Masa-aki Haga

Participating A02

Affiliation

Faculty of Applied Chemistry, Chuo University

Position

Professor

Contact

mhaga@kc.chuo-u.ac.jp

HP

http://www.chem.chuo-u.ac.jp/~iimc/

Research Project

Development of Molecular Memristor Devices by Heterojunction Based on Metal Complexes

Abstract

We will construct surface heterojunction structures based on coordination network films and a proton conduction polymer toward molecular memristor devices.  Since the heterojunction possesses surface asymmetric nanostructure, proton gradient by pKa values and potential gradient are introduced at the interface between two molecular component units. We have fabricated the coordination asymmetric heterolayer films by use of coordination bond between phosphonate groups on an ITO electrode. We will focus on the following subjects: (1) memoristor behavior of heterojunction composed of two different materials such as proton conducting metal-organic frameworks and metal oxides.  We will also investigate how the rectification at the heterojunction by energy gap affects the proton-conduction between two coordination network film with different pKa values.  (2) Photo charge storage devices on the hetero-junction films based on the luminescent Ru complex. (3) K⁺ ion gating on Prussian blue nanocrystals on an ITO modified with redox-active Ru complex.

Research Areas

Surface coordination chemistry, Molecular device, Hetero-junction, Layer-by-layer films

Keywords

Redox-active complexes. Layer-by-layer growth, Memristor, Charge storage, electrochemistry, two-terminal device