Soluble polyacetylenes derived from the ring-opening metathesis polymerization (ROMP) of substituted cyclooctatetraenes. Electrochemical characterization and Schottky barrier devices

Thomas H. Jozefiak, Michael J. Sailor, Eric J. Ginsburg, Christopher B. Gorman, Nathan S Lewis, Robert H. Grubbs

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsMarcus F. Lawrence, Arthur J. Frank, S. Ramasesha, Carl C. Wamser
PublisherPubl by Int Soc for Optical Engineering
Pages8-19
Number of pages12
Volume1436
Publication statusPublished - 1991
EventPhotochemistry and Photoelectrochemistry of Organic and Inorganic Molecular Thin Films - Los Angeles, CA, USA
Duration: Jan 23 1991Jan 24 1991

Other

OtherPhotochemistry and Photoelectrochemistry of Organic and Inorganic Molecular Thin Films
CityLos Angeles, CA, USA
Period1/23/911/24/91

Fingerprint

Polyacetylenes
polyacetylene
metathesis
Ring opening polymerization
polymerization
rings
Diodes
Schottky diodes
Metals
Semiconductor materials
Photoelectrochemical cells
Silicon
polymers
Semiconducting organic compounds
Conducting polymers
metals
Polymer solutions
Isomerization
Iodine
Polymer films

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Jozefiak, T. H., Sailor, M. J., Ginsburg, E. J., Gorman, C. B., Lewis, N. S., & Grubbs, R. H. (1991). Soluble polyacetylenes derived from the ring-opening metathesis polymerization (ROMP) of substituted cyclooctatetraenes. Electrochemical characterization and Schottky barrier devices. In M. F. Lawrence, A. J. Frank, S. Ramasesha, & C. C. Wamser (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 1436, pp. 8-19). Publ by Int Soc for Optical Engineering.

Soluble polyacetylenes derived from the ring-opening metathesis polymerization (ROMP) of substituted cyclooctatetraenes. Electrochemical characterization and Schottky barrier devices. / Jozefiak, Thomas H.; Sailor, Michael J.; Ginsburg, Eric J.; Gorman, Christopher B.; Lewis, Nathan S; Grubbs, Robert H.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / Marcus F. Lawrence; Arthur J. Frank; S. Ramasesha; Carl C. Wamser. Vol. 1436 Publ by Int Soc for Optical Engineering, 1991. p. 8-19.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Jozefiak, TH, Sailor, MJ, Ginsburg, EJ, Gorman, CB, Lewis, NS & Grubbs, RH 1991, Soluble polyacetylenes derived from the ring-opening metathesis polymerization (ROMP) of substituted cyclooctatetraenes. Electrochemical characterization and Schottky barrier devices. in MF Lawrence, AJ Frank, S Ramasesha & CC Wamser (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 1436, Publ by Int Soc for Optical Engineering, pp. 8-19, Photochemistry and Photoelectrochemistry of Organic and Inorganic Molecular Thin Films, Los Angeles, CA, USA, 1/23/91.
Jozefiak TH, Sailor MJ, Ginsburg EJ, Gorman CB, Lewis NS, Grubbs RH. Soluble polyacetylenes derived from the ring-opening metathesis polymerization (ROMP) of substituted cyclooctatetraenes. Electrochemical characterization and Schottky barrier devices. In Lawrence MF, Frank AJ, Ramasesha S, Wamser CC, editors, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 1436. Publ by Int Soc for Optical Engineering. 1991. p. 8-19
Jozefiak, Thomas H. ; Sailor, Michael J. ; Ginsburg, Eric J. ; Gorman, Christopher B. ; Lewis, Nathan S ; Grubbs, Robert H. / Soluble polyacetylenes derived from the ring-opening metathesis polymerization (ROMP) of substituted cyclooctatetraenes. Electrochemical characterization and Schottky barrier devices. Proceedings of SPIE - The International Society for Optical Engineering. editor / Marcus F. Lawrence ; Arthur J. Frank ; S. Ramasesha ; Carl C. Wamser. Vol. 1436 Publ by Int Soc for Optical Engineering, 1991. pp. 8-19
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