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Conducting microhelices from self-assembly of protein fibrils
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, Faculty of Science & Engineering.
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2017 (English)In: Soft Matter, ISSN 1744-683X, E-ISSN 1744-6848, Vol. 13, no 25, 4412-4417 p.Article in journal (Refereed) Published
Abstract [en]

Herein we utilize insulin to prepare amyloid based chiral heliceswith either right or left handed helicity. We demonstrate that thehelices can be utilized as structural templates for the conductingpolymer alkoxysulfonate poly(ethylenedioxythiophene) (PEDOT-S).The chirality of the helical assembly is transferred to PEDOT-S asdemonstrated by polarized optical microscopy (POM) and CircularDichroism (CD). Analysis of the helices by conductive atomic force(c-AFM) shows significant conductivity. In addition the morphologyof the template structure is stabilized by PEDOT-S. Theseconductive helical structures represent promising candidates in ourquest for THz resonators.

Place, publisher, year, edition, pages
Royal Society of Chemistry, 2017. Vol. 13, no 25, 4412-4417 p.
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:liu:diva-137821DOI: 10.1039/c7sm00068eISI: 000404564500001PubMedID: 28590474OAI: oai:DiVA.org:liu-137821DiVA: diva2:1104027
Note

Funding agencies: Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University [SFO-Mat-LiU 2009-00971]; Strategic Research Foundation through the project OPEN; Knut and Alice Wallenberg foundation; Wallenberg Scholar gran

Available from: 2017-05-31 Created: 2017-05-31 Last updated: 2017-10-04
In thesis
1. On decoration of biomolecular scaffolds with a conjugated polyelectrolyte
Open this publication in new window or tab >>On decoration of biomolecular scaffolds with a conjugated polyelectrolyte
2017 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Biotemplating is the art of using a biological structure as a scaffold which is decorated with a functional material. In this fashion the structures will gain new functionalities and biotemplating offers a simple route of mass-producing mesoscopic material with new interesting properties. Biological structures are abundant and come in a great variety of elaborate and due to their natural origin they could be more suitable for interaction with biological systems than wholly synthetic materials. Conducting polymers are a novel class of material which was developed just 40 years ago and are well suited for interaction with biological material due to their organic composition. Furthermore the electronic properties of the conducting polymers can be tuned giving rise to dynamic control of the behavior of the material. Self-assembly processes are interesting since they do not require complicated or energy demanding processing conditions. This is particularly important as most biological materials are unstable at elevated temperatures or harsh environments. The main aim of this thesis is to show the possibility of using self-assembly to decorate a conducting polymer onto various biotemplates. Due to the intrinsic variety in charge, size and structure between the available natural scaffolds it is difficult, if not impossible, to find a universal method.

In this thesis we show how biotemplating can be used to create new hybrid materials by self-assembling a conducting polymer with biological structures based on DNA, protein, lipids and cellulose, and in this fashion create material with novel optical and electronic properties.

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2017. 51 p.
Series
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 1885
National Category
Polymer Chemistry
Identifiers
urn:nbn:se:liu:diva-141675 (URN)10.3384/diss.diva-141675 (DOI)9789176854372 (ISBN)
Public defence
2017-10-19, Planck, Fysikhuset, Campus Valla, Linköping, 10:15 (English)
Opponent
Supervisors
Funder
Swedish Foundation for Strategic Research Knut and Alice Wallenberg Foundation
Available from: 2017-10-04 Created: 2017-10-04 Last updated: 2017-10-05Bibliographically approved

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