Intrinsically conducting polymers belong to a class of organic polymers with intriguing electronic and physical properties specifically for electro-optical applications. Significant interest into doped polyaniline (PAni) can be attributed to its high conductivity and environmental stability. Poor dissolution in most solvents has thus far hindered the successful integration of PAni into commercial applications, which in turn, has led to the investigations of various deposition and acidic doping methods. Physical vapor deposition methods, including D.C. magnetron sputtering and vacuum thermal evaporation, have shown exceptional control over physical film properties (thickness and morphology). However, resulting films are less conductive than films deposited by conventional methods (i.e., spin and drop casting) due to interruption of the hyperconjugation of polymer chains. Specifically, vacuum thermal evaporation requires a postdoping process, which results in incorporation of impurities and oxidation of surface moieties. In this contribution, thermally evaporated films, sequentially doped by vacuum evaporation of an organic acid (camphorsulfonic acid, CSA) is explored. Spectroscopic evidence confirms the successful doping of PAni with CSA while physical characterization (atomic force microscopy) suggests films retain good morphology and are not damaged by the doping process. The procedure presented herein also combines other postpreparation methods in an attempt to improve conductivity and/or substrate adhesion.
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Research Article|
April 09 2015
Vacuum thermal evaporation of polyaniline doped with camphor sulfonic acid
Devon Boyne;
Devon Boyne
Department of Chemistry and Biochemistry,
University of Delaware
, Newark, Delaware 19716
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Nicola Menegazzo;
Nicola Menegazzo
Department of Chemistry and Biochemistry,
University of Delaware
, Newark, Delaware 19716
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Rachel C. Pupillo;
Rachel C. Pupillo
Department of Chemistry and Biochemistry,
University of Delaware
, Newark, Delaware 19716
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Joel Rosenthal;
Joel Rosenthal
Department of Chemistry and Biochemistry,
University of Delaware
, Newark, Delaware 19716
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Karl S. Booksh
Karl S. Booksh
a)
Department of Chemistry and Biochemistry,
University of Delaware
, Newark, Delaware 19716
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Devon Boyne
Nicola Menegazzo
Rachel C. Pupillo
Joel Rosenthal
Karl S. Booksh
a)
Department of Chemistry and Biochemistry,
University of Delaware
, Newark, Delaware 19716a)
Electronic mail: [email protected]
J. Vac. Sci. Technol. A 33, 031510 (2015)
Article history
Received:
November 13 2014
Accepted:
March 24 2015
Citation
Devon Boyne, Nicola Menegazzo, Rachel C. Pupillo, Joel Rosenthal, Karl S. Booksh; Vacuum thermal evaporation of polyaniline doped with camphor sulfonic acid. J. Vac. Sci. Technol. A 1 May 2015; 33 (3): 031510. https://doi.org/10.1116/1.4916990
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