Ossila 4',4''',4'''''-Nitrilotris([1,1'-biphenyl]-4-carbaldehyde) B3801

4',4''',4'''''-Nitrilotris([1,1'-biphenyl]-4-carbaldehyde), known as NTBCA (CAS 872689-79-7), is a three-armed aldehyde building block for covalent organic framework (COF) synthesis. Its electron-rich triarylamine centre carries three biphenyl arms, each ending in a formyl group that reacts with amines to create imine bonds within the framework.

Researchers have paired NTBCA with hexaamino-hexaazatriphenylene nodes to make HAT-NTBCA-COF, a thermally stable material that took up 6.0 wt% CO2 at 273 K and 3.7 wt% at 298 K. In a [3 + 4] condensation with 4,4′,4″,4′″-(ethene-1,1,2,2-tetrayl)tetraaniline, it forms COF-1, a thermally and chemically robust framework that acted as a visible-light photocatalyst for cross-dehydrogenative coupling and, together with a MacMillan imidazolidinone, for asymmetric α-alkylation of aldehydes.

Ossila supplies this ligand at >98% purity as a yellow to orange powder or crystals, in 500 mg, 1 g and 5 g packs.

• Synthesis of imine-linked covalent organic frameworks through condensation with amine monomers.
• Development of COF materials for carbon dioxide adsorption.
• Preparation of framework photocatalysts for visible-light organic reactions.
• Research into nitrogen-rich COFs as sensory materials.

• Product code: B3801
• M​olecular Weight: 557.64 g/mol
• Synonyms: NTCBA, [1,1-Biphenyl]-4-carboxaldehyde,4-[bis(4-formyl[1,1-biphenyl]-4-yl)amino]-
• Classification / Family: Triarylamine, COF ligands

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