title: Temperature Dependence of Triplet-Triplet Annihilation Upconversion in Phospholipid Membranes.
abstract: Understanding the temperature dependency of triplet-triplet annihilation upconversion (TTA-UC) is important for optimizing biological applications of upconversion. Here the temperature dependency of red-to-blue TTA-UC is reported in a variety of neutral PEGylated phospholipid liposomes. In these systems a delicate balance between lateral diffusion rate of the dyes, annihilator aggregation, and sensitizer self-quenching leads to a volcano plot, with the maximum upconversion intensity occurring near the main order-disorder transition temperature of the lipid membrane.
authors.affiliation: Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University , P.O. Box 9502, 2300 RA Leiden, The Netherlands.
authors.forename: Sven H C
authors.initials: SH
authors.lastname: Askes
authors.affiliation: Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University , P.O. Box 9502, 2300 RA Leiden, The Netherlands.
authors.forename: Philip
authors.initials: P
authors.lastname: Brodie
authors.affiliation: Engineering of Molecular NanoSystems, Université Libre de Bruxelles , 50 av. F.D. Roosevelt, 1050 Brussels, Belgium.
authors.forename: Gilles
authors.initials: G
authors.lastname: Bruylants
authors.affiliation: Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University , P.O. Box 9502, 2300 RA Leiden, The Netherlands.
authors.forename: Sylvestre
authors.identifier: 0000-0002-5810-3657
authors.initials: S
authors.lastname: Bonnet
mesh_terms: D004396:Coloring Agents / Q000737:chemistry; D004058:Diffusion; D008081:Liposomes / Q000737:chemistry; D010743:Phospholipids / Q000737:chemistry*; D013696:Temperature
chemical_list: D004396:Coloring Agents; D008081:Liposomes; D010743:Phospholipids