Translocation and confinement of tetraamines in adaptable microporous cavities

In this study, we propose an alternative mechanism that does not rely on the use of neutral metal vacancies as binding sites but is enabled by the structural adaptability of heterobimetallic Ti2Ca2 clusters. The combination of hard (Ti+4) and soft (Ca2+) metal centers in the inorganic nodes of the framework enables MUV-10 to adapt its pore windows to the presence of triethylenetetramine molecules. This dynamic cluster response facilitates the translocation and binding of tetraamine inside the microporous cavities to enable the formation of bis-coordinate adducts that are stable in water. The extension of this grafting concept from MUV-10 to larger cavities not restrictive to CO2 diffusion will complement other strategies available for the design of molecular sorbents for decarbonization applications.PMID:38644341 | DOI:10.1002/anie.202402973

Source: Angewandte Chemie - April 21, 2024 Category: Chemistry Authors: Ana Rubio-Gaspar Alechania Misturini Reisel Mill án Neyvis Almora-Barrios Sergio Tatay Volodymyr Bon Mickaele Bonneau Vincent Guillerm Mohamed Eddaoudi Sergio Naval ón Stefan Kaskel Donatella Armentano Carlos Marti-Gastaldo Source Type: research