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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 64 8111 7362 543 507 275 13417

Nobuharu Iwasawa publications per year

The chart shows the history of publications by Nobuharu Iwasawa between 1980 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Nobuharu Iwasawa published across 46 years, from 1980 to 2025, averaging 6.5 papers a year. Output peaked at 25 publications in 2022. 3 of the 301 publications appeared in the last two years.

No. of publications
5 10 15 20 25
Bar chart. Horizontal axis: year, 1980 to 2025. Vertical axis: number of publications, 0 to 25. Peak 25 publications in 2022. 1980: 2 publications 1981: 2 publications 1982: 6 publications 1983: 7 publications 1984: 3 publications 1985: 6 publications 1986: 6 publications 1987: 7 publications 1988: 4 publications 1989: 5 publications 1990: 2 publications 1991: 6 publications 1992: 2 publications 1993: 4 publications 1994: 4 publications 1995: 2 publications 1996: 2 publications 1997: 7 publications 1998: 8 publications 1999: 6 publications 2000: 5 publications 2001: 4 publications 2002: 6 publications 2003: 4 publications 2004: 4 publications 2005: 5 publications 2006: 10 publications 2007: 11 publications 2008: 9 publications 2009: 6 publications 2010: 10 publications 2011: 10 publications 2012: 7 publications 2013: 8 publications 2014: 13 publications 2015: 4 publications 2016: 4 publications 2017: 10 publications 2018: 9 publications 2019: 14 publications 2020: 10 publications 2021: 10 publications 2022: 25 publications 2023: 9 publications 2024: 2 publications 2025: 1 publication
1980 2025

301 publications in total across all disciplines

View publications per year as a table
Nobuharu Iwasawa: publications per year, 1980 to 2025
Year Publications
1980 2
1981 2
1982 6
1983 7
1984 3
1985 6
1986 6
1987 7
1988 4
1989 5
1990 2
1991 6
1992 2
1993 4
1994 4
1995 2
1996 2
1997 7
1998 8
1999 6
2000 5
2001 4
2002 6
2003 4
2004 4
2005 5
2006 10
2007 11
2008 9
2009 6
2010 10
2011 10
2012 7
2013 8
2014 13
2015 4
2016 4
2017 10
2018 9
2019 14
2020 10
2021 10
2022 25
2023 9
2024 2
2025 1
Total 301
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Nobuharu Iwasawa 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 Nobuharu Iwasawa 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, 261–280 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: 275 publications — 57th percentile

57% 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
261–280 979 275
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
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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Nobuharu Iwasawa 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 Nobuharu Iwasawa 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

Nobuharu Iwasawa is a researcher affiliated with the Tokyo Institute of Technology in Japan. Their work spans the fields of Materials Science and Chemistry, with a particular focus on subfields such as Materials Chemistry, Organic Chemistry, Process Chemistry and Technology, Inorganic Chemistry, and Renewable Energy, Sustainability and the Environment.

The scientist has contributed extensively to topics including Crystallization and Solubility Studies, X-ray Diffraction in Crystallography, Catalytic C-H Functionalization Methods, Carbon dioxide utilization in catalysis, Radical Photochemical Reactions, CO2 Reduction Techniques and Catalysts, and Asymmetric Hydrogenation and Catalysis.

Iwasawa has published research in several frequent venues, with multiple publications recorded in The Cambridge Structural Database, Organometallics, Angewandte Chemie International Edition, ChemSusChem, and Bulletin of the Chemical Society of Japan.

Recent papers highlight their research scope and include:

  • Supramolecular Photocatalysis by Utilizing the Host-Guest Charge-Transfer Interaction: Visible-Light-Induced Generation of Triplet Anthracenes for [4+2] Cycloaddition Reactions (2020, Angewandte Chemie International Edition)
  • Shining Visible Light on Reductive Elimination: Acridine-Pd-Catalyzed Cross-Coupling of Aryl Halides with Carboxylic Acids (2022, Journal of the American Chemical Society)
  • Use of Isopropyl Alcohol as a Reductant for Catalytic Dehydoxylative Dimerization of Benzylic Alcohols Utilizing Ti−O Bond Photohomolysis (2021, European Journal of Organic Chemistry)
  • Visible-Light-Enabled Carboxylation of Benzyl Alcohol Derivatives with CO2 Using a Palladium/Iridium Dual Catalyst (2021, ChemSusChem)
  • Rhodium-Catalyzed Chemoselective Hydrosilylation of Nitriles to an Imine Oxidation Level Enabled by a Pincer-type Group 13 Metallylene Ligand (2020, ACS Catalysis)

The scientist collaborates frequently with several researchers, including:

  • Naoyuki Toriumi
  • Jun Takaya
  • Kohei Takahashi
  • Yanzong Lyu
  • Kazuishi Fukuda

Best Publications

  • Hydrocarboxylation of allenes with CO2 catalyzed by silyl pincer-type palladium complex.

