Lithography-Free Water Stable Conductive Polymer Nanowires

Free-standing nanowires can gain intracellular access without causing stress or apoptosis. Current approaches to generate nanowires focus on lithographic patterning and inorganic materials (Si, GaAs, Al<sub>2</sub>O<sub>3</sub>, etc.) while organic materials are less explored. Use of organic conductive polymers allows for the creation of soft mixed ion-electron conducting nanowires. Processing conductive polymers into nanowires is challenging due to the harsh chemicals and processing conditions used. Here, we demonstrate a lithography-free and scalable method to generate all-organic, water-stable nanowires composed of conductive polymers. A nanoporous membrane is filled with conductive polymer in solution, followed by a cross-linking step to make the polymer water stable. The surface of the membrane is anisotropically etched using a reactive ion etcher to reveal the polymer inside the pores, which extends from the membrane as nanowires. We interface the nanowires with model algal cells and human primary hematopoietic stem and progenitor cells.

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Publication Details

Journal
Nano Letters
Published
2025-02-13
DOI
https://doi.org/10.1021/acs.nanolett.4c05016
Citations
2
Primary Topic
Advanced Sensor and Energy Harvesting Materials
Type
article
Field-Weighted Citation Impact
1.35

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article

Lithography-Free Water Stable Conductive Polymer Nanowires

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Advanced Sensor and Energy Harvesting Materials
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article

Lithography-Free Water Stable Conductive Polymer Nanowires

Muhammad Anwar Shameem, Roger Olsson, Ludwig Schmiderer, Umut Aydemir, Michael Larsson, Damien Hughes, Fredrik Ek, Abdelrazek H. Mousa, Chiara Musumeci, Magnus Berggren, Jonas Larsson, Martin Hjort
article en
2 citations

Abstract

Free-standing nanowires can gain intracellular access without causing stress or apoptosis. Current approaches to generate nanowires focus on lithographic patterning and inorganic materials (Si, GaAs, Al<sub>2</sub>O<sub>3</sub>, etc.) while organic materials are less explored. Use of organic conductive polymers allows for the creation of soft mixed ion-electron conducting nanowires. Processing conductive polymers into nanowires is challenging due to the harsh chemicals and processing conditions used. Here, we demonstrate a lithography-free and scalable method to generate all-organic, water-stable nanowires composed of conductive polymers. A nanoporous membrane is filled with conductive polymer in solution, followed by a cross-linking step to make the polymer water stable. The surface of the membrane is anisotropically etched using a reactive ion etcher to reveal the polymer inside the pores, which extends from the membrane as nanowires. We interface the nanowires with model algal cells and human primary hematopoietic stem and progenitor cells.

Nano LettersVol. 25(8)
Linköping University (SE), Lund University (SE), Karolinska Institutet (SE), Gene Therapy Laboratory (FR), Io Therapeutics (United States) (US), University of Gothenburg (SE)
Carl Tryggers Stiftelse för Vetenskaplig Forskning, Crafoordska Stiftelsen, Linköpings Universitet, Vetenskapsrådet, Magnus Bergvalls Stiftelse, Stiftelsen för Strategisk Forskning
Clean water and sanitation
Openalex Percentile: Top 22%
Advanced Sensor and Energy Harvesting Materials
1.35
DOIOpen Access PDFOpenAlex
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