title: Crystal engineering of nonporous organic solids for methane sorption.
abstract: The low density polymorph of the well-known host p-tert-butylcalix[4]arene absorbs more methane than p-tert-pentylcalix[4]arene at room temperature and 1 atm pressure, but the order of absorption is reversed at 38 atm with p-tert-pentylcalix[4]arene absorbing more.
authors.affiliation: Department of Chemistry, University of Missouri-Columbia, Columbia, MO 65211, USA.
authors.forename: Praveen K
authors.initials: PK
authors.lastname: Thallapally
authors.forename: Trevor B
authors.initials: TB
authors.lastname: Wirsig
authors.forename: Leonard J
authors.initials: LJ
authors.lastname: Barbour
authors.forename: Jerry L
authors.initials: JL
authors.lastname: Atwood