Structure and redox tuning of gas adsorption properties in calixarene-supported Fe(ii)-based porous cages.

ABSTRACT: We describe the synthesis of Fe(ii)-based octahedral coordination cages supported by calixarene capping ligands. The most porous of these molecular cages has an argon accessible BET surface area of 898 m² g^-1 (1497 m² g^-1 Langmuir). The modular synthesis of molecular cages allows for straightforward substitution of both the bridging carboxylic acid ligands and the calixarene caps to tune material properties. In this context, the adsorption enthalpies of C₂/C₃ hydrocarbons ranged from -24 to -46 kJ mol^-1 at low coverage, where facile structural modifications substantially influence hydrocarbon uptakes. These materials exhibit remarkable stability toward oxidation or decomposition in the presence of air and moisture

SUBMITTER: Deegan MM 

PROVIDER: S-EPMC8159286 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature