Modulation of Photoinduced Transmembrane Currents in a Fullerene-Doped Freestanding Lipid Bilayer by a Lateral Bias

Teng Ma; Xingyao Feng; Takeshi Ohori; Ryusuke Miyata; Daisuke Tadaki; Daichi Yamaura; Takafumi Deguchi; Maki Komiya; Kensaku Kanomata; Fumihiko Hirose; Michio Niwano; Ayumi Hirano-Iwata

doi:10.1021/acsomega.9b02336

Modulation of Photoinduced Transmembrane Currents in a Fullerene-Doped Freestanding Lipid Bilayer by a Lateral Bias

ACS Omega. 2019 Oct 23;4(19):18299-18303. doi: 10.1021/acsomega.9b02336. eCollection 2019 Nov 5.

Authors

Affiliations

¹ Advanced Institute for Materials Research (WPI-AIMR) and Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.
² Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa 992-8510, Japan.
³ Kansei Fukushi Research Institute, Tohoku Fukushi University, 6-149-1 Kunimi-ga-oka, Aoba-ku, Sendai, Miyagi 989-3201, Japan.

Abstract

We report on a novel lipid bilayer system, in which a lateral bias can be applied in addition to a conventional transmembrane voltage. Freestanding bilayer lipid membranes (BLMs) doped with [6,6]-phenyl-C₆₁-butyric acid methyl ester (PCBM) were formed in a microaperture, around which metal electrodes were deposited. Using this system, it was possible to modulate and amplify photoinduced transmembrane currents by applying a lateral bias along the BLM. The results indicate that the microfabricated Si chip with embedded electrodes is a promising platform for the formation of transistor-like devices based on PCBM-doped BLMs and have potential for use in a wide variety of nanohybrid devices.