title: Sensitizer design for efficient triplet-triplet annihilation upconversion: annihilator-appended tris-cyclometalated Ir(III) complexes.
abstract: Enhanced triplet-triplet annihilation upconversion efficiency is achieved with two tris-cyclometalated iridium sensitizers covalently tethered with a pyrene annihilator. The improved sensitizing ability and very long phosphorescence lifetimes (1-2 ms) of these bichromophore molecules are both attributed to the intramolecular energy transfer between the iridium complex and appended pyrene group.
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), Center for Soft Matter Science and Engineering, Key Lab of Polymer Chemistry & Physics of the Ministry of Education, College of Chemistry, Peking University, Beijing, 100871, China. ygma@pku.edu.cn dhzhao@pku.edu.cn.
authors.forename: Jiang
authors.initials: J
authors.lastname: Peng
authors.forename: Xinpeng
authors.initials: X
authors.lastname: Jiang
authors.forename: Xinyan
authors.initials: X
authors.lastname: Guo
authors.forename: Dahui
authors.initials: D
authors.lastname: Zhao
authors.forename: Yuguo
authors.initials: Y
authors.lastname: Ma