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Probing the molecular orientation of a single conjugated polymer via nano-gap SERS

Marshall, Addison R L; Roberts, Matthew; Gierschner, Johannes; Bouillard, Jean-Sebastien G; Adawi, Ali M.

Authors

Addison R L Marshall

Matthew Roberts

Johannes Gierschner



Abstract

Determining the molecular orientation at the single molecule level is of key importance for a wide range of applica-tions ranging from molecular electronic devices to biomedical applications. In this work Surface-Enhanced Raman Scattering (SERS) was used to probe the light emitting conjugated polymer F8-PFB at the single molecule level using nanoparticle on an extended metallic film nano-gap. The directional field enhancement of the nano-gap combined with Density Functional Theory (DFT) calculations was used to determine the orientation of the molecule. This analysis revealed that the spin-coated conjugated polymer preferentially aligns its molecular chains parallel to the metallic substrate. The integration of this approach in nanofabrication and synthesis will have a profound impact on different fields ranging from molecular electronic devices to biomedical applications.

Citation

Marshall, A. R. L., Roberts, M., Gierschner, J., Bouillard, J. G., & Adawi, A. M. (2019). Probing the molecular orientation of a single conjugated polymer via nano-gap SERS. ACS applied polymer materials, 1(5), 1175-1180. https://doi.org/10.1021/acsapm.9b00180

Journal Article Type Article
Acceptance Date Apr 23, 2019
Online Publication Date Apr 23, 2019
Publication Date May 10, 2019
Deposit Date May 1, 2019
Publicly Available Date Apr 24, 2020
Journal ACS Applied Polymer Materials
Electronic ISSN 2637-6105
Publisher American Chemical Society
Peer Reviewed Peer Reviewed
Volume 1
Issue 5
Pages 1175-1180
DOI https://doi.org/10.1021/acsapm.9b00180
Public URL https://hull-repository.worktribe.com/output/1693985
Publisher URL https://pubs.acs.org/doi/10.1021/acsapm.9b00180
Additional Information This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS applied polymer materials, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsapm.9b00180

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