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Issue 61, 2017
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Multipodal dynamic coordination involving cation–π interactions to control the structure of helical polymers

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Abstract

A precise tuning of the four possible states of a helix (P/M helical sense and stretched/compressed helical backbone) is attained by controlling the complexation between Li+ and a poly(phenylacetylene) that bears amide, ester and phenyl ring functionalities at the pendant group. Depending on the MeOH ratio that is present as a cosolvent, different coordination sites are involved in interactions leading to complexes I–III, each one with a characteristic structure (tri-, bi-, and unipodal) and an associated helical state. This dynamic coordination allows the selective modification of the helical sense or the stretching/compression backbone of a helical polymer.

Graphical abstract: Multipodal dynamic coordination involving cation–π interactions to control the structure of helical polymers

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Article information


Submitted
31 May 2017
Accepted
06 Jul 2017
First published
06 Jul 2017

Chem. Commun., 2017,53, 8573-8576
Article type
Communication

Multipodal dynamic coordination involving cation–π interactions to control the structure of helical polymers

M. Alzubi, S. Arias, I. Louzao, E. Quiñoá, R. Riguera and F. Freire, Chem. Commun., 2017, 53, 8573
DOI: 10.1039/C7CC04220E

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