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Yoshio Okamoto

Yoshio Okamoto

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Chemistry
Japan
2026

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 93 1759 1564 92 88 691 37907

Yoshio Okamoto publications per year

The chart shows the history of publications by Yoshio Okamoto between 1955 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Yoshio Okamoto published across 72 years, from 1955 to 2026, averaging 10 papers a year. Output peaked at 37 publications in 2001. 3 of the 722 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1955 to 2026. Vertical axis: number of publications, 0 to 37. Peak 37 publications in 2001. 1955: 2 publications 1956: 1 publication 1957: 5 publications 1958: 5 publications 1959: 0 publications 1960: 0 publications 1961: 0 publications 1962: 0 publications 1963: 0 publications 1964: 0 publications 1965: 0 publications 1966: 0 publications 1967: 1 publication 1968: 3 publications 1969: 2 publications 1970: 4 publications 1971: 3 publications 1972: 3 publications 1973: 0 publications 1974: 4 publications 1975: 6 publications 1976: 3 publications 1977: 6 publications 1978: 10 publications 1979: 7 publications 1980: 4 publications 1981: 8 publications 1982: 4 publications 1983: 12 publications 1984: 14 publications 1985: 12 publications 1986: 16 publications 1987: 16 publications 1988: 16 publications 1989: 16 publications 1990: 14 publications 1991: 12 publications 1992: 10 publications 1993: 18 publications 1994: 22 publications 1995: 26 publications 1996: 23 publications 1997: 25 publications 1998: 33 publications 1999: 28 publications 2000: 33 publications 2001: 37 publications 2002: 28 publications 2003: 33 publications 2004: 28 publications 2005: 13 publications 2006: 30 publications 2007: 19 publications 2008: 8 publications 2009: 5 publications 2010: 7 publications 2011: 10 publications 2012: 7 publications 2013: 8 publications 2014: 8 publications 2015: 7 publications 2016: 6 publications 2017: 1 publication 2018: 1 publication 2019: 5 publications 2020: 4 publications 2021: 3 publications 2022: 9 publications 2023: 10 publications 2024: 5 publications 2025: 2 publications 2026: 1 publication
1955 2026

722 publications in total across all disciplines

View publications per year as a table
Yoshio Okamoto: publications per year, 1955 to 2026
Year Publications
1955 2
1956 1
1957 5
1958 5
1959 0
1960 0
1961 0
1962 0
1963 0
1964 0
1965 0
1966 0
1967 1
1968 3
1969 2
1970 4
1971 3
1972 3
1973 0
1974 4
1975 6
1976 3
1977 6
1978 10
1979 7
1980 4
1981 8
1982 4
1983 12
1984 14
1985 12
1986 16
1987 16
1988 16
1989 16
1990 14
1991 12
1992 10
1993 18
1994 22
1995 26
1996 23
1997 25
1998 33
1999 28
2000 33
2001 37
2002 28
2003 33
2004 28
2005 13
2006 30
2007 19
2008 8
2009 5
2010 7
2011 10
2012 7
2013 8
2014 8
2015 7
2016 6
2017 1
2018 1
2019 5
2020 4
2021 3
2022 9
2023 10
2024 5
2025 2
2026 1
Total 722
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Yoshio Okamoto publications per year - data summary

  • Yoshio Okamoto, a Chemistry scholar from Nagoya University, has 722 publications recorded across 72 years, from 1955 to 2026.
  • The oldest publication on record dates to 1955 and the most recent to 2026.
  • The most productive year is 2001, with 37 publications.
  • The least productive years with any output are 1956, 1967, 2017, 2018 and others, with 1 publication each.
  • 9 of the 72 years in the span carry no publications at all (1959, 1960, 1961, 1962 and others).
  • The rate of publication averages 10.0 papers per year over the whole span, or 11.5 per year counting only the 63 years with at least one publication.
  • The last 5 years on the chart (2022-2026) hold 27 publications, 4% of the career total.
  • Split into equal eras - 1955-1978: 58 publications (2.4 per year); 1979-2002: 434 publications (18.1 per year); 2003-2026: 230 publications (9.6 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

Yoshio Okamoto 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 Yoshio Okamoto sits on this spectrum.

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 681–700 publications, is where this scientist sits. 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
61–80 publications 1,295+

This scientist: 691 publications — 95th percentile

95% of scientists in this discipline score the same or lower.

