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Product Code B1951-25g
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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


1,4-Bis(4-aminophenoxy)benzene (TPE-Q) 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.
  4. Large-scale ultra-robust MoS2 patterns directly synthesized on polymer substrate for flexible sensing electronics, W. Li et al., Adv. Mater., 35, 2207447(2023); DOI: 10.1002/adma.202207447.
  5. Research progress and application of polyimide-based nanocomposites, J. Ma et al., Nanomaterials, 13, 656(2023); DOI: 10.3390/nano13040656.
  6. Synthetic protocols and significance of heterocyclic fluorescent-reinforcing polymers: a comprehensive review, J. Modh, J. Adv. Sci. Res., 14(2), 9-39(2023); DOI: 10.55218/JASR.202314202.
  7. Thermal conductivity for polymer composite materials: recent advances in polyimide materials, M. Haruki, J. Chem. Eng. Jpn., 54(5), 186-194(2021), DOI: 10.55218/JASR.202314202.

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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