World's Best Scientists 2026 revealed!
Issei Harada

Issei Harada

D-Index & Metrics

Chemistry

D-Index
50
Citations
9403
World Ranking
14339
National Ranking
1115

Issei Harada 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 Issei Harada 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: 121 publications — 6th percentile

6% of scientists in this discipline score the same or lower.

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

Issei Harada 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 Issei Harada 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: 50 D-Index — 21st percentile

21% of scientists in this discipline score the same or lower.

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

Overview

Issei Harada is affiliated with Tohoku University in Japan. Their academic profile does not currently list any recent papers, frequent co-authors, or common publication venues, which suggests a limited publicly available record of publications at this time.

No specific fields or subfields of study have been documented for Issei Harada. Similarly, there are no listed main topics of research work or book publications attributed to this scientist.

There are no recorded awards associated with Issei Harada, which indicates that any recognitions they may have received have not been publicly noted or documented in the accessible data.

Given the absence of detailed publication or collaboration information, this overview reflects the current publicly available knowledge about Issei Harada's academic profile and professional affiliations.

Best Publications

  • Vibrational Spectra and Structure of Polyaniline

    Y. Furukawa;F. Ueda;Y. Hyodo;I. Harada

  • Interpretation of the doublet at 850 and 830 cm-1 in the Raman spectra of tyrosyl residues in proteins and certain model compounds.

    Mwindaace N. Siamwiza;Richard C. Lord;Michael C. Chen;Tadahisa Takamatsu

  • Vibrational key bands and electrical conductivity of polythiophene

    Y Furukawa;M Akimoto;I Harada

  • Spectroscopic studies on doped polyacetylene and β-carotene

    Issei Harada;Yukio Furukawa;Mitsuo Tasumi;Hideki Shirakawa

  • Raman spectra of polypyrrole and its 2,5-13C-substituted and C-deuterated analogues in doped and undoped states

    Yukio Furukawa;S. Tazawa;Y. Fujii;I. Harada

  • Tryptophan Raman bands sensitive to hydrogen bonding and side-chain conformation

    Takashi Miura;Hideo Takeuchi;Issei Harada

  • Characterization of individual tryptophan side chains in proteins using Raman spectroscopy and hydrogen-deuterium exchange kinetics

    Takashi Miura;Hideo Takeuchi;Issei Harada

  • Origin of the doublet at 1360 and 1340 cm -1 in the Raman spectra of tryptophan and related compounds

    Issei Harada;Takashi Miura;Hideo Takeuchi

  • Electronic spectra and structures of polyiodide chain complexes

    Masagi Mizuno;Jiro Tanaka;Issei Harada

  • Normal coordinate analysis of the indole ring

    Hideo Takeuchi;Issei Harada

  • Correlation between vibrational spectra and electrical conductivity of polythiophene

    M. Akimoto;Y. Furukawa;H. Takeuchi;I. Harada

  • Vibrational spectra and structure of polyaniline and related compounds

    Issei Harada;Yukio Furukawa;Fumitaka Ueda

  • Normal Vibrations and Intermolecular Forces of Crystalline Benzene and Naphthalene

    Issei Harada;Takehiko Shimanouchi

  • Effects of hydrogen bonding on the tyrosine Raman bands in the 1300-1150 cm-1 region

    Hideo Takeuchi;Noriko Watanabe;Yasuhiro Satoh;Issei Harada

  • Molecular force fields of s-trans-1,3-butadiene and the second stable conformer.

    Yukio Furukawa;Yukio Furukawa;Hideo Takeuchi;Hideo Takeuchi;Issei Harada;Issei Harada;Mitsuo Tasumi

  • Vibrational spectra of polyaniline and its 15N- and 2H-substituted derivatives in as-polymerized, alkali-treated and reduced states

    Y. Furukawa;T. Hara;Y. Hyodo;I. Harada

  • RAMAN SPECTRA OF POLYACETYLENE AND HIGHLY CONDUCTING IODINE-DOPED POLYACETYLENE

    Issei Harada;Mitsuo Tasumi;Hideki Shirakawa;Sakuji Ikeda

  • Interaction of adenosine 5'-triphosphate with Mg2+: vibrational study of coordination sites by use of 18O-labeled triphosphates

    Hideo. Takeuchi;Hiroshi. Murata;Issei. Harada

  • One-dimensional conjugated carbyne - synthesis and properties

    K. Akagi;M. Nishiguchi;H. Shirakawa;Y. Furukawa

  • Far‐Infrared Spectra of Crystalline Benzene at 138°K and Intermolecular Forces

    Issei Harada;Takehiko Shimanouchi

Frequent Co-Authors

Hideo Takeuchi
Hideo Takeuchi Tohoku University
Takehiko Shimanouchi
Takehiko Shimanouchi University of Tokyo
Mitsuo Tasumi
Mitsuo Tasumi University of Tokyo
Haruo Kuroda
Haruo Kuroda Tokyo University of Science
Hiro-o Hamaguchi
Hiro-o Hamaguchi National Yang Ming Chiao Tung University
Tatsuo Miyazawa
Tatsuo Miyazawa University of Tokyo
Koichi Kikuchi
Koichi Kikuchi Tokyo Metropolitan University
Yoshimasa Kyogoku
Yoshimasa Kyogoku Osaka University
Fuyuhiko Inagaki
Fuyuhiko Inagaki Hokkaido University
Kazuo Akagi
Kazuo Akagi Ritsumeikan University

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