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ULTRAFAST ELECTRON TRANSFER IN BIOMIMETIC SOLAR ENERGY CONVERSION ARCHITECTURES

Henrich, Joseph David
http://rave.ohiolink.edu/etdc/view?acc_num=osu1284958760

Abstract Details

2010, Doctor of Philosophy, Ohio State University, Chemistry.
The task of finding a sustainable energy resource is vital for the well being of future generations of human beings. Many researchers are attempting to harness the power of the sun to fuel every day society. This work is an attempt to characterize elementary electron transfer processes that take place in a proposed solar energy conversion architecture. To follow the electron transfer events, femtosecond time-resolved spectroscopies were used. Using pump and probe pulses with sub 100 fs pulse durations allows for the observation of very fast electronic processes. This allows for the investigation of portions of the solar energy conversion architecture the moment after it is exposed to a light source. In this work the charge-separated states of the light absorbing photosensitizer RuLDQ and its parent molecule RuL are carefully determined. Although these two molecules are structurally very similar their photophysics are vastly different. Also, a charge relay system involving methyl viologen, ion exchanged into a zeolite framework, is examined. Effects of the zeolite environment on the entrapped methyl viologen are less drastic than reported in previous work. Lastly, an elusive relaxation pathway for photoexcited methyl viologen in water is determined to be the results of a proton-coupled electron transfer reaction with a water molecule. This work provides insight to the smallest steps of a solar energy conversion architecture in the hope that future investigators can use these results to help advance the field of solar energy conversion, leading to an efficient cost effective solar cell.
Bern Kohler, PhD (Advisor)
Prabir Dutta, PhD (Advisor)
Sherwin Singer, PhD (Committee Member)
Terry Gustafson, PhD (Committee Member)
195 p.
Chemistry
ultrafast spectroscopy; solar energy; electron transfer

Recommended Citations

Citations

  • Henrich, J. D. (2010). ULTRAFAST ELECTRON TRANSFER IN BIOMIMETIC SOLAR ENERGY CONVERSION ARCHITECTURES [Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1284958760

    APA Style (7th edition)

  • Henrich, Joseph. ULTRAFAST ELECTRON TRANSFER IN BIOMIMETIC SOLAR ENERGY CONVERSION ARCHITECTURES. 2010. Ohio State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1284958760.

    MLA Style (8th edition)

  • Henrich, Joseph. "ULTRAFAST ELECTRON TRANSFER IN BIOMIMETIC SOLAR ENERGY CONVERSION ARCHITECTURES." Doctoral dissertation, Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1284958760

    Chicago Manual of Style (17th edition)

osu1284958760
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© 2010, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.