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Morphology of Polythiophene Films Produced via Surface Polymerization by Ion-Assisted Deposition: A Combined Experimental and Computational Study

Published online by Cambridge University Press:  01 February 2011

Sanja Tepavcevic ,
Wen-Dung Hsu ,
Susan B Sinnott  and
Luke Hanley
Sanja Tepavcevic
Affiliation:
[email protected], University of Illinois at Chicago, Chemistry, 845 W Taylor MC 111, Chicago, IL, 60607, United States
Wen-Dung Hsu
Affiliation:
[email protected], University of Florida, Depatment of Material Science and Engineering, Gainesville, FL, 32611, United States
Susan B Sinnott
Affiliation:
[email protected], University of Florida, Depatment of Material Science and Engineering, Gainesville, FL, 32611, United States
Luke Hanley
Affiliation:
[email protected], University of Illinois at Chicago, Department of Chemistry, 845 W Taylor, MC 111, Chicago, IL, 60607, United States
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Abstract

Control of film morphology is widely recognized as one of the limiting factors in the development of conjugated polymers for photonic and electronic applications. Surface polymerization by ion-assisted deposition (SPIAD) is shown to drive film morphology. A wide variety of structures form in the SPIAD polythiophene films, including islands, lamellar structures, nanoscale crystallites, and fractal-like growth patterns. Density functional theory-molecular dynamic simulations are utilized to illustrate the manner in the incident ions affect polymerization, bond dissociation, and other chemical events in SPIAD. These ion-assisted events mediate thermal processes such as neutral deposition, sublimation, diffusion, and dewetting. However, these thermal processes are on longer timescales that cannot be directly studied by the computational techniques reported here.

Keywords

morphologypolymerizationslurry
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 937: Symposium M – Conjugated Organic Materials – Synthesis, Structure, Device, and Applications , 2006 , 0937-M03-19
Copyright
Copyright © Materials Research Society 2006

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