    Jun Takaya;Nobuharu Iwasawa

  • Rhodium(I)-catalyzed carboxylation of aryl- and alkenylboronic esters with CO2.

    Kazutoshi Ukai;Masao Aoki;Jun Takaya;Nobuharu Iwasawa

  • Asymmetric Diels-Alder Reaction Catalyzed by a Chiral Titanium Reagent

    Koichi Narasaka;Nobuharu Iwasawa;Masayuki Inoue;Tohru Yamada

  • Rhodium(I)-catalyzed direct carboxylation of arenes with CO2 via chelation-assisted C-H bond activation.

    Hajime Mizuno;Jun Takaya;Nobuharu Iwasawa

  • Palladium(II)-catalyzed direct carboxylation of alkenyl C-H bonds with CO2.

    Kota Sasano;Jun Takaya;Nobuharu Iwasawa

  • Copper(I)-Catalyzed Carboxylation of Aryl- and Alkenylboronic Esters

    Jun Takaya;Satoshi Tadami;Kazutoshi Ukai;Nobuharu Iwasawa

  • Catalytic, Direct Synthesis of Bis(boronate) Compounds

    Jun Takaya;Nobuharu Iwasawa

  • Visible-Light-Driven Carboxylation of Aryl Halides by the Combined Use of Palladium and Photoredox Catalysts.

    Katsuya Shimomaki;Kei Murata;Ruben Martin;Nobuharu Iwasawa

  • Synthesis, Structure, and Catalysis of Palladium Complexes Bearing a Group 13 Metalloligand: Remarkable Effect of an Aluminum-Metalloligand in Hydrosilylation of CO2

    Jun Takaya;Nobuharu Iwasawa

  • Reactions of iodinated vinylidene complexes generated from 1-iodo-1-alkynes and W(CO)5(thf).

    Tomoya Miura;Nobuharu Iwasawa

  • Synthetic control leading to chiral compounds

    Teruaki Mukaiyama;Nobuharu Iwasawa;Rodney W. Stevens;Toru Haga

  • Efficient Synthesis of Diborylalkenes from Alkenes and Diboron by a New PSiP-Pincer Palladium-Catalyzed Dehydrogenative Borylation

    Jun Takaya;Naohiro Kirai;Nobuharu Iwasawa

  • Generation and reaction of metal-containing carbonyl ylides: tandem [3 + 2]-cycloaddition--carbene insertion leading to novel polycyclic compounds.

    Nobuharu Iwasawa;Masahide Shido;Hiroyuki Kusama

  • Boronic Esters as a System for Crystallization-Induced Dynamic Self-Assembly Equipped with an “On−Off” Switch for Equilibration

    Nobuharu Iwasawa;Hiroki Takahagi

  • Direct carboxylation of simple arenes with CO2 through a rhodium-catalyzed C–H bond activation

    Takuya Suga;Hajime Mizuno;Jun Takaya;Nobuharu Iwasawa

  • Efficient one-to-one coupling of easily available 1,3-dienes with carbon dioxide.

    Jun Takaya;Kota Sasano;Nobuharu Iwasawa

  • Pt(II)- or Au(III)-catalyzed [3+2] cycloaddition of metal-containing azomethine ylides: highly efficient synthesis of the mitosene skeleton.

    Hiroyuki Kusama;Yuichi Miyashita;Jun Takaya;Nobuharu Iwasawa

  • Generation and reaction of tungsten-containing carbonyl ylides: [3 + 2]-cycloaddition reaction with electron-rich alkenes.

    Hiroyuki Kusama;Hideaki Funami;Masahide Shido;Yoshihiro Hara

  • Asymmetric Hydrocyanation of Aldehydes Using Chiral Titanium Reagents

    Hiroyuki Minamikawa;Satoshi Hayakawa;Tohru Yamada;Nobuharu Iwasawa

  • Preparation of Substituted Cyclopentadienes through Platinum(II)‐Catalyzed Cyclization of 1,2,4‐Trienes

    Hideaki Funami;Hiroyuki Kusama;Nobuharu Iwasawa

Frequent Co-Authors

Teruaki Mukaiyama
Teruaki Mukaiyama Kitasato University
Koichi Narasaka
Koichi Narasaka University of Tokyo
Tomoya Miura
Tomoya Miura Kyoto University
Hidehiro Uekusa
Hidehiro Uekusa Tokyo Institute of Technology
Tohru Yamada
Tohru Yamada Keio University
Phil Ho Lee
Phil Ho Lee Kangwon National University
Robert S. Coleman
Robert S. Coleman The Ohio State University
Masayuki Inoue
Masayuki Inoue University of Tokyo
Yoshiaki Nishibayashi
Yoshiaki Nishibayashi University of Tokyo
Sunggak Kim
Sunggak Kim Nanyang Technological University

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