Photoinitiated electron transfer in multichromophoric species: Synthetic tetrads and pentads

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This project involves the design, synthesis and study of molecules which mimic some of the important aspects of photosynthetic electron and energy transfer. This research project is leading to a better understanding of the energy conserving steps of photosynthesis via the study of synthetic model systems which abstract features of the natural photosynthetic apparatus. The knowledge gained from these studies will aid in the design of artificial photosynthetic reaction centers which employ the basic chemistry and physics of photosynthesis to help meet mankind`s energy needs. The approach to artificial photosynthesis employed in this project is to use synthetic pigments, electron ... continued below

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Medium: P; Size: 54 p.

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Creator: Unknown. March 1, 1993.

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Description

This project involves the design, synthesis and study of molecules which mimic some of the important aspects of photosynthetic electron and energy transfer. This research project is leading to a better understanding of the energy conserving steps of photosynthesis via the study of synthetic model systems which abstract features of the natural photosynthetic apparatus. The knowledge gained from these studies will aid in the design of artificial photosynthetic reaction centers which employ the basic chemistry and physics of photosynthesis to help meet mankind`s energy needs. The approach to artificial photosynthesis employed in this project is to use synthetic pigments, electron donors, and electron acceptors similar to those found in biological reaction centers, but to replace the protein component with covalent bonds. These chemical linkages determine the electronic coupling between the various moieties by controlling separation, relative orientation, and overlap of electronic orbitals. The model systems are designed to mimic the following aspects of natural photosynthetic electron transfer: electron donation from a tetrapyrrole excited single state, electron transfer between tetrapyrroles, electron transfer from tetrapyrroles to quinones, and electron transfer between quinones with different redox properties. In addition, they mimic carotenoid antenna function in photosynthesis (singlet-singlet energy transfer from carotenoid polyenes to chlorophyll) and carotenoid photoprotection from singlet oxygen damage (triplet-triplet energy transfer from chlorophyll to carotenoids).

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Medium: P; Size: 54 p.

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OSTI as DE95009806

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  • Other Information: PBD: Mar 1993

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  • Other: DE95009806
  • Report No.: DOE/ER/13791--T2
  • Grant Number: FG02-87ER13791
  • DOI: 10.2172/41331 | External Link
  • Office of Scientific & Technical Information Report Number: 41331
  • Archival Resource Key: ark:/67531/metadc688250

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • March 1, 1993

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  • July 25, 2015, 2:20 a.m.

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  • Nov. 24, 2015, 7:18 p.m.

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Photoinitiated electron transfer in multichromophoric species: Synthetic tetrads and pentads, report, March 1, 1993; United States. (digital.library.unt.edu/ark:/67531/metadc688250/: accessed October 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.