World's Best Scientists 2026 revealed!
Seiichi Tokura

Seiichi Tokura

D-Index & Metrics

Chemistry

D-Index
63
Citations
13767
World Ranking
8447
National Ranking
571

Seiichi Tokura publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where Seiichi Tokura sits on this spectrum.

61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61 publications 1,295+

This scientist: 222 publications — 40th percentile

40% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

Seiichi Tokura D-index placement in Chemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Seiichi Tokura sits on this spectrum.

40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40 D-Index 159+

This scientist: 63 D-Index — 54th percentile

54% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

Overview

Seiichi Tokura is affiliated with Hokkaido University in Japan and has a research focus that spans several interconnected fields including engineering, materials science, and biochemistry, genetics, and molecular biology. Their work primarily addresses topics within biomedical engineering and biomaterials, with subfields extending into molecular biology, rheumatology, and genetics.

The scientist's research contributions include studies on bone tissue engineering materials, electrospun nanofibers for biomedical applications, and investigations into enzymes such as chitinases and chitosanases. Additional topics covered in their work are bone and dental protein studies, connective tissue disorders research, collagen extraction and characterization, and marine biology and environmental chemistry.

Recent publications by Seiichi Tokura include the following papers:

  • Phosphorylated chitin increased bone formation when implanted into rat calvaria with the Ti-device, 2020, Bio-Medical Materials and Engineering
  • Discovery of Ti-Binding Abilities of Phosphorylated-Chitin and -Collagen, 2020, Journal of Hard Tissue Biology
  • Binding of collagen gene products with titanium oxide, 2020, The Journal of Biochemistry

Frequent coauthors collaborating with Seiichi Tokura have included:

  • Song Qin
  • Kimitoshi Yagami
  • Toshitake Furusawa
  • Masaaki Kurasaki
  • Yoshinori Kuboki

The preferred outlets for publication reflect specialization in biomedical and materials science disciplines, with key venues being:

  • Bio-Medical Materials and Engineering
  • Journal of Hard Tissue Biology
  • The Journal of Biochemistry

Best Publications

  • Impregnation of silver nanoparticles into bacterial cellulose for antimicrobial wound dressing

    Thawatchai Maneerung;Seiichi Tokura;Ratana Rujiravanit

  • Sulfated chitin and chitosan as novel biomaterials

    R. Jayakumar;N. Nwe;S. Tokura;H. Tamura

  • Novel carboxymethyl derivatives of chitin and chitosan materials and their biomedical applications

    R. Jayakumar;M. Prabaharan;S.V. Nair;S. Tokura

  • Immunological activity of chitin and its derivatives

    K. Nishimura;S. Nishimura;N. Nishi;I. Saiki

  • Effects of chitin and its derivatives on the proliferation and cytokine production of fibroblasts in vitro

    Takashi Mori;Masahiro Okumura;Mitsunobu Matsuura;Keisuke Ueno

  • Regioselective syntheses of sulfated polysaccharides: specific anti-HIV-1 activity of novel chitin sulfates

    Shin-Ichiro Nishimura;Hideaki Kai;Katsuhiko Shinada;Takashi Yoshida

  • Preparation of Chitin Hydrogel Under Mild Conditions

    Hiroshi Tamura;Hideaki Nagahama;Seiichi Tokura

  • Feasibility of polysaccharide hybrid materials for scaffolds in cartilage tissue engineering: evaluation of chondrocyte adhesion to polyion complex fibers prepared from alginate and chitosan.

    Norimasa Iwasaki;Shin-Tarou Yamane;Tokifumi Majima;Yasuhiko Kasahara

  • Chitosan coated cotton fiber: preparation and physical properties

    X.D Liu;N Nishi;S Tokura;N Sakairi

  • Chitosan-alginate multilayer beads for gastric passage and controlled intestinal release of protein

    Anil K Anal;Deepak Bhopatkar;Seiichi Tokura;Hiroshi Tamura

  • Stimulation of cytokine production in mice using deacetylated chitin.

    Keiko Nishimura;Chiaki Ishihara;Shigeki Ukei;Seiichi Tokura

  • Molecular Weight Dependent Antimicrobial Activity by Chitosan

    Seiichi Tokura;Keisuke Ueno;Satoshi Miyazaki;Norio Nishi

  • Studies on Chitin VIII. Some Properties of Water Soluble Chitin Derivatives

    Seiichi Tokura;Norio Nishi;Akihiro Tsutsumi;Oyin Somorin

  • Adjuvant activity of chitin derivatives in mice and guinea-pigs.

    Keiko Nishimura;Shin-ichiro Nishimura;Norio Nishi;Fumio Numata

  • Inhibition of the metastasis of murine malignant melanoma by synthetic polymeric peptides containing core sequences of cell-adhesive molecules

    Ikuo Saiki;Joji Iida;Jun Murata;Ryu Ogawa

  • Macrophage activation with multi-porous beads prepared from partially deacetylated chitin

    Keiko Nishimura;Shin-Ichiro Nishimura;Hiroshi Seo;Norio Nishi

  • Preparative methods of phosphorylated chitin and chitosan--an overview.

    R.a Jayakumar;N.a Selvamurugan;S.V.a Nair;S.b Tokura

  • Highly phosphorylated derivatives of chitin, partially deacetylated chitin and chitosan as new functional polymers: preparation and characterization☆

    Norio Nishi;Akira Ebina;Shin-ichiro Nishimura;Akihiro Tsutsumi

  • Novel chitosan-based hyaluronan hybrid polymer fibers as a scaffold in ligament tissue engineering.

    Tadanao Funakoshi;Tokifumi Majima;Norimasa Iwasaki;Shintaro Yamane

  • Bioactive chitin derivatives. Activation of mouse-peritoneal macrophages by O-(carboxymethyl)chitins

    Shin-Ichiro Nishimura;Norio Nishi;Seiichi Tokura;Keiko Nishimura

Frequent Co-Authors

Norio Nishi
Norio Nishi Hokkaido University
Shin-Ichiro Nishimura
Shin-Ichiro Nishimura Hokkaido University
Ichiro Azuma
Ichiro Azuma Hokkaido University
Hiroshi Tamura
Hiroshi Tamura Juntendo University
Ikuo Saiki
Ikuo Saiki University of Toyama
Keisuke Kurita
Keisuke Kurita Seikei University
Pitt Supaphol
Pitt Supaphol Chulalongkorn University
Susumu Nishimura
Susumu Nishimura University of Tsukuba
Yoshinori Kuboki
Yoshinori Kuboki Hokkaido University
Yoshihiro Shigemasa
Yoshihiro Shigemasa Tottori University

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