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Related Experiment Videos

Photoswitchable Sn-Cyt c Solid-State Devices.

Satoshi Nakamaru1, Frank Scholz2, William E Ford2

  • 1Advanced Materials Laboratories, Sony Corporation, Atsugi Technology Center No. 2, 4-16-1 Okata, Atsugi, Kanagawa, 243-0021, Japan.

Advanced Materials (Deerfield Beach, Fla.)
|April 13, 2017
PubMed
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Sn-cytochrome c layers function as efficient photoelectrochemical switches. Photoexcitation of Sn-porphyrin creates a hole-transport channel, modulating charge transfer for photocurrent generation.

Area of Science:

  • Bioinorganic chemistry
  • Photochemistry
  • Materials science

Background:

  • Electron transfer in proteins is crucial for biological energy conversion.
  • Photoactive proteins like photosystem I and bacteriorhodopsin generate photocurrents upon light exposure.

Purpose of the Study:

  • To investigate Sn-cytochrome c layers as photoelectrochemical switches.
  • To analyze photocurrent generation and charge-transfer modulation in solid-state junctions.

Main Methods:

  • Integration of Sn-cytochrome c layers into large-area solid-state junctions.
  • Irradiation with light at Soret (405 nm) and Q (535 nm) bands.
  • Measurement of photocurrents and on/off ratios.

Main Results:

Keywords:
Sn-cyt celectro-optical sensorsphotoconductorsphotoswitchingproteinsself-assembled monolayers

Related Experiment Videos

  • Sn-cytochrome c layers demonstrated reversible and efficient photoelectrochemical switching.
  • Photocurrents were observed at both 405 nm and 535 nm.
  • Current on/off ratios reached up to 25, attributed to photoexcitation-induced hole transport.

Conclusions:

  • Sn-cytochrome c layers serve as effective photoelectrochemical switches.
  • Photoexcitation of Sn-porphyrin modulates charge transfer, enabling photocurrent control.
  • This work highlights potential applications in light-driven energy conversion and sensing.