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.
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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. | ||||||||||
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Series Name: | Proceedings of SPIE | ||||||||||
Issue or Number: | 1436 | ||||||||||
DOI: | 10.1117/12.45109 | ||||||||||
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: | 16 Nov 2021 00:24 |
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