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Method Matters: Exploring Alkoxysulfonate-Functionalized Poly(3,4-ethylenedioxythiophene) and Its Unintentional Self-Aggregating Copolymer toward Injectable Bioelectronics
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- Mousa, Abdelrazek H. (författare)
- University of Gothenburg,Lund University,Lunds universitet,Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,Kemisk biologi med inriktning mot läkemedelsutveckling,Forskargrupper vid Lunds universitet,Chemical Biology and Therapeutics,Lund University Research Groups,Univ Gothenburg, Sweden; Lund Univ, Sweden
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- Bliman, David, 1982 (författare)
- University of Gothenburg,Lund University,Lunds universitet,Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,Kemisk biologi med inriktning mot läkemedelsutveckling,Forskargrupper vid Lunds universitet,Chemical Biology and Therapeutics,Lund University Research Groups,Univ Gothenburg, Sweden; Lund Univ, Sweden
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- Hiram Betancourt, Lazaro (författare)
- Lund University,Lunds universitet,Klinisk kemi, Malmö,Forskargrupper vid Lunds universitet,Clinical Protein Science and Imaging,Clinical Chemistry, Malmö,Lund University Research Groups,Skåne University Hospital,Lund Univ, Sweden; Lund Univ, Sweden
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- (creator_code:org_t)
- 2022-02-28
- 2022
- Engelska.
- Ingår i: Chemistry of Materials. - : American Chemical Society (ACS). - 0897-4756 .- 1520-5002. ; 34:6, s. 2752-2763
- Tidskriftsartikel (refereegranskat)
Abstract
Ämnesord
Stäng
- Injectable bioelectronics could become an alternative or a complement to traditional drug treatments. To this end, a new self-doped p- type conducting PEDOT-S copolymer (A5) was synthesized. This copolymer formed highly water-dispersed nanoparticles and aggregated into a mixed ion-electron conducting hydrogel when injected into a tissue model. First, we synthetically repeated most of the published methods for PEDOT-S at the lab scale. Surprisingly, analysis using high-resolution matrix-assisted laser desorption ionization-mass spectroscopy showed that almost all the methods generated PEDOT-S derivatives with the same polymer lengths (i.e., oligomers, seven to eight monomers in average); thus, the polymer length cannot account for the differences in the conductivities reported earlier. The main difference, however, was that some methods generated an unintentional copolymer P(EDOT-S/EDOT-OH) that is more prone to aggregate and display higher conductivities in general than the PEDOT-S homopolymer. Based on this, we synthesized the PEDOT-S derivative A5, that displayed the highest film conductivity (33 S cm(-1)) among all PEDOT-S derivatives synthesized. Injecting A5 nanoparticles into the agarose gel cast with a physiological buffer generated a stable and highly conductive hydrogel (1-5 S cm(-1)), where no conductive structures were seen in agarose with the other PEDOT-S derivatives. Furthermore, the ion-treated A5 hydrogel remained stable and maintained initial conductivities for 7 months (the longest period tested) in pure water, and A5 mixed with Fe3O4 nanoparticles generated a magnetoconductive relay device in water. Thus, we have successfully synthesized a water-processable, syringe-injectable, and self-doped PEDOT-S polymer capable of forming a conductive hydrogel in tissue mimics, thereby paving a way for future applications within in vivo electronics.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
Nyckelord
- scientific importance
- 3
- 4-ethylenedioxythiophene
- recognition
- brain
- Chemistry
- Materials Science
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