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Taka-aki Okamura

Taka-aki Okamura

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 64 8241 7481 555 519 307 10759

Taka-aki Okamura publications per year

The chart shows the history of publications by Taka-aki Okamura between 1989 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Taka-aki Okamura published across 37 years, from 1989 to 2025, averaging 8.9 papers a year. Output peaked at 29 publications in 2005. 2 of the 328 publications appeared in the last two years.

No. of publications
5 10 15 20 25
Bar chart. Horizontal axis: year, 1989 to 2025. Vertical axis: number of publications, 0 to 29. Peak 29 publications in 2005. 1989: 1 publication 1990: 2 publications 1991: 2 publications 1992: 2 publications 1993: 2 publications 1994: 0 publications 1995: 1 publication 1996: 5 publications 1997: 5 publications 1998: 10 publications 1999: 4 publications 2000: 5 publications 2001: 10 publications 2002: 16 publications 2003: 25 publications 2004: 28 publications 2005: 29 publications 2006: 28 publications 2007: 12 publications 2008: 14 publications 2009: 14 publications 2010: 16 publications 2011: 13 publications 2012: 12 publications 2013: 6 publications 2014: 6 publications 2015: 8 publications 2016: 6 publications 2017: 6 publications 2018: 4 publications 2019: 3 publications 2020: 6 publications 2021: 1 publication 2022: 6 publications 2023: 18 publications 2024: 1 publication 2025: 1 publication
1989 2025

328 publications in total across all disciplines

View publications per year as a table
Taka-aki Okamura: publications per year, 1989 to 2025
Year Publications
1989 1
1990 2
1991 2
1992 2
1993 2
1994 0
1995 1
1996 5
1997 5
1998 10
1999 4
2000 5
2001 10
2002 16
2003 25
2004 28
2005 29
2006 28
2007 12
2008 14
2009 14
2010 16
2011 13
2012 12
2013 6
2014 6
2015 8
2016 6
2017 6
2018 4
2019 3
2020 6
2021 1
2022 6
2023 18
2024 1
2025 1
Total 328
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Taka-aki Okamura 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 Taka-aki Okamura 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, 301–320 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: 307 publications — 65th percentile

65% 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
301–320 764 307
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
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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Taka-aki Okamura 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 Taka-aki Okamura 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, 64–65 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: 64 D-Index — 56th percentile

56% 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 64
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
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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Overview

Taka-aki Okamura is affiliated with Osaka University in Japan and has contributed extensively to the fields of Materials Science and Chemistry. Their research work is primarily concentrated within subfields such as Materials Chemistry, Organic Chemistry, Molecular Biology, Biomaterials, and Electrical and Electronic Engineering.

Their research encompasses several main topics, including:

  • Crystallization and Solubility Studies
  • X-ray Diffraction in Crystallography
  • Synthesis and Properties of Aromatic Compounds
  • Chemical Synthesis and Analysis
  • Supramolecular Self-Assembly in Materials
  • Luminescence and Fluorescent Materials
  • Organic Electronics and Photovoltaics

Taka-aki Okamura has published frequently in venues such as The Cambridge Structural Database, Macromolecules, Angewandte Chemie International Edition, Polymer Chemistry, and Macromolecular Rapid Communications.

Several recent publications illustrate the focus and breadth of their work:

  • Stability Enhancement of a π-Stacked Helical Structure Using Substituents of an Amino Acid Side Chain: Helix Formation via a Nucleation-Elongation Mechanism, 2022, Journal of the American Chemical Society
  • Construction of Helically Stacked π-Electron Systems in Poly(quinolylene-2,3-methylene) Stabilized by Intramolecular Hydrogen Bonds, 2020, Angewandte Chemie International Edition
  • Synthesis of helically π-stacked poly(quinolylene-2,3-methylene)s with anthracene derivatives at the chain end: intramolecular energy transfer based on the π-stacked architecture, 2022, Polymer Chemistry
  • Synthesis of an optically active polymer containing a planar phthalimide backbone by asymmetric polymerization, 2020, Polymer Chemistry
  • Folding control of a non-natural glycopeptide using saccharide-coded structural information for polypeptides, 2020, Chemical Communications

The scientist has coauthored numerous works with frequent collaborators that include Kiyotaka Onitsuka, Yusuke Tomita, Naoya Kanbayashi, Yuki Umeda, and Koichiro Nishimoto.

Best Publications

  • Syntheses, structures, near-infrared and visible luminescence, and magnetic properties of lanthanide-organic frameworks with an imidazole-containing flexible ligand.

    Zheng-Hua Zhang;You Song;Taka-aki Okamura;Yasuchika Hasegawa

  • Syntheses, structures, and luminescent and magnetic properties of novel three-dimensional lanthanide complexes with 1,3,5-benzenetriacetate.

    Zheng-Hua Zhang;Taka-Aki Okamura;Yasuchika Hasegawa;Hiroyuki Kawaguchi

  • Self-assembly of frameworks with specific topologies: construction and anion exchange properties of M3L2 architectures by tripodal ligands and silver(I) salts.

    Wei-Yin Sun;Jian Fan;Taka-aki Okamura;Jin Xie

  • Syntheses, structures, and photoluminescence properties of metal(II) halide complexes with pyridine-containing flexible tripodal ligands.

