Multistep photoinitiated charge separation in a molecular pentad

Thomas A. Moore; Devens Gust; Ana L. Moore; Seung Joo Lee; Edith Bittersmann; David K. Luttrull; Janice M. DeGraziano; Xiaochun C. Ma; Feng Gao

Multistep photoinitiated charge separation in a molecular pentad

Thomas A. Moore, Devens Gust, Ana L. Moore, Seung Joo Lee, Edith Bittersmann, David K. Luttrull, Janice M. DeGraziano, Xiaochun C. Ma, Feng Gao

Arizona State University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Pentads consisting of a diporphyrin moiety bearing both a carotenoid polyene and a diquinone are studied. It is shown that excitation of the porphyrin leads to the formation of a charge separated state with a quantum yield as high as 0.83 and a lifetime up to 340 μs, depending upon the structure of the pentad. The final charge separated state preserves over one-half of the initial excitation energy as chemical potential. This fact, coupled with the length of the molecules (ca. 80 angstrom), makes such photovoltaic species attractive candidates for incorporation into molecular electronic devices.

Original language	English
Title of host publication	Biomedical Engineering Perspectives
Subtitle of host publication	Health Care Technologies for the 1990's and Beyond
Publisher	Publ by IEEE
Pages	1737-1738
Number of pages	2
Edition	pt 4
ISBN (Print)	0879425598
Publication status	Published - 1990
Event	Proceedings of the 12th Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Philadelphia, PA, USA Duration: Nov 1 1990 → Nov 4 1990

Publication series

Name	Proceedings of the Annual Conference on Engineering in Medicine and Biology
Number	pt 4
ISSN (Print)	0589-1019

Other

Other	Proceedings of the 12th Annual International Conference of the IEEE Engineering in Medicine and Biology Society
City	Philadelphia, PA, USA
Period	11/1/90 → 11/4/90

ASJC Scopus subject areas

Signal Processing
Biomedical Engineering
Computer Vision and Pattern Recognition
Health Informatics

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Cite this

Moore, T. A., Gust, D., Moore, A. L., Lee, S. J., Bittersmann, E., Luttrull, D. K., DeGraziano, J. M., Ma, X. C., & Gao, F. (1990). Multistep photoinitiated charge separation in a molecular pentad. In Biomedical Engineering Perspectives: Health Care Technologies for the 1990's and Beyond (pt 4 ed., pp. 1737-1738). (Proceedings of the Annual Conference on Engineering in Medicine and Biology; No. pt 4). Publ by IEEE.

Multistep photoinitiated charge separation in a molecular pentad. / Moore, Thomas A.; Gust, Devens ; Moore, Ana L.; Lee, Seung Joo; Bittersmann, Edith; Luttrull, David K.; DeGraziano, Janice M.; Ma, Xiaochun C.; Gao, Feng.

Biomedical Engineering Perspectives: Health Care Technologies for the 1990's and Beyond. pt 4. ed. Publ by IEEE, 1990. p. 1737-1738 (Proceedings of the Annual Conference on Engineering in Medicine and Biology; No. pt 4).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Moore, TA , Gust, D , Moore, AL, Lee, SJ, Bittersmann, E, Luttrull, DK, DeGraziano, JM, Ma, XC & Gao, F 1990, Multistep photoinitiated charge separation in a molecular pentad. in Biomedical Engineering Perspectives: Health Care Technologies for the 1990's and Beyond. pt 4 edn, Proceedings of the Annual Conference on Engineering in Medicine and Biology, no. pt 4, Publ by IEEE, pp. 1737-1738, Proceedings of the 12th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Philadelphia, PA, USA, 11/1/90.

Moore, Thomas A. ; Gust, Devens ; Moore, Ana L. ; Lee, Seung Joo ; Bittersmann, Edith ; Luttrull, David K. ; DeGraziano, Janice M. ; Ma, Xiaochun C. ; Gao, Feng. / Multistep photoinitiated charge separation in a molecular pentad. Biomedical Engineering Perspectives: Health Care Technologies for the 1990's and Beyond. pt 4. ed. Publ by IEEE, 1990. pp. 1737-1738 (Proceedings of the Annual Conference on Engineering in Medicine and Biology; pt 4).

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abstract = "Pentads consisting of a diporphyrin moiety bearing both a carotenoid polyene and a diquinone are studied. It is shown that excitation of the porphyrin leads to the formation of a charge separated state with a quantum yield as high as 0.83 and a lifetime up to 340 μs, depending upon the structure of the pentad. The final charge separated state preserves over one-half of the initial excitation energy as chemical potential. This fact, coupled with the length of the molecules (ca. 80 angstrom), makes such photovoltaic species attractive candidates for incorporation into molecular electronic devices.",

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