2,2-Bis[4-(4-aminophenoxy)phenyl]hexafluoropropane (4-BDAF)

CAS Number 69563-88-8

Chemistry Building Blocks, COF Ligands, Diamines and Dianhydrides, Fluorinated Building Blocks, Materials, Monomers, Porous Organic Frameworks

MSDS

2,2-Bis[4-(4-aminophenoxy)phenyl]hexafluoropropane (4-BDAF) CAS 69563-88-8

A fluorinated diamine building block

Used as the intermediate for polyimides preparation in application of solar cells, telecommunication, and capacitors

Specifications | MSDS | Literature and Reviews

2,2-Bis[4-(4-aminophenoxy)phenyl]hexafluoropropane (4-BDAF), CAS number 69563-88-8, has two phenoxyanilines connected by a hexafluoroisopropane. 2,2-Bis[4-(4-aminophenoxy)phenyl]hexafluoropropane is commonly used for the synthesis of polyimides. The steric effect from the trifluoromethyl substituents reduces the intermolecular interaction and their electron withdrawing effect to minimise the electron delocalization of the benzene rings. These properties lead to low dielectric constant (1.51–2.42 at 100 kHz) and low dielectric loss (0.00698), making the polyimides promising materials for telecommunication applications. The high optical transparency of these polyimides is exploited for the substrates in solar cells achieving 16.1% powder conversion efficiency.

The polyetherimides derived from 4-BDAF are also used in capacitive energy storage application with discharge density at 3.6 J/cm³ and charge-discharge efficiency at 96.5%.

Multiple functional groups

For facile synthesis

Fluorinated diamine building block

For polyimides, COFs, and solar cells

Worldwide shipping

Quick and reliable shipping

High purity

>99% High purity

General Information

CAS Number	69563-88-8
Chemical Formula	C₂₇H₂₀F₆N₂O₂
Full Name	2,2-Bis[4-(4-aminophenoxy)phenyl]hexafluoropropane
Molecular Weight	518.345 g/mol
Synonyms	4,4′-(Hexafluoroisopropylidene)bis(p-phenyleneoxy)dianiline, 4′,4′′′-(Hexafluoroisopropylidene)bis(4-phenoxyaniline)
Classification / Family	Diamine building block, Fluorinated building block, Solar cells, Telecommunications, Capacitors

Chemical Structure

Product Details

Purity	>99%
Melting Point	T_m = 159 °C – 163 °C
Appearance	White to pale yellow to light brown powder/crystal

MSDS Documentation

2,2-Bis[4-(4-aminophenoxy)phenyl]hexafluoropropane (4-BDAF) MSDS Sheet

Literature and Reviews

Biomimetic electrodes for flexible organic solar cells with efficiencies over 16%, T.-Y. Qu et al., Adv. Optical Mater., 8, 2000669(2020); DOI: 10.1002/adom.202000669.
Construction of all-organic low dielectric polyimide hybrids via synergistic effect between covalent organic framework and cross-linking structure, W. Zhao et al., Nano Material Science, 2023, DOI: 10.1016/j.nanoms.2023.02.002.
Dielectric polymers for high-temperature capacitive energy storage, H. Li et al., Chem. Soc. Rev., 50, 6369-6400(2021); DOI: 10.1039/D0CS00765J.

Polyimide layers with high refractivity and surface wettability adapted for lowering optical losses in solar cells, A. Barzic et al., Polymers, 14, 4049(2021); DOI: 10.3390/polym14194049.
Reducing the permittivity of polyimides for better use in communication devices, Y. Chem et al., Polymers, 15, 1256(2023); DOI: 10.3390/polym15051256.
Sustainable dielectric films with ultralow permittivity from soluble fluorinated polyimide, H. Li et al., Molecules, 28, 3095(2023); DOI: 10.3390/molecules28073095.