    Gang Wu;Xiao-Feng Wang;Taka-Aki Okamura;Wei-Yin Sun

  • Novel metal-organic frameworks with specific topology from new tripodal ligands: 1,3,5-tris(1-imidazolyl)benzene and 1,3-bis(1-imidazolyl)-5-(imidazol-1-ylmethyl)benzene.

    Jian Fan;Wei-Yin Sun;Taka-Aki Okamura;Wen-Xia Tang

  • Syntheses, Structures, and Properties of Two-Dimensional Alkaline Earth Metal Complexes with Flexible Tripodal Tricarboxylate Ligands

    Hui-Fang Zhu;Zheng-Hua Zhang;Wei-Yin Sun;Taka-Aki Okamura

  • Novel one-dimensional tubelike and two-dimensional polycatenated metal-organic frameworks

    Jian Fan;Hui-Fang Zhu;Taka-Aki Okamura;Wei-Yin Sun

  • Interpenetrating and Self-Penetrating Zinc(II) Complexes with Rigid Tripodal Imidazole-Containing Ligand and Benzenedicarboxylate

    Zhi Su;Jian Fan;Taka-aki Okamura;Man-Sheng Chen

  • Synthesis, Crystal Structure, and Photoluminescence of a Series of Zinc(II) Coordination Polymers with 1,4-Di(1H imidazol-4-yl)benzene and Varied Carboxylate Ligands

    Shui-Sheng Chen;Shui-Sheng Chen;Jian Fan;Taka-aki Okamura;Man-Sheng Chen

  • Syntheses, crystal structures, and magnetic properties of novel manganese(II) complexes with flexible tripodal ligand 1,3,5-tris(imidazol-1-ylmethyl)-2,4,6-trimethylbenzene.

    Wei Zhao;You Song;Taka-aki Okamura;Jian Fan

  • Effect of N-Donor Ancillary Ligands on Supramolecular Architectures of a Series of Zinc(II) and Cadmium(II) Complexes with Flexible Tricarboxylate

    Guang-Xiang Liu;Yong-Qing Huang;Qian Chu;Taka-aki Okamura

  • Metal-organic architectures of silver(I), cadmium(II), and copper(II) with a flexible tricarboxylate ligand

    Hui-Fang Zhu;Jian Fan;Taka-aki Okamura;Zheng-Hua Zhang

  • Ligand-Directed and pH-Controlled Assembly of Chiral 3d−3d Heterometallic Metal−Organic Frameworks

    Zhi Su;Jian Fan;Taka-aki Okamura;Wei-Yin Sun

  • Discrete and infinite cage-like frameworks with inclusion of anionic and neutral species and with interpenetration phenomena.

    Jian Fan;Hui-Fang Zhu;Taka-aki Okamura;Wei-Yin Sun

  • Single-crystal-to-single-crystal transformations and selective adsorption of porous copper(II) frameworks

    Man-Sheng Chen;Man-Sheng Chen;Min Chen;Satoshi Takamizawa;Taka-aki Okamura

  • Syntheses and Structures of Zinc(II), Silver(I), Copper(II), and Cobalt(II) Complexes with Imidazole-Containing Ligand: 1-(1-Imidazolyl)-4-(imidazol-1-ylmethyl)benzene

    † Hui-Fang Zhu;Jian Fan;‡ Taka-aki Okamura;Wei-Yin Sun, ,† and

  • pH Dependent Structural Diversity of Metal Complexes with 5-(4H-1,2,4-Triazol-4-yl)benzene-1,3-dicarboxylic Acid

    Min Chen;Shui-Sheng Chen;Taka-aki Okamura;Zhi Su

  • Reversible single-crystal-to-single-crystal transformation and highly selective adsorption property of three-dimensional cobalt(II) frameworks.

    Zhi Su;Min Chen;Taka-aki Okamura;Man-Sheng Chen

  • Zinc(II) and Cadmium(II) Complexes with 1,3,5-Benzenetricarboxylate and Imidazole-Containing Ligands: Structural Variation via Reaction Temperature and Solvent

    Li Luo;Kai Chen;Qing Liu;Yi Lu

  • Copper(II) and zinc(II) complexes can fix atmospheric carbon dioxide.

    Ling-Yan Kong;Zheng-Hua Zhang;Hui-Fang Zhu;Hiroyuki Kawaguchi

  • Cytochrome P-450 Model (Porphinato)(thiolato)iron(III) Complexes with Single and Double NH···S Hydrogen Bonds at the Thiolate Site

    Norikazu Ueyama;Nami Nishikawa;Yusuke Yamada;Taka-aki Okamura

Frequent Co-Authors

Norikazu Ueyama
Norikazu Ueyama Osaka University
Wei-Yin Sun
Wei-Yin Sun Nanjing University
Jian Fan
Jian Fan Soochow University
Akira Nakamura
Akira Nakamura Osaka University
Susumu Tsunasawa
Susumu Tsunasawa Osaka University
Yue Zhao
Yue Zhao Nanjing University
Yi Lu
Yi Lu University of Illinois at Urbana-Champaign
Seiki Kuramitsu
Seiki Kuramitsu Osaka University
Takafumi Ueno
Takafumi Ueno Tokyo Institute of Technology
Jin-Quan Yu
Jin-Quan Yu Scripps Research Institute

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