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Self-Assembled Biohybrid: A Living Material To Bridge the Functions between Electronics and Multilevel Biological

Yixin Zhang1, Le You1, Pu Deng2

  • 1Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States.

ACS Applied Materials & Interfaces
|July 6, 2022
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel biohybrid electronic material using bioreduced graphene oxide (B-rGO) to link exoelectrogens with electronics. This living hybrid enhances microbial fuel cell applications and enables new bioelectronic component designs.

Keywords:
bioelectronicscyanobacteriashewanellasupercapacitorthylakoid membrane

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Area of Science:

  • Bioelectronics
  • Materials Science
  • Microbiology

Background:

  • Exoelectrogens naturally produce conductive nanomaterials by reducing extracellular electron acceptors.
  • These nanomaterials integrate with exoelectrogen cell bodies, offering unique bioelectronic properties.

Purpose of the Study:

  • To design and fabricate a biohybrid electronic material using bioreduced graphene oxide (B-rGO).
  • To leverage exoelectrogens' metabolic functions for microbial fuel cell applications.
  • To explore biohybridization for constructing novel electronic components.

Main Methods:

  • Utilized bioreduced graphene oxide (B-rGO) as a linker between exoelectrogens and external electronics.
  • Integrated exoelectrogen communities into a living hybrid material.
  • Replaced exoelectrogens with photosynthetic organelles and cells to test biohybridization broadly.

Main Results:

  • The biohybrid material effectively translates exoelectrogens' metabolic functions for microbial fuel cell applications.
  • The material serves as a building block for integrating other microorganisms into electronic components.
  • Replacing exoelectrogens with photosynthetic components resulted in 4- and 8-fold improvements in photocurrent.

Conclusions:

  • Demonstrated a biologically driven strategy for fabricating and assembling electronic materials.
  • The biohybridization approach allows precise probing and modulation of biofunctions via electronic inputs/outputs.
  • This strategy offers a pathway to revolutionize the design and manufacturing of next-generation bioelectronics.