[17p-M_B104-1~11] 12.3 Functional Materials and Novel Devices

4:00 PM - 4:15 PM JST(7:00 AM - 7:15 AM UTC)

[17p-M_B104-8] Photoelectrochemical bioimaging for redox molecules using hematite

〇Hiroya Abe^1,2, Tomoyuki Ogawa², Kosuke Ino², Tatsuo Yoshinobu², Hitoshi Shiku² (1.FRIS, Tohoku Univ., 2.Tohoku Univ.)

Keywords:

Photocatalyst,Bioimaging

Biological imaging is essential for understanding biological information, and electrochemical approaches can visualize redox-active, biology-related molecules around biological tissues. However, acquiring information in microscale spaces typically requires microelectrode fabrication techniques. In this study, we established a photoelectrochemical microscope using a visible-light-responsive Fe₂O₃ (hematite) photoelectrode, achieving a simple configuration that requires neither dense wiring nor photolithography by employing a single electrode line. Using photocurrents generated by localized illumination, we demonstrated bioimaging of redox indicators and hydrogen peroxide.