title: Effect of gas pressure on negative thermal expansion in MOF-5.
abstract: Powder diffraction is used to study thermal expansion properties of MOF-5 at moderate helium gas pressures: 1.7 bar (100-500 K) and 5-150 bar (150-300 K). The framework shows negative thermal expansion (NTE) at all pressures, but vibrational motions causing NTE are damped with increasing pressures, leading to decreased NTE.
authors.affiliation: Dept of Chemistry and iNANO, Aarhus University, Denmark.
authors.forename: Nina
authors.initials: N
authors.lastname: Lock
authors.forename: Mogens
authors.initials: M
authors.lastname: Christensen
authors.forename: Cameron J
authors.initials: CJ
authors.lastname: Kepert
authors.forename: Bo B
authors.initials: BB
authors.lastname: Iversen