Ultra-mechanosensitive Chloride Ion Transport through Bioinspired High-Density Elastomeric Nanochannels

Mechanosensitive ion channels play crucial roles in physiological activities, where small mechanical stimuli induce the membrane tension, trigger the ion channels' deformation, and are further transformed into significant electrochemical signals. Artificial ion channels with stiff moduli have been developed to mimic mechanosensory behaviors, exhibiting an electrochemical response by the high-pressure-induced flow. However, fabricating flexible mechanosensitive channels capable of regulating specific ion transporting upon dramatic deformation has remained a challenge. Here, we demonstrate bioinspired high-density elastomeric channels self-assembled by polyisoprene-b-poly4-vinylpyridine, which exhibit ultra-mechanosensitive chloride ion transport resulting from nanochannel deformation. The PI-formed continuous elastic matrix can transmit external forces into internal tensions, while P4VP forms transmembrane chloride channels that undergo dramatic deformation and respond to mechanical stimuli. The integrated and flexible chloride channels present a dramatic and stable electrochemical signal toward a low pressure of 0.2 mbar. This research first demonstrates the artificial mechanosensory chloride channels, which could provide a promising avenue for designing flexible and responsive channel systems.

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:145

Enthalten in:

Journal of the American Chemical Society - 145(2023), 34 vom: 30. Aug., Seite 19098-19106

Sprache:

Englisch

Beteiligte Personen:

Li, Chao [VerfasserIn]
Liu, Pengxiang [VerfasserIn]
Zhi, Yafang [VerfasserIn]
Zhai, Yi [VerfasserIn]
Liu, Zhiwen [VerfasserIn]
Gao, Longcheng [VerfasserIn]
Jiang, Lei [VerfasserIn]

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Anmerkungen:

Date Revised 30.08.2023

published: Print-Electronic

Citation Status PubMed-not-MEDLINE

doi:

10.1021/jacs.3c07675

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM361025009