Sensitizer design for efficient triplet-triplet annihilation upconversion: annihilator-appended tris-cyclometalated Ir(iii) complexesElectronic supplementary information (ESI) available: Synthetic procedures and additional characterization results. See DOI: 10.1039/c4cc01465k

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 attrib...

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Main Authors Peng, Jiang, Jiang, Xinpeng, Guo, Xinyan, Zhao, Dahui, Ma, Yuguo
Format Journal Article
LanguageEnglish
Published 24.06.2014
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Summary: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. Enhanced triplet-triplet annihilation upconversion efficiency is achieved with two tris-cyclometalated iridium sensitizers covalently tethered with a pyrene annihilator.
Bibliography:10.1039/c4cc01465k
Electronic supplementary information (ESI) available: Synthetic procedures and additional characterization results. See DOI
ISSN:1359-7345
1364-548X
DOI:10.1039/c4cc01465k