Metal-organic framework materials comprising a diimine scaffold and methods for production thereof

US12227526B2 · kind B2 · utility

Assignee

• Exxon Mobil Technology and Engineering Company · US

Inventors

• Joseph M. Falkowski · Hampton, US
• Carter W. Abney · Califon, US
• Mary S. Abdulkarim · Rockleigh, US
• Aaron Sattler · Annandale, US
• Michele L. Paccagnini · Youngstown, US
• Simon C. Weston · Annandale, US

Key dates

• Filing date: Mar 30, 2020
• Grant date: Feb 18, 2025
• Expiry date: Oct 30, 2041

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02C20/40
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Metal-organic framework materials (MOFs) are highly porous entities comprising a multidentate organic ligand coordinated to multiple metal centers, typically as a coordination polymer. Crystallization may be problematic in some instances when secondary binding sites are present in the multidentate organic ligand. Multidentate organic ligands comprising first and second binding sites bridged together with a third binding site comprising a diimine moiety may alleviate these issues, particularly when using a preformed metal cluster as a metal source to form a MOF. Such MOFs may comprise a plurality of metal centers, and a multidentate organic ligand coordinated to the plurality of metal centers to define an at least partially crystalline network structure having a plurality of internal pores, and in which the multidentate organic ligand comprises first and second binding sites bridged together with a third binding site comprising a diimine moiety. Particular MOFs may comprise N,N′-di(1H-pyrazol-4-yl)ethane-1,2-diimine as a multidentate organic ligand.