Covalent Organic Frameworks (COFs) Biphenyl Ligand

A linear linker for COFs in applications of effective chromium adsorption and carbon dioxide reduction

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[1,1'-Biphenyl]-3,3',5,5'-tetracarbaldehyde (TABP), CAS number 150443-85-9, is consisted of a biphenyl linker with four carbaldehyde groups at 3,3',5,5'-positions of the biphenyl structure.

Derived from [1,1'-biphenyl]-3,3',5,5'-tetracarbaldehyde and bearing hydroxyl groups, dual-pore COF-BTA-DHBZ showed a fast removing process of chromium (VI) with a maximum adsorption capacity up to 384 mg g⁻¹. Study revealed that the hydroxyl groups on the backbone of the COF played a critical role for the capture of Cr (VI).

A donor-acceptor (D–A) structure of Co-COF-BT, comprising (1,1′-biphenyl)-3,3′,5,5′-tetracarbaldehyde and 4,4′-(2,1,3-benzothiadiazole-4,7-diyl)bis[benzenamine], possesses excellent photocatalytic CO₂ reduction activity with a CO yield of 2423 μmol g⁻¹h⁻¹ and selectivity >99% under visible light. It is believed that the introduction of Co² to the COF pores provides additional active sites. It is the Co-S bond in Co-COF-BT that generates an additional channel for ultrafast electron migration from the COF-BT unit to the Co² active centre to increase charge mobility and reduce the energy barrier.

General Information

Chemical Structure

Product Details

MSDS Documentation

Literature and Reviews

1. Cheap transition metal reinforced donor–acceptor covalent organic frameworks for CO2 photoreduction, L. Ai et al, Chem. Eng. J., 475, 146106 (2023); DOI: /10.1016/j.cej.2023.146106.
   
2. Efficient Removal of Cr(VI) from Aqueous Solutions by a Dual-Pore Covalent Organic Framework, F. Cui et al., Adv. Sustainable Syst., 3 (4), 1800150 (2019); DOI: 10.1002/adsu.201800150.
   
3. 2D Covalent Organic Frameworks with Kagome Lattice: Synthesis and Applications, J. Tu et al., Chem, Eur. J., e202302380 (2023); DOI: 10.1002/chem.202302380.