Ruthenium(II) Polyimine-Coumarin Dyad with Non-emissive (IL)-I-3 Excited State as Sensitizer for Triplet-Triplet Annihilation Based Upconversion
Release Time:2019-03-09 Hits:
Indexed by: Journal Article
Date of Publication: 2011-08-29
Journal: ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Included Journals: EI、SCIE、Scopus、PubMed
Volume: 50
Issue: 36
Page Number: 8283-8286
ISSN: 1433-7851
Key Words: coumarin; electronic structure; photochemistry; ruthenium; upconversion
Abstract: Light out of darkness? Most sensitizers for triplet-triplet annihilation (TTA) upconversion are strongly phosphorescent. A new RuII-coumarin dyad, on the other hand, has a non-emissive 3IL excited state (φP=0.2%) but shows a good upconversion quantum yield (φUC=2.7%, see picture, TTET=triplet-triplet energy transfer). © 2011 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
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