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Intense chirality induction in nitrile solvents by a helquat dye monitored by near resonance Raman scattering
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SYSNO ASEP 0461208 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Intense chirality induction in nitrile solvents by a helquat dye monitored by near resonance Raman scattering Author(s) Šebestík, Jaroslav (UOCHB-X) RID, ORCID
Teplý, Filip (UOCHB-X) RID, ORCID
Císařová, I. (CZ)
Vávra, Jan (UOCHB-X) RID
Koval, Dušan (UOCHB-X) RID, ORCID
Bouř, Petr (UOCHB-X) RID, ORCIDSource Title Chemical Communications. - : Royal Society of Chemistry - ISSN 1359-7345
Roč. 52, č. 37 (2016), s. 6257-6260Number of pages 4 s. Language eng - English Country GB - United Kingdom Keywords optical activity ; circular dichroism ; vibrational spectra Subject RIV CC - Organic Chemistry R&D Projects GA14-00431S GA ČR - Czech Science Foundation (CSF) GA13-19213S GA ČR - Czech Science Foundation (CSF) GA13-32974S GA ČR - Czech Science Foundation (CSF) GA15-09072S GA ČR - Czech Science Foundation (CSF) GA16-05935S GA ČR - Czech Science Foundation (CSF) Institutional support UOCHB-X - RVO:61388963 UT WOS 000375620400010 EID SCOPUS 84968719030 DOI 10.1039/c6cc01606e Annotation Chirality induction phenomena attract attention because of their relevance to intermolecular interactions encountered in living matter. Usually, such effects are weak. However, enantiomers of a [6]helquat dye were found to induce exceptionally strong chirality in several achiral solvents containing nitrile groups. This effect was observable as an intense Raman optical activity (ROA) induced in acetonitrile, acetonitrile-d(3), and liquid hydrogen cyanide solvents. The observation was verified by measurement of both helquat enantiomers which provided mirror image ROA spectra. Theoretical analysis indicated that the 532 nm laser excitation light was in a near resonance with electronic transitions of the dye, which made the effect observable in very dilute solutions (1 : 200000 helquat to nitrile ratio) and thus the phenomenon can be generally useful in analytical chemistry. Workplace Institute of Organic Chemistry and Biochemistry Contact asep@uochb.cas.cz ; Kateřina Šperková, Tel.: 232 002 584 ; Jana Procházková, Tel.: 220 183 418 Year of Publishing 2017 Electronic address http://pubs.rsc.org/en/content/articlehtml/2016/cc/c6cc01606e
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