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

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623
121–140 918
141–160 1,218
161–180 1,350
181–200 1,344
201–220 1,281
221–240 1,216
241–260 1,100
261–280 979
281–300 939
301–320 764
321–340 643
341–360 628
361–380 522
381–400 459
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73 691
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
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Yoshio Okamoto publication distribution in Chemistry in 2026 - data summary

  • The chart plots the publication count of all 17,934 Chemistry scientists ranked by Research.com in 2026, grouped into 63 ranges running from 61–80 to 1,295+ publications.
  • Yoshio Okamoto, a Chemistry scholar from Nagoya University, records 691 publications - the 95th percentile of the discipline.
  • 95% of ranked Chemistry scientists score the same or lower than Yoshio Okamoto, and about 5% score higher.
  • The median of the discipline falls in the 241–260 publications range, and Yoshio Okamoto ranks above the median.
  • The most crowded range is 161–180 publications, holding 1,350 scientists (8% of the field).
  • 77% of the field sits in the lowest quarter of the value range (up to 361–380 publications), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 1,295 publications or more, 100 scientists in all (<1% of the field).

Yoshio Okamoto 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 Yoshio Okamoto sits on this spectrum.

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 92–93 D-Index, is where this scientist sits. 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
40–41 D-Index 159+

This scientist: 93 D-Index — 90th percentile

90% of scientists in this discipline score the same or lower.

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

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612
44–45 808
46–47 776
48–49 835
50–51 861
52–53 872
54–55 933
56–57 1,051
58–59 930
60–61 882
62–63 834
64–65 731
66–67 775
68–69 683
70–71 646
72–73 561
74–75 501
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235
90–91 185
92–93 192 93
94–95 155
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
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Yoshio Okamoto D-index placement in Chemistry in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 17,934 Chemistry scientists ranked by Research.com in 2026, grouped into 61 ranges running from 40–41 to 159+ D-Index.
  • Yoshio Okamoto, a Chemistry scholar from Nagoya University, records 93 D-Index - the 90th percentile of the discipline.
  • 90% of ranked Chemistry scientists score the same or lower than Yoshio Okamoto, and about 10% score higher.
  • The median of the discipline falls in the 62–63 D-Index range, and Yoshio Okamoto ranks above the median.
  • The most crowded range is 56–57 D-Index, holding 1,051 scientists (6% of the field).
  • 70% of the field sits in the lowest quarter of the value range (up to 70–71 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 159 D-Index or more, 98 scientists in all (<1% of the field).

Research.com Recognitions

  • 2026 - Research.com Chemistry in Japan Leader Award
  • 2025 - Research.com Chemistry in Japan Leader Award
  • 2022 - Research.com Chemistry in Japan Leader Award

Overview

Yoshio Okamoto is affiliated with Nagoya University in Japan. The researcher's work primarily spans the fields of Materials Science and Physics and Astronomy, with a substantial focus on subfields including Materials Chemistry, Electronic, Optical and Magnetic Materials, Condensed Matter Physics, Electrical and Electronic Engineering, and Atomic and Molecular Physics and Optics.

The research topics frequently explored include Rare-earth and actinide compounds, Advanced Condensed Matter Physics, Magnetic and transport properties of perovskites and related materials, Thermal Expansion and Ionic Conductivity, Iron-based superconductors research, Multiferroics and related materials, and Ferroelectric and Piezoelectric Materials.

Selected recent publications highlight diverse contributions:

  • Structural phase transition and giant negative thermal expansion in pyrophosphate Zn2-xMgxP2O7, 2021, Applied Physics Letters
  • Magnetization process of the breathing pyrochlore magnet CuInCr4S8 in ultrahigh magnetic fields up to 150 T, 2020, Physical review. B./Physical review. B
  • Sol-gel synthesis of doped Cu2V2O7 fine particles showing giant negative thermal expansion, 2020, AIP Advances
  • High-mobility carriers induced by chemical doping in the candidate nodal-line semimetal CaAgP, 2020, Physical review. B./Physical review. B
  • Real spin and pseudospin topologies in the noncentrosymmetric topological nodal-line semimetal CaAgAs, 2020, Physical review. B./Physical review. B

Okamoto has collaborated extensively with several coauthors, notably:

  • K. Takenaka (39 publications)
  • Naoyuki Katayama (17 publications)
  • Yasunori Yokoyama (13 publications)
  • Daigorou Hirai (12 publications)
  • Y. Kadowaki (8 publications)

The researcher has published prolifically in several journals, with frequent appearances in:

  • Journal of the Physical Society of Japan (12 publications)
  • Physical review. B./Physical review. B (10 publications)
  • Applied Physics Letters (9 publications)
  • arXiv (Cornell University) (9 publications)
  • Applied Physics Express (3 publications)

Best Publications

  • Synthetic helical polymers: conformation and function.

