Guest@MOF materials have potential in next-generation materials for electroconductive devices. Micro-spectroscopy studies of TCNQ@HKUST-1 electroconductive composites revealed the effects of spatial distribution and water vapor on this material.

The attachment of colloidal iron-oxide nanoparticles (designated Fe-NPs) to pristine and surface-oxidized carbon nanotubes (CNTsa nd CNT-Ox, respectively) was investigated. The loadings of Fe-NPs (size 7nm) on the CNT and CNT-Ox supports amounted to 3.4 and 2.3 wt. %, respectively;t he difference was attributedt ow eaker van der Waals interactions between the colloidal Fe-NPs and the surface of CNT-Ox. Fischer-Tropsch to olefins (FTO) synthesis was performedt oi nvestigatet he impact of support functionalization on catalyst performance. Weak interactions between the Fe-NPs and the CNT-Ox support facilitated particle growth and led to substantial deactivation of the Fe/CNT-Ox catalysts. The addition of promoters (Na + S) to Fe/CNT resulted in remarkable activity,s electivity to lower olefins, and stability,m aking colloidal iron nanoparticles on pristine CNTsasuitable catalystfor FTOs ynthesis.

Correction for ‘Micro-spectroscopy of HKUST-1 metal–organic framework crystals loaded with tetracyanoquinodimethane: effects of water on host–guest chemistry and electrical conductivity’ by Miguel Rivera-Torrente et al., Phys. Chem. Chem. Phys., 2019, 21, 25678–25689.