[1] Doping reaction of redox-active dopants into polyaniline,
Kimihisa Yamamoto, Mami Yamada, Toyohiko Nishium,
Polymers for Advanced Technologies, 11 (2000) 710-715.

[2] Novel synthesis of electroresponsive poly(thiophenylene) through a Michael-type addition,
Kimihisa Yamamoto, Masayoshi Higuchi, Hirokazu Takai, Toyohiko Nishiumi,
Organic Letters, 3 (2001) 131-134.

[3] A novel synthetic route to redox-active oligo(thio-1,4-phenylene) derivatives via a Michael-type addition,
Kimihisa Yamamoto, Masayoshi Higuchi, Toyohiko Nishiumi, Hirokazu Takai,
Bulletin of the Chemical Society of Japan, 75 (2002) 1827-1832.

[4] Novel pi-conjugated polymers exhibiting conductive-insulator transition based on the redox of PDA units through electron communication,
Toyohiko Nishiumi, Masayoshi Higuchi, Kimihisa Yamamoto,
Electrochemistry, 70 (2002) 668-670.

[5] Electroluminescence device with novel hole-transporting materials having metal collecting sites 2,
Jun-Sang Cho, Atsushi Kimoto, Toyohiko Nishiumi, Kimihisa Yamamoto,
Journal of Photopolymer Science and Technology, 16 (2003) 295-296.

[6] Electron transfer rate on mixed valence states of Class II/III transition for N,N’-diphenyl-1,4-phenylenediamine structures as a polyaniline unit,
Toyohiko Nishiumi, Yasuhiro Nomura, Masayoshi Higuci, Kimihisa Yamamoto,
Chemical Physics Letters, 378 (2003) 18-23.

[7] pi-conjugated polymers exhibiting a novel doping based on redox of side chains,
Toyohiko Nishiumi, Masayoshi Higuchi, Kimihisa Yamamoto,
Macromolecules, 36 (2003) 6325-6332.

[8] Fluorescence switching based on the redox reaction of quinones induced by complexation with rare-earth metals,
Takahiro Kamimura, Toyohiko Nishiumi, Masayoshi Higuchi, Kimihisa Yamamoto,
Electrochemical and Solid-State Letters, 7 (2004) H9-H11.

[9] First redox polymer bearing one-step successive two-electron-transfer process based on redox potential inversion,
Toyohiko Nishiumi, Yuya Chimoto, Yuki Hagiwara, Masayoshi Higuchi, Kimihisa Yamamoto,
Macromolecules, 37 (2004) 2661-2664.

[10] The class II/III transition electron transfer on an infrared vibrational time scale for N,N’-diphenyl-1,4-phenylenediamine structures,　
Toyohiko Nishiumi, Yasuhiro Nomura, Masayoshi Higuchi, Kimihisa Yamamoto,
Journal of Physical Chemistry B, 108, (2004) 7992-8000.

[11]  A high energy rechargeable battery based on a one-step successive two-electron transfer process,
Kentaro Nishi, Toyohiko Nishiumi, Masayoshi Higuchi, Kimihisa Yamamoto,
Electrochemical and Solid-State Letters, 8 (2005) A382-A384.

[12]  Determination of the number of electrons by chronoamperometry at small electrodes,　
Toyohiko Nishiumi, Motin Md. Abdul, Koichi Aoki,
Electrochemistry Communications, 7 (2005) 1213-1217.

[14]  Voltammotry of suspensions of hollow particles with ferrocene-immobilized polyallylamine shell,
Jingyuan Chen, Koichi Aoki, Toyohiko Nishiumi, Tianbao Li,
Langmuir, 22 (2006) 10510-10514.

[15]  Asymmetric redox reactions of C3-symmetric starburst compound with six arylamines,
Motin Md. Abdul, Toyuhiko Nishiumi, Koichi Aoki,
Journal of Electroanalytical Chemistry, 601 (2007) 139-147.

[16]  Determination of Nitric Oxide by Quenching Electro-Chemiluminescence of Tris(2,2'-Bipyridyl)ruthenium in Flow Injection Analysis,
Jingyuan Chen, Masaki Miyake, Yuwu Chi, Toyohiko Nishiumi, Koichi Aoki,
Electroanalysis, 19 (2007) 181-184.

[17]  Low potential of starburst six-arylamino compounds generating conducting polymers,
Motin Md. Abdul, Toyohiko Nishiumi, Koichi Aoki,
Journal of Solid State Electrochemistry, 11 (2007) 1009-1012.

[18]  Electrochemically instantaneous reduction of conducting polyaniline-coated latex particles dispersed in acidic solution,
Han Chen, Jingyuan Chen, Koichi Aoki, Toyohiko Nishiumi,
Electrochemica ACTA, 53 (2008) 7100-7106.

[19]  Voltammetric electrodes coated with carboxyl latex particles,
Koichi Aoki, Tianbao Li, Jingyuan Chen, Toyohiko Nishiumi,
Journal of Electroanalytical Chemistry, 613 (2008) 1-8.

[20]  Electrically conducting suspensions formed by polyaniline,
Koichi Aoki, Fumihiko Kawaguchi, Toyohiko Nishiumi, Jingyuan Chen,
Electrochemica ACTA, 53 (2008) 3798-3802.

[21]  Reconstruction of gas-liquid flows using the stochastic estimation with a 16-channel electrode array,
Wei Zhou, Takao Suzuki, Toyohiko Nishiumi, Fujio Yamamoto,
Measurement Science & Technology, 19, (2008) 105402 (11pp).

[22]  Possibility of coalescence of water droplets in W/O emulsions by means of surface processes,
Junji Fukushima, Haruki Tatsuta, Naruya Ishii, Jingyuan Chen, Toyohiko Nishiumi, Koichi Aoki,
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 333 (2009) 53-58.

[23]  Spontaneous emulsification at oil|water interface by tetraalkylammonium chloride,
Koichi Aoki, Mengjuan Li, Jingyuan Chen, Toyohiko Nishiumi,
Electrochemistry Communications, Oct. 25, (2008) in press.