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Soluble polyacetylenes derived from the ring-opening metathesis polymerization of substituted cyclooctatetraenes: electrochemical characterization and Schottky barrier devices

Jozefiak, Thomas H. and Sailor, Michael J. and Ginsburg, Eric J. and Gorman, Christopher B. and Lewis, Nathan S. and Grubbs, Robert H. (1991) Soluble polyacetylenes derived from the ring-opening metathesis polymerization of substituted cyclooctatetraenes: electrochemical characterization and Schottky barrier devices. In: Photochemistry and Photoelectrochemistry of Organic and Inorganic Molecular Thin Films. Proceedings of SPIE. No.1436. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 8-19. ISBN 0819405264. https://resolver.caltech.edu/CaltechAUTHORS:20180723-120031113

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Abstract

Recent developments in ring-opening metathesis polymerization (ROMP) have enabled the synthesis of poly-cyclooctatetraene (poly-COT), a material which is isostructural to polyacetylene. This liquid-phase polymerization method allows facile construction of interfaces, films, and devices with polyacetylene-like materials. The ROMP method also allows the preparation of soluble, yet highly conjugated polyacetylene analogs from substituted cyclooctatetraenes (R-COT). The redox characteristics of R-COT polymers were investigated at electrodes modified with thin polymer films. Voltammetric methods were used to characterize the redox response, band gap, electrochemical doping, and cis-trans isomerization properties of these polyenes. We have applied poly-COT technology to the fabrication of Schottky diodes and photoelectrochemical cells, by forming poly-COT films on semiconductor surfaces. The resultant semiconductor/organic-metal interfaces behave more ideally than semiconductor contacts with conventional metals, in that changes in the work function of the conducting polymer exert a large and predictable effect on the electrical properties of the resulting Schottky diodes. Transparent films of the solution-processible polymer poly- trimethylsilyl-cyclooctatetraene (poly-TMS-COT) have been cast onto n-silicon substrates and doped with iodine to form surface barrier solar cells. These devices produce photovoltages that are much larger than can be obtained from n-silicon contacts with conventional metals.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.45109DOIArticle
ORCID:
AuthorORCID
Lewis, Nathan S.0000-0001-5245-0538
Grubbs, Robert H.0000-0002-0057-7817
Alternate Title:Soluble polyacetylenes derived from the ring-opening metathesis polymerization (ROMP) of substituted cyclooctatetraenes: electrochemical characterization and Schottky barrier devices
Additional Information:© 1991 Society of Photo-Optical Instrumentation Engineers (SPIE). THJ, EJG, CBG, and RHG acknowledge financial support from the Office of Naval Research. NSL and MJS acknowledge financial support from NSF grant CHE-8814694. EJG thanks IBM for a research fellowship. CBG thanks JPL for a research fellowship.
Funders:
Funding AgencyGrant Number
Office of Naval Research (ONR)UNSPECIFIED
NSFCHE-8814694
IBMUNSPECIFIED
JPLUNSPECIFIED
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Division of Chemistry and Chemical Engineering8376
Series Name:Proceedings of SPIE
Issue or Number:1436
Record Number:CaltechAUTHORS:20180723-120031113
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20180723-120031113
Official Citation:Thomas H. Jozefiak, Michael J. Sailor, Eric J. Ginsburg, Christopher B. Gorman, Nathan Saul Lewis, Robert H. Grubbs, "Soluble polyacetylenes derived from the ring-opening metathesis polymerization of substituted cyclooctatetraenes: electrochemical characterization and Schottky barrier devices", Proc. SPIE 1436, Photochemistry and Photoelectrochemistry of Organic and Inorganic Molecular Thin Films, (1 March 1991); doi: 10.1117/12.45109; https://doi.org/10.1117/12.45109
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:88134
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:23 Jul 2018 21:47
Last Modified:03 Oct 2019 20:03

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