Structural features in aligned poly(3-alkylthiophene) films revealed by grazing incidence X-ray diffraction

Bolognesi, A., Botta, C., Mercogliano, C., Porzio, W., Jukes, P.C., Geoghegan, M., Grell, M., Durell, M., Trolley, Dean, Das, A. and MacDonald, John Emyr ORCID: https://orcid.org/0000-0001-5504-1692 2004. Structural features in aligned poly(3-alkylthiophene) films revealed by grazing incidence X-ray diffraction. Polymer 45 (12) , pp. 4133-4138. 10.1016/j.polymer.2004.03.102

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Abstract

The structural ordering in as-spun and rubbed (then annealed) thin films of poly[(3-hexylmethoxy)thiophene] has been investigated by means of grazing incidence X-ray diffraction (GIXRD) and the results have been compared with the structural data as obtained from XRD on powder samples. In the structure of the as-spun films the thiophene rings in the backbone lie parallel to the plane of the interface with a well-defined separation among the chains of 19 Å. Rubbing the films creates a unique direction in which the domain size is increased, whereas ordering normal to the rubbing direction is greatly diminished, leading to dichroic behavior. Annealing the films at 95 °C seems to have no significant effect on the ordering thereafter.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QC Physics
Uncontrolled Keywords:	Polymer alignment; Grazing incidence X-ray diffraction; Polythiophene
Publisher:	Elsevier
ISSN:	0032-3861
Last Modified:	24 Oct 2022 10:47
URI:	https://orca.cardiff.ac.uk/id/eprint/45904

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