# Organogel Actuators Based on Redox-Responsive Foldamers: Amplification of Molecular Machine’s Motion to Macroscopic Scale

https://mdr.nims.go.jp/datasets/b1feed52-f809-4722-9214-83dbb5332ae7

## Files

- [Manuscript_MDR.pdf](https://mdr.nims.go.jp/filesets/664cd15c-4605-4582-9108-b7ddc1a8ee48/download) ([Detail](https://mdr.nims.go.jp/filesets/664cd15c-4605-4582-9108-b7ddc1a8ee48.md))

## Id

b1feed52-f809-4722-9214-83dbb5332ae7

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2023-12-05T05:47:57.583827Z

## Updated at

2024-01-05T13:13:09.049621Z

## Published at

2023-12-26T04:13:33.617570Z

## Doi

https://doi.org/10.48505/nims.4293

## First published url

https://doi.org/10.1021/acsapm.2c01783

## Date published

2023-01-13

## Recorded date published

2023-1-13

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: 'Organogel Actuators Based on Redox-Responsive Foldamers: Amplification of
    Molecular Machine’s Motion to Macroscopic Scale'
  title_type: original
  lang: en

## Description

- description: The amplification of nanoscale motions of artificial molecular machines
    to the macroscopic level is a major challenge. In this study, a redox-responsive
    donor−acceptor (DA)-type foldamer, in which tetrathiafulvalene and viologen units
    are alternatively connected, was installed in an organogel network as a “working
    unit” to induce actuation. The ion gels were successfully synthesized via thermal
    azide−alkyne cycloaddition reaction between the azide-functionalized foldamer
    and the tetra-alkyne-ester cross-linker in an ionic liquid. The reaction efficiency
    of the cross-link was estimated from the stress−elongation curve. It was confirmed
    that the foldamers retained their electrochemical activity in the gel. Redox-responsive
    actuation of the gel was confirmed in a 0.1 M tetrabutylammonium·PF6 acetonitrile
    solution. Through chemical oxidation, the characteristic length of the gel could
    be increased up to 125% of its initial length, indicating that the volume of the
    gel could be increased to 195%. Reversible gel size changes in response to the
    redox reactions were confirmed. The change in the gel size was induced by equilibrium
    shift of the foldamer conformation between the folded state and extended state.
    The actuation force during the reduction of the partially oxidized gel was ca.
    3.4 kPa, indicating that the gel can generate 35 gf cm−2. This actuation force
    proves the great potential of the redox-responsive foldamers to act as a molecular
    machine for realizing macroscopic actuation.
  description_type: abstract
  lang: eng

## Creator

- name: Taichi Ikeda
  role: author
  orcid: https://orcid.org/0000-0001-6650-5798
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

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## Keyword

- subject: Molecular machine
  schema: not_defined
- subject: Foldamer
  schema: not_defined
- subject: Stimuli-responsive materials
  schema: not_defined
- subject: Gel
  schema: not_defined
- subject: Actuator
  schema: not_defined

## Rights

- description: This document is the Accepted Manuscript version of a Published Work
    that appeared in final form in ACS Applied Polymer Materials, copyright © 2022
    The Author after peer review and technical editing by the publisher. To access
    the final edited and published work see https://doi.org/10.1021/acsapm.2c01783.
  identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2022-12-23
end_date: 2023-12-23

## Journal

- title: ACS Applied Polymer Materials
  issn: '26376105'
  volume: '5'
  issue: '1'
  start_page: 839
  end_page: 845

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## Chemical composition



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## Fileset

- id: 664cd15c-4605-4582-9108-b7ddc1a8ee48
  filename: Manuscript_MDR.pdf
  content_type: application/pdf
  size: 880936
  md5: '018d08061fd97cae2886f2389e3e359f'

## Thumbnail

fileset_id: 664cd15c-4605-4582-9108-b7ddc1a8ee48
filename: Manuscript_MDR.pdf