Ossila 3,3'-Dihydroxy-[1,1'-biphenyl]-4,4'-dicarbaldehyde B3601

3,3'-Dihydroxy-[1,1'-biphenyl]-4,4'-dicarbaldehyde (CAS 14969-32-5), also known as DHBD or BDP, is a biphenyl building block for covalent organic frameworks (COFs). Its structure consists of two salicylaldehyde units joined at the 4,4'-positions, giving the molecule both aldehyde and hydroxy groups that support cross-linked frameworks and later post-functionalization.

The ligand is typically condensed with amine derivatives to form Schiff base COFs. When ethylenediamine is used as the partner, the product is a salen-COF, in which salicylaldehyde-ethylenediamine linkages create tetradentate pockets able to bind metal centres. These metal-COF complexes are studied as porous materials and electrocatalysts.

In one reported example, a bimetallic two-dimensional COF built from this dialdehyde and a porphyrin was tested for the electrocatalytic oxygen evolution reaction, reaching a turnover frequency of up to 26.19 s−1 at an overpotential of 500 mV. Ossila supplies the compound as a light brown powder with >98% purity.

• Synthesis of Schiff base COFs by condensation with amine derivatives.
• Preparation of salen-COFs using ethylenediamine as the linking amine.
• Construction of metal-COF complexes through the tetradentate salen coordination sites.
• Development of COF-based electrocatalysts for the oxygen evolution reaction.
• Research on porous organic materials, including CMPs and luminescent frameworks.

• Product code: B3601
• Full Name: 3,3'-Dihydroxy-4,4'-biphenyldicarbaldehyde
• M​olecular Weight: 242.23 g/mol
• Synonyms: 3,3'-Dihydroxy-[1,1'-biphenyl]-4,4'-dicarboxaldehyde, DHBD, BDP, 3,3'-Dihydroxybiphenyl-4,4'-dicarbaldehyde
• Classification / Family: COFs, Metal-COF complexes, CMPs, Salen COFs, Schiff base COFs, Electrocatalysts

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