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Microbial biofilms as living photoconductors due to ultrafast electron transfer in cytochrome OmcS nanowires

Author

Listed:
  • Jens Neu

    (Yale University
    Yale University)

  • Catharine C. Shipps

    (Yale University
    Yale University)

  • Matthew J. Guberman-Pfeffer

    (Yale University
    Yale University)

  • Cong Shen

    (Yale University
    Yale University)

  • Vishok Srikanth

    (Yale University
    Yale University)

  • Jacob A. Spies

    (Yale University)

  • Nathan D. Kirchhofer

    (Oxford Instruments Asylum Research)

  • Sibel Ebru Yalcin

    (Yale University
    Yale University)

  • Gary W. Brudvig

    (Yale University)

  • Victor S. Batista

    (Yale University)

  • Nikhil S. Malvankar

    (Yale University
    Yale University)

Abstract

Light-induced microbial electron transfer has potential for efficient production of value-added chemicals, biofuels and biodegradable materials owing to diversified metabolic pathways. However, most microbes lack photoactive proteins and require synthetic photosensitizers that suffer from photocorrosion, photodegradation, cytotoxicity, and generation of photoexcited radicals that are harmful to cells, thus severely limiting the catalytic performance. Therefore, there is a pressing need for biocompatible photoconductive materials for efficient electronic interface between microbes and electrodes. Here we show that living biofilms of Geobacter sulfurreducens use nanowires of cytochrome OmcS as intrinsic photoconductors. Photoconductive atomic force microscopy shows up to 100-fold increase in photocurrent in purified individual nanowires. Photocurrents respond rapidly (

Suggested Citation

  • Jens Neu & Catharine C. Shipps & Matthew J. Guberman-Pfeffer & Cong Shen & Vishok Srikanth & Jacob A. Spies & Nathan D. Kirchhofer & Sibel Ebru Yalcin & Gary W. Brudvig & Victor S. Batista & Nikhil S., 2022. "Microbial biofilms as living photoconductors due to ultrafast electron transfer in cytochrome OmcS nanowires," Nature Communications, Nature, vol. 13(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-32659-5
    DOI: 10.1038/s41467-022-32659-5
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    References listed on IDEAS

    as
    1. Yangqi Gu & Vishok Srikanth & Aldo I. Salazar-Morales & Ruchi Jain & J. Patrick O’Brien & Sophia M. Yi & Rajesh Kumar Soni & Fadel A. Samatey & Sibel Ebru Yalcin & Nikhil S. Malvankar, 2021. "Structure of Geobacter pili reveals secretory rather than nanowire behaviour," Nature, Nature, vol. 597(7876), pages 430-434, September.
    2. Y. Chen & H. T. Yi & X. Wu & R. Haroldson & Y. N. Gartstein & Y. I. Rodionov & K. S. Tikhonov & A. Zakhidov & X. -Y. Zhu & V. Podzorov, 2016. "Extended carrier lifetimes and diffusion in hybrid perovskites revealed by Hall effect and photoconductivity measurements," Nature Communications, Nature, vol. 7(1), pages 1-9, November.
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    Cited by:

    1. Pilar C. Portela & Catharine C. Shipps & Cong Shen & Vishok Srikanth & Carlos A. Salgueiro & Nikhil S. Malvankar, 2024. "Widespread extracellular electron transfer pathways for charging microbial cytochrome OmcS nanowires via periplasmic cytochromes PpcABCDE," Nature Communications, Nature, vol. 15(1), pages 1-13, December.

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