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1,3,5-Tris(4-aminophenyl)benzene

CAS Number 118727-34-7

Chemistry Building Blocks, COF Ligands, Materials, Porous Organic Frameworks


Product Code B4511-10g
Price £140 ex. VAT

Covalent Organic Frameworks (COFs) Terphenyl Ligand

A trigonal shaped ligand linker for covalent organic frameworks (COFs) in application of carbon dioxide adsorption, nitroaromatic sensing and gas separation


Specifications | MSDS | Literature and Reviews


1,3,5-tri(4-aminophenyl)benzene (TAPB) has three 4-aminophenyl groups attached to a benzene ring at meta-positions. It is widely used as a tritopic ligand linker for the construction of porous polymeric covalent organic frames (COFs).

Porous polyimide COF PAF-120, derived from 1,3,5-tris(4-aminophenyl)benzene and naphthalene-1,4,5,8-tetracarboxylic dianhydride by condensation reaction to form imide linkers, demonstrates great thermal and chemical stability with selective adsorption of C2H2 over C2H4 and CO2 over N2. COF-2, a COF with three components of 2,5-divinylterephthaldehyde, biphenyl dialdehyde and 1,3,5-tris(4-aminophenyl)benzene, shows efficient adsorption of bisphenol S (BPS) and bisphenol A (BPA) due to the hydrogen bonding and π–π interactions.

MOF and COF ligands

MOF and COF ligands

Terphenyl ligand for cross-linked COF networks

Worldwide shipping for 910231-21-9

Worldwide shipping

Quick and reliable shipping

High purity 910231-21-9

High purity

>97% High purity

Facile reactions

Facile reactions

Readily for polycondensation reactions

Similar to the crystalline inorganic materials and outperforming that of the state-of-the-art conductive COFs in its conductivity, organic semiconducting 2D TAPB–TFB COF thin film shows high photoconductivity with a long charge scattering time exceeding 70 fs at room temperature, which corresponds to a record high charge carrier mobility of 165 ± 10 cm2 V–1 s–1.

General Information


CAS Number 118727-34-7
Chemical Formula C24H21N3
Full Name 1,3,5-Tris(4-aminophenyl)benzene
Molecular Weight 351.45  g/mol
Synonyms TAPB, 5'-(4-aminophenyl)-[1,1':3',1''-terphenyl]-4,4''-diamine
Classification / Family Terphenyls, Polyamines COF ligands

Chemical Structure


118727-34-7 - 1,3,5-tris(4-aminophenyl)benzene chemical structure
1,3,5-Tris(4-aminophenyl)benzene (TAPB) Chemical Structure, 118727-34-7

Product Details


Purity > 97%
Melting Point Tm = 263 °C (lit.)
Appearance Paul brown to brown powder/crystals

MSDS Documentation


118727-34-7 - 1,3,5-tris(4-aminophenyl)benzene1,3,5-Tris(4-aminophenyl)benzene MSDS Sheet

Literature and Reviews


  1. Construction of a Stable Crystalline Polyimide Porous Organic Framework for C2H2/C2H4 and CO2/N2 Separation, L. Jiang et al., Chem. Eur. J., 25 (38), 9045-9051 (2019); DOI: 10.1002/chem.201900857.
  2. Efficient removal of bisphenol pollutants on imine-based covalent organic frameworks: adsorption behavior and mechanism, D. Fu et al., RSC Adv., 11, 18308-18320 (2021); DOI: 10.1039/D1RA02342J.
  3. Outstanding Charge Mobility by Band Transport in Two-Dimensional Semiconducting Covalent Organic Frameworks, S. Fu et al., J. Am. Chem. Soc., 144 (16), 7489–7496 (2022); DOI: 10.1021/jacs.2c02408.
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