Journal
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume 9, Issue 9, Pages 2266-2270Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.8b00519
Keywords
-
Categories
Funding
- Ministerio de Ciencia e Innovacion [CTQ2014-61470-EXP, CTQ2015-69391-P]
- Ministerio de Ciencia e Innovacion [FPI]
- Ministerio de Ciencia e Innovacion [FPU]
- Ministerio de Ciencia e Innovacion [Juan de la Cierva postdoctoral Fellowship] [FJCI-2015-23531]
- Xunta de Galicia [GRC2014/040, ED431G/09]
- European Regional Development Fund (ERDF)
- Supercomputing and Bioinnovation Center (SCBI) of the University of Malaga (Spain)
Ask authors/readers for more resources
Several steps of chiral induction have been detected in poly(phenylacetylene)s among their different hierarchical levels of chirality by vibrational circular dichroism, namely, (i) from the stereogenic centers to the innermost polyacetylene helical covalent backbone (helix(int)), (ii) from this to the external helix (helix(ext)) formed by the side phenyl pendants that form a complementary helix or counter-helix, and (iii) from this pendant helix to the helical solvation sphere (helix(solv.)), the last one being observed along this work. The pendant to polyene backbone chiral induction determines the helical structure adopted by the polymer and therefore the solvation helix. This helical structure is promoted by two mechanisms: steric effects and hydrogen bonding. An important finding concerns the demonstration by VCD of how an achiral solvent becomes chirally organized owing to the template effect of the covalent polymer helices, an effect that is silent to other structural techniques such as ECD or AFM and that hence significantly broadens the scope of these previous analyses.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available