Direct extraction of photosynthetic electrons from single algal cells by nanoprobing system

Wonhyoung Ryu, Seoung Jai Bai, Joong Sun Park, Zubin Huang, Jeffrey Moseley, Tibor Fabian, Rainer J. Fasching, Arthur R. Grossman, Fritz B. Prinz

Research output: Contribution to journalArticle

56 Citations (Scopus)

Abstract

There are numerous sources of bioenergy that are generated by photosynthetic processes, for example, lipids, alcohols, hydrogen, and polysaccharides. However, generally only a small fraction of solar energy absorbed by photosynthetic organisms is converted to a form of energy that can be readily exploited. To more efficiently use the solar energy harvested by photosynthetic organisms, we evaluated the feasibility of generating bioelectricity by directly extracting electrons from the photosynthetic electron transport chain before they are used to fix CO2 into sugars and polysaccharides. From a living algal cell, Chlamydomonas reinhardtii, photosynthetic electrons (1.2 pA at 6000 mA/m2) were directly extracted without a mediator electron carrier by inserting a nanoelectrode into the algal chloroplast and applying an overvoltage. This result may represent an initial step in generating "high efficiency" bioelectricity by directly harvesting high energy photosynthetic electrons.

Original languageEnglish
Pages (from-to)1137-1143
Number of pages7
JournalNano letters
Volume10
Issue number4
DOIs
Publication statusPublished - 2010 Apr 14

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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    Ryu, W., Bai, S. J., Park, J. S., Huang, Z., Moseley, J., Fabian, T., Fasching, R. J., Grossman, A. R., & Prinz, F. B. (2010). Direct extraction of photosynthetic electrons from single algal cells by nanoprobing system. Nano letters, 10(4), 1137-1143. https://doi.org/10.1021/nl903141j