Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 56, Issue 28, Pages 8236-8239Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201704263
Keywords
N-heterocyclic carbenes; chiroptical properties; helicenes; iridium; phosphorescence
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Funding
- ANR [12-BS07-0004-METALHEL-01]
- Chirafun CNRS network
- NSF [CHE-1560881]
- Ministry of Science and Higher Education in Poland
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1560881] Funding Source: National Science Foundation
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A fused pi-helical N-heterocyclic carbene (NHC) system was prepared and examined through its diastereoisomerically pure cycloiridiated complexes. The latter display light-green phosphorescence with unusually long lifetimes and circular polarization that depends on both the helical NHC P/M stereochemistry and the iridium Delta/Delta stereochemistry. These unprecedented features are attributed to extended pi conjugation within the helical carbenic ligand and efficient helicene-NHC-Ir interaction.
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