Vladimir V. Korolkov * email@example.com
Ultra-high resolution imaging of thin films and single strands of polythiophene using atomic force microscopy
Korolkov, Vladimir V.; Summerfield, Alex; Murphy, Alanna; Amabilino, David B.; Watanabe, Kenji; Taniguchi, Takashi; Beton, Peter H.
DAVID AMABILINO DAVID.AMABILINO@NOTTINGHAM.AC.UK
Esprc/Gsk Professor of Sustainablechemistry
PETER BETON firstname.lastname@example.org
Professor of Physics
Real-space images of polymers with sub-molecular resolution could provide valuable insights into the relationship between morphology and functionality of polymer optoelectronic devices, but their acquisition is problematic due to perceived limitations in atomic force microscopy (AFM). We show that individual thiophene units and the lattice of semicrystalline spin-coated films of polythiophenes (PTs) may be resolved using AFM under ambient conditions through the low-amplitude (≤ 1 nm) excitation of higher eigenmodes of a cantilever. PT strands are adsorbed on hexagonal boron nitride near-parallel to the surface in islands with lateral dimensions ~10 nm. On the surface of a spin-coated PT thin film, in which the thiophene groups are perpendicular to the interface, we resolve terminal CH3-groups in a square arrangement with a lattice constant 0.55 nm from which we can identify abrupt boundaries and also regions with more slowly varying disorder, which allow comparison with proposed models of PT domains.
|Journal Article Type||Article|
|Publication Date||Apr 4, 2019|
|Publisher||Nature Publishing Group|
|Peer Reviewed||Peer Reviewed|
|APA6 Citation||Korolkov, V. V., Summerfield, A., Murphy, A., Amabilino, D. B., Watanabe, K., Taniguchi, T., & Beton, P. H. (2019). Ultra-high resolution imaging of thin films and single strands of polythiophene using atomic force microscopy. Nature Communications, 10, https://doi.org/10.1038/s41467-019-09571-6|
|Keywords||General Biochemistry, Genetics and Molecular Biology; General Physics and Astronomy; General Chemistry|
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