Solid-state ¹³C-NMR spectroscopic determination of side-chain mobilities in zirconium-based metal-organic frameworks.

ABSTRACT: Porous interpenetrated zirconium-organic frameworks (PIZOFs) are a class of Zr-based metal-organic frameworks (MOFs) which are composed of long, rod-like dicarboxylate linkers and Zr6O4(OH)4(O2C)12 nodes. Long oligoethylene glycol or aliphatic side chains are covalently attached to the linker molecules in the cases of PIZOF-10 and PIZOF-11, respectively. These side chains are supposedly highly mobile, thus mimicking a solvent environment. It is anticipated that such MOFs could be used as a solid catalyst - the MOF - with pore systems showing properties similar to a liquid reaction medium. To quantify the side-chain mobility, here we have applied different 1D and 2D NMR solid-state spectroscopic techniques like cross-polarization (CP) and dipolar-coupling chemical-shift correlation (DIPSHIF

SUBMITTER: Hempel G 

PROVIDER: S-EPMC12082566 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature