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Masa-aki Haga

Masa-aki Haga

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 54 12835 11549 969 885 203 8143

Masa-aki Haga publications per year

The chart shows the history of publications by Masa-aki Haga between 1973 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Masa-aki Haga published across 53 years, from 1973 to 2025, averaging 4 papers a year. Output peaked at 11 publications in 2008. 4 of the 212 publications appeared in the last two years.

No. of publications
2 4 6 8 10
Bar chart. Horizontal axis: year, 1973 to 2025. Vertical axis: number of publications, 0 to 11. Peak 11 publications in 2008. 1973: 1 publication 1974: 2 publications 1975: 2 publications 1976: 1 publication 1977: 2 publications 1978: 0 publications 1979: 1 publication 1980: 1 publication 1981: 0 publications 1982: 0 publications 1983: 3 publications 1984: 1 publication 1985: 2 publications 1986: 3 publications 1987: 1 publication 1988: 3 publications 1989: 5 publications 1990: 1 publication 1991: 6 publications 1992: 4 publications 1993: 2 publications 1994: 10 publications 1995: 2 publications 1996: 8 publications 1997: 4 publications 1998: 5 publications 1999: 3 publications 2000: 8 publications 2001: 5 publications 2002: 2 publications 2003: 5 publications 2004: 1 publication 2005: 8 publications 2006: 8 publications 2007: 4 publications 2008: 11 publications 2009: 6 publications 2010: 5 publications 2011: 7 publications 2012: 8 publications 2013: 5 publications 2014: 5 publications 2015: 7 publications 2016: 7 publications 2017: 9 publications 2018: 8 publications 2019: 7 publications 2020: 3 publications 2021: 2 publications 2022: 0 publications 2023: 4 publications 2024: 2 publications 2025: 2 publications
1973 2025

212 publications in total across all disciplines

View publications per year as a table
Masa-aki Haga: publications per year, 1973 to 2025
Year Publications
1973 1
1974 2
1975 2
1976 1
1977 2
1978 0
1979 1
1980 1
1981 0
1982 0
1983 3
1984 1
1985 2
1986 3
1987 1
1988 3
1989 5
1990 1
1991 6
1992 4
1993 2
1994 10
1995 2
1996 8
1997 4
1998 5
1999 3
2000 8
2001 5
2002 2
2003 5
2004 1
2005 8
2006 8
2007 4
2008 11
2009 6
2010 5
2011 7
2012 8
2013 5
2014 5
2015 7
2016 7
2017 9
2018 8
2019 7
2020 3
2021 2
2022 0
2023 4
2024 2
2025 2
Total 212
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Masa-aki Haga 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 Masa-aki Haga 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, 201–220 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: 203 publications — 34th percentile

34% 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 1,281 203
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
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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Masa-aki Haga 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 Masa-aki Haga 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, 54–55 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: 54 D-Index — 31st percentile

31% 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 54
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
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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Research.com Recognitions

  • 2015 - Fellow of the American Association for the Advancement of Science (AAAS)

Overview

Masa-aki Haga is affiliated with Chuo University in Japan. Their research spans multiple fields including chemistry, materials science, and engineering, with a particular focus on inorganic chemistry, materials chemistry, electrical and electronic engineering, and electrochemistry.

Their work extensively covers topics related to metal-organic frameworks (MOFs), electrocatalysts for energy conversion, and electrochemical analysis and applications. Other key research areas include conducting polymers, advanced battery technologies, polyoxometalates synthesis and applications, and molecular junctions and nanostructures.

Frequent coauthors in their publications include Mitsutoshi Ide, Nattapol Ma, Sarawoot Impeng, Sareeya Bureekaew, and Naoki Morozumi. The scientist has published in a range of venues, notably Electrochimica Acta, which features two of their articles, the Journal of the American Chemical Society, ACS Applied Electronic Materials, Inorganic Chemistry, and ChemElectroChem.

Recent publications by Masa-aki Haga include:

  • Photoexcited Anhydrous Proton Conductivity in Coordination Polymer Glass, 2023, Journal of the American Chemical Society
  • Three-phase electrochemistry of a highly lipophilic neutral ru-complex having tridentate bis(benzimidazolate)pyridine ligands, 2020, Electrochimica Acta
  • Regulation of Ion Transport in Prussian Blue MOF Films by a Ru-Complex Primer Nanolayer on an ITO Electrode and Its Energy Storage Application, 2021, ACS Applied Electronic Materials
  • Redox-Active Ruthenium-Organic Polyhedra with Tunable Surface Functionality and Porosities, 2024, Inorganic Chemistry
  • Electrochemical proton-coupled electron transfer processes to form neutral radicals of azaphenalenes: pKa values of protonated radicals, 2023, Electrochimica Acta

In 2015, Masa-aki Haga was honored as a Fellow of the American Association for the Advancement of Science (AAAS).

Best Publications

  • A photo-hydrogen-evolving molecular device driving visible-light-induced EDTA-reduction of water into molecular hydrogen.

    Hironobu Ozawa;Masa Aki Haga;Ken Sakai

  • Catechol-quinone redox series involving bis(bipyridine)ruthenium(II) and tetrakis(pyridine)ruthenium(II)

    Masaaki Haga;Elaine S. Dodsworth;A. B. P. Lever

  • Highly phosