期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 55, 期 28, 页码 8062-8066出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201601633
关键词
circular dichroism; helicenes; iron; optical rotation; Raman optical activity
资金
- ANR [12-BS07-0004-METALHEL-01]
- French Ministry of Research
- CNRS (DIL CARIM)
- EU
- Ministry of Science and Higher Education in Poland
- NSF [CHE-1265833]
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1265833] Funding Source: National Science Foundation
The combination of a bis-alkynyl-helicene moiety with two iron centers leads to novel electroactive species displaying unprecedented redox-triggered chiroptical switching. Upon oxidation, strong changes of vibrational modes (either local or extended coupled modes) are detected by vibrational circular dichroism and Raman optical activity. Remarkably, the sign of the optical rotation at 1.54 mm (that is, at wavelengths typically used for telecommunications) changes upon oxidation while the topology and stereochemistry of the helicene remain unchanged.
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