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Article Dans Une Revue Angewandte Chemie Année : 2019

Self-Assembled Columnar Triazole-Quartets -an example of synergetic H-bonding / Anion-π Channels

Lee Arie van Der
Dan Dumitrescu
Mihail Barboiu

Résumé

The self-assembly of triazole-amphiphiles has been examined in homogenous solution, in the solid state and in the bilayer membranes. Single-crystal X-ray diffraction structures show that stacked protonated Triazole-quartets-T4 quartets are mutually stabilized by strong recognition with two inner anions. Anion Hbonding/ion-pairing are combined with anion-π recognition to produce columnar architectures, resulted through anion-π interactions between anions and triazole moieties of vicinal T 4 quartets. In bilayer membranes, low transport activity is observed when the T 4 channels are operated as H + /Xtranslocators, but higher transport activity is observed when Xtranslocation was performed in the presence of K +carrier valinomycin. The anions channel results are interpreted as arising from discrete stacks of T-quartets where transport of would occur through the stacked T 4 macrocycles. These self-assembled channels presenting amazing structural behaviours, directionality, strong anion encapsulation via H-bonding supported with vicinal anion-π interactions are proposed as artificial supramolecular channels that transport anions across lipid bilayer membranes.

Domaines

Chimie
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Dates et versions

hal-03031079 , version 1 (30-11-2020)

Identifiants

Citer

Shaoping Zheng, Yuhao Li, Ji-Jun Jiang, Lee Arie van Der, Dan Dumitrescu, et al.. Self-Assembled Columnar Triazole-Quartets -an example of synergetic H-bonding / Anion-π Channels. Angewandte Chemie, 2019, 131 (35), pp.12165-12170. ⟨10.1002/ange.201904808⟩. ⟨hal-03031079⟩
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