title: Gas-induced solid state transformation of an organic lattice: from nonporous to nanoporous.
abstract: A well-known organic host, tris-o-phenylenedioxycyclotriphosphazene, exists in two polymorphic guest-free forms: the thermodynamic nonporous high-density phase and the kinetic nanoporous low-density phase. Simple pressurization of the high density phase with CO(2) brings a solid-state transformation to the low density phase, resulting in significant expansion of the crystal volume by 23%.
authors.affiliation: Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA 99352, USA.
authors.forename: Jian
authors.initials: J
authors.lastname: Tian
authors.forename: Praveen
authors.initials: P
authors.lastname: Thallapally
authors.forename: Jun
authors.initials: J
authors.lastname: Liu
authors.forename: Gregory J
authors.initials: GJ
authors.lastname: Exarhos
authors.forename: Jerry L
authors.initials: JL
authors.lastname: Atwood
mesh_terms: D002245:Carbon Dioxide / Q000737:chemistry*; D003460:Crystallization; D006571:Heterocyclic Compounds / Q000737:chemistry*; D007700:Kinetics; D049329:Nanostructures / Q000737:chemistry*; D009943:Organophosphorus Compounds / Q000737:chemistry*; D016062:Porosity; D013816:Thermodynamics
chemical_list: D006571:Heterocyclic Compounds; D009943:Organophosphorus Compounds; C528765:tris(o-phenylenedioxy)cyclotriphosphazene; D002245:Carbon Dioxide