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2019, Vol.48, No.12

1507-1510

A Tris-fused Donor System Composed of Two Tetrathiafulvalenes and an Extended Tetrathiafulvalene with an Anthraquinoid Spacer

Tomokazu Yamauchi ,1Minami Kato ,1Takashi Shirahata ,1,2Masaru Yao ,3 and Yohji Misaki *1,2
1Department of Applied Chemistry, Graduate School of Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
2Research Unit for Development of Organic Superconductors, and Research Unit for Power Generation and Storage Materials, Ehime University, Matsuyama, Ehime 790-8577, Japan
3Research Institute of Electrochemical Energy, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan
https://doi.org/10.1246/cl.190703

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Abstract

Derivatives of a tris-fused donor composed of two tetrathiafulvalenes (TTFs) and one extended TTF with an anthraquinoid spacer (TTFAQ) (3) were successfully synthesized. Cyclic voltammetry of the tetrakis(n-hexylthio) derivative (3Dd) indicated the coexistence of two different reduction processes from 3Dd2+ to 3Dd. A coin-type cell composed of the positive electrode incorporating the tetramethyl-3 (3Bb) showed relatively stable cycle-life performance (75% of the initial discharge capacity after 50 cycles).

figure

A tris-fused donor composed of two tetrathiafulvalenes (TTFs) and one extended TTF with an anthraquinoid spacer (3) exhibits novel redox behavior of the coexistence of two different reduction process from 32+ to 3. A coin-type cell using the tetramethyl-3 (3Bb) as a positive electrode material showed relatively stable cycle-life performance (75% of the initial discharge capacity after 50 cycles).

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