devices are applied for biopotential sensors. 1,4-Bis(4-aminophenoxy)benzene has a phenyl ether moiety (3 benzene rings linked by 2 oxygens in para-position), an electron donating group which is desired for designing intra-/intermolecular charge transfer complexes.

TPE-Q is synthesised for dielectrics which present Weibull breakdown strength of 440-540 MV/m and dielectric permittivity of 3.52-3.85. The polyimides made from TPE-Q, along with boron nitrite form high thermal conductive composite materials (2.75 W/m⋅K).

General Information


CAS Number 3491-12-1
Chemical Formula C18H16N2O2
Full Name 1,4-Bis(4-aminophenoxy)benzene
Molecular Weight 292.34 g/mol
Synonyms 4-[4-(4-aminophenoxy)phenoxy]aniline
1,4-Phenylene-di-4-aminophenyl ether
Bisaminophenoxybenzene
Classification / Family Diamines building blocks, Phenyl ether derivatives, Heat-resisting polyimides, Dielectrics

Chemical Structure


1,4-Bis(4-aminophenoxy)benzene(TPE-Q) chemical structure, CAS 3491-12-1
1,4-Bis(4-aminophenoxy)benzene(TPE-Q) chemical structure, CAS 3491-12-1

Product Details


Purity >99%
Melting Point Tm = 173 °C
Appearance Pale brown powder

MSDS Documentation


1,4-Bis(4-aminophenoxy)benzene(TPE-Q)1,4-Bis(4-aminophenoxy)benzene(TPE-Q) MSDS Sheet

Literature and Reviews


  1. A High-permeance organic solvent nanofiltration membrane via polymerization of ether oxide-based polymeric chains for sustainable dye separation, B. Zhang et al., Sustainability, 15, 3446(2023); DOI: 10.3390/su15043446.
  2. 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.
  3. Integrated exploration of experimentation and molecular simulation in ester-containing polyimide dielectrics, J. Luo et al., RSC Adv., 13, 963-972(2023); DOI: 10.1039/d2ra06376j.
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