Facile preparation of hybrid thin films composed of spin-crossover nanoparticles and carbon nanotubes for electrical memory devices

Daisuke Tanaka; Naoki Aketa; Hirofumi Tanaka; Satoshi Horike; Minoru Fukumori; Takashi Tamaki; Tomoko Inose; Tomoki Akai; Hirotaka Toyama; Osami Sakata; Hiroo Tajiri; Takuji Ogawa

doi:10.1039/C8DT02923G

Facile preparation of hybrid thin films composed of spin-crossover nanoparticles and carbon nanotubes for electrical memory devices†

Daisuke Tanaka,

‡*^a Naoki Aketa,^a Hirofumi Tanaka,

^b Satoshi Horike,

^cde Minoru Fukumori,§^a Takashi Tamaki,¶^a Tomoko Inose,

||^a Tomoki Akai,^a Hirotaka Toyama,^a Osami Sakata,

^f Hiroo Tajiri^g and Takuji Ogawa

*^a

Author affiliations

* Corresponding authors

^a Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, Japan
E-mail: dtanaka@kwansei.ac.jp, ogawa@chem.sci.osaka-u.ac.jp

^b Department of Human Intelligence Systems, Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Kitakyushu, Japan

^c Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Institute for Advanced Study, Kyoto University, Yoshida, Sakyo-ku, Kyoto, Japan

^d Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, Japan

^e AIST-Kyoto University Chemical Energy Materials Open Innovation Laboratory (ChEM-OIL), Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan

^f Synchrotron X-ray Group, Research Center for Advanced Measurement and Characterization, National Institute for Materials Science, Sayogun, Hyogo, 679-5148, Japan

^g Japan Synchrotron Radiation Research Institute/SPring-8, Sayo-gun, Hyogo, Japan

Abstract

In this study, organic solvent-dispersible nanoparticles of an Fe^II-1,2,4-triazole spin-crossover complex were synthesized. On mixing the suspension of the spin-crossover nanoparticles with a solution of single-walled carbon nanotubes (SWCNTs), the nanoparticles were strongly adsorbed on the hydrophobic SWCNT bundles, resulting in hybrid network structures. Variable temperature DC electrical conductivity measurements of the hybrid network thin films demonstrated that the conductivities of the composite films were switched by the spin transition of the nanoparticles.

This article is part of the themed collection: New Talent: Asia-Pacific

Dalton Transactions

Facile preparation of hybrid thin films composed of spin-crossover nanoparticles and carbon nanotubes for electrical memory devices†

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Facile preparation of hybrid thin films composed of spin-crossover nanoparticles and carbon nanotubes for electrical memory devices

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