    Tamaki Nakano;Yoshio Okamoto

  • Polysaccharide Derivatives for Chromatographic Separation of Enantiomers.

    Yoshio Okamoto;Eiji Yashima

  • Memory of macromolecular helicity assisted by interaction with achiral small molecules

    Eiji Yashima;Katsuhiro Maeda;Yoshio Okamoto

  • Resolution by high-performance liquid chromatography using polysaccharide carbamates and benzoates as chiral stationary phases

    Yoshio Okamoto;Yuriko Kaida

  • Chiral HPLC for efficient resolution of enantiomers

    Yoshio Okamoto;Tomoyuki Ikai

  • Optically active poly(triphenylmethyl methacrylate) with one-handed helical conformation

    Yoshio Okamoto;Koichi Suzuki;Koji Ohta;Koichi Hatada

  • Efficient Separation of Enantiomers Using Stereoregular Chiral Polymers

    Jun Shen;Yoshio Okamoto;Yoshio Okamoto

  • Chirality Assignment of Amines and Amino Alcohols Based on Circular Dichroism Induced by Helix Formation of a Stereoregular Poly((4-carboxyphenyl)acetylene) through Acid−Base Complexation

    Eiji Yashima;Teruyuki Matsushima;Yoshio Okamoto

  • Structure control of polysaccharide derivatives for efficient separation of enantiomers by chromatography

    Tomoyuki Ikai;Yoshio Okamoto

  • Novel packing material for optical resolution: (+)-poly(triphenylmethyl methacrylate) coated on macroporous silica gel

    Yoshio Okamoto;Shiro Honda;Ichiro Okamoto;Heimei Yuki

  • Optically Active Polymers for Chiral Separation

    Chiyo Yamamoto;Yoshio Okamoto

  • Chiral Discrimination on Polysaccharides Derivatives

    Eiji Yashima;Yoshio Okamoto

  • Chromatographic resolution. 7. Useful chiral packing materials for high-performance liquid chromatographic resolution of enantiomers: phenylcarbamates of polysaccharides coated on silica gel

    Unknown

  • Poly((4-carboxyphenyl)acetylene) as a Probe for Chirality Assignment of Amines by Circular Dichroism

    Eiji Yashima;Teruaki Matsushima;Yoshio Okamoto

  • Substituent Constants for Aromatic Substitution1-3

    Herbert C. Brown;Y. Okamoto

  • Resolution of racemic compounds by optically active poly(triphenylmethyl methacrylate)

    Heimei Yuki;Yoshio Okamoto;Ichiro Okamoto

  • Efficient Lewis Acid-Catalyzed Stereocontrolled Radical Polymerization of Acrylamides

    Yutaka Isobe;Daigo Fujioka;Shigeki Habaue;Yoshio Okamoto

  • Asymmetric polymerization of triphenylmethyl methacrylate leading to a one-handed helical polymer: mechanism of polymerization

    Tamaki Nakano;Yoshio Okamoto;Koichi Hatada

  • RAFT Polymerization of N-Isopropylacrylamide in the Absence and Presence of Y(OTf)3: Simultaneous Control of Molecular Weight and Tacticity

    Biswajit Ray;Yutaka Isobe;Kozo Matsumoto;Shigeki Habaue

  • Living and Highly Isotactic Polymerization of Methyl Methacrylate by t-C4H9MgBr in Toluene

    Koichi Hatada;Koichi Ute;Katsuji Tanaka;Yoshio Okamoto

  • Xanthate-Mediated Radical Polymerization of N-Vinylpyrrolidone in Fluoroalcohols for Simultaneous Control of Molecular Weight and Tacticity

    Decheng Wan;Kotaro Satoh;Masami Kamigaito;Yoshio Okamoto

Frequent Co-Authors

Eiji Yashima
Eiji Yashima Nagoya University
Masami Kamigaito
Masami Kamigaito Nagoya University
Koichi Hatada
Koichi Hatada Osaka University
Kotaro Satoh
Kotaro Satoh Tokyo Institute of Technology
Bezhan Chankvetadze
Bezhan Chankvetadze Tbilisi State University
Katsuhiro Maeda
Katsuhiro Maeda Kanazawa University
Fritz Vögtle
Fritz Vögtle University of Bonn
Toshifumi Satoh
Toshifumi Satoh Hokkaido University
Gottfried Blaschke
Gottfried Blaschke University of Münster
Tatsuki Kitayama
Tatsuki Kitayama Osaka University

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