title: Gas sorption and luminescence properties of a terbium(III)-phosphine oxide coordination material with two-dimensional pore topology.
abstract: The structure, stability, gas sorption properties and luminescence behaviour of a new lanthanide-phosphine oxide coordination material are reported. The polymer PCM-15 is based on Tb(III) and tris(p-carboxylated) triphenylphosphine oxide and has a 5,5-connected net topology. It exhibits an infinite three-dimensional structure that incorporates an open, two-dimensional pore structure. The material is thermally robust and remains crystalline under high vacuum at 150 °C. When desolvated, the solid has a CO(2) BET surface area of 1187 m(2) g(-1) and shows the highest reported uptake of both O(2) and H(2) at 77 K and 1 bar for a lanthanide-based coordination polymer. Isolated Tb(III) centres in the as-synthesized polymer exhibit moderate photoluminescence. However, upon removal of coordinated OH(2) ligands, the luminescence intensity was found to approximately double; this process was reversible. Thus, the Tb(III) centre was used as a probe to detect directly the desolvation and resolvation of the polymer.
authors.affiliation: Department of Chemistry and Biochemistry, The University of Texas at Austin, 1 University Station A5300, Austin, TX 78712-0165, USA.
authors.forename: Ilich A
authors.initials: IA
authors.lastname: Ibarra
authors.forename: Travis W
authors.initials: TW
authors.lastname: Hesterberg
authors.forename: Bradley J
authors.initials: BJ
authors.lastname: Holliday
authors.forename: Vincent M
authors.initials: VM
authors.lastname: Lynch
authors.forename: Simon M
authors.initials: SM
authors.lastname: Humphrey