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[1,1':4',1'':4'',1'''-Quaterphenyl]-4,4'''-diamine

CAS Number 53693-67-7

COF Ligands, Diamines and Dianhydrides, Materials, Monomers, Porous Organic Frameworks


Product Code B4601-1g
Price £65 ex. VAT

Covalent Organic Frameworks (COFs) Quaterphenyl Ligand

A rigid rod-like diamine bridging ligand linker for covalent polymeric frameworks (CPFs) in application of light emitting diodes, adsorption of polyfluoroalkyls (PFAs)


Specifications | MSDS | Literature and Reviews


[1,1':4',1'':4'',1'''-Quaterphenyl]-4,4'''-diamine (QPDA) is a rod-like linear structure with amino groups on both ends, a match with two striking ends. [1,1':4',1'':4'',1'''-quaterphenyl]-4,4'''-diamine is commonly used as a precursor for constructing hole extraction layer or covalent organic frameworks (COFs).

4P-NPD, derived from [1,1':4',1'':4'',1'''-quaterphenyl]-4,4'''-diamine, has been successfully used as blue emission layer, efficient excitation blocking, hole extraction layer material in OLED, perovskite, and organic solar cells. By harvesting triplet excitons from the fluorescent blue emitter 4P-NPD, white OLED based on Ir(MDQ)2(acac):4P-NPD as the emissive layer demonstrates strongly reduced roll-off efficiency with an external power efficiency (EQE) of 24.1%,  and a power efficiency of 49.3 lm W-1 at a luminance of 1000 cd m-2.

Covalent organic frameworks based on [1,1':4',1'':4'',1'''-quaterphenyl]-4,4'''-diamine as the rod-like linker has larger pore sizes for highly effective adsorption and removal of per- and polyfluoroalkyl substances (PFAS) from water.

MOF and COF ligands

MOF and COF ligands

Diamine 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 reaction to form imines and amides

General Information


CAS Number 53693-67-7
Chemical Formula C24H20N2
Full Name [1,1':4',1'':4'',1'''-Quaterphenyl]-4,4'''-diamine
Molecular Weight 440.82 g/mol
Synonyms QPDA, 4-[4-[4-(4-Aminophenyl)phenyl]phenyl]aniline, p,p'-Diaminoquaterphenyl
Classification / Family Quaterphenyls, Amines, COF ligands

Chemical Structure


53693-67-7 - [1,1':4',1'':4'',1'''-quaterphenyl]-4,4'''-diamine chemical structure
[1,1':4',1'':4'',1'''-Quaterphenyl]-4,4'''-diamine (QPDA) Chemical Structure, 53693-67-7

Product Details


Purity > 97%
Melting Point 312–315 °C (lit)
Appearance Pale brown to brown powder/crystals

MSDS Documentation


53693-67-7 - [1,1':4',1'':4'',1'''-quaterphenyl]-4,4'''-diamine[1,1':4',1'':4'',1'''-Quaterphenyl]-4,4'''-diamine MSDS Sheet

Literature and Reviews


  1. Quaterphenyl. Part I. Some dihydroxy-derivatives, J. Harley-Mason et al., J. Chem. Soc., 1379-1385 (1940); DOI: 10.1039/JR9400001379.
  2. Synthesis and mutagenic properties of 4,4'-diamino-p-terphenyl and 4,4'-diamino-p-quaterphenyl, J. Wang et al., Color. Technol., 123, 34–38 (2007); DOI: 10.1111/j.1478-4408.2006.00058.x.
  3. Removal of typical PFAS from water by covalent organic frameworks with different pore sizes, W. Wang et al., J. Hazard. Mater., 460, 132522 (2023); DOI: 10.1016/j.jhazmat.2023.132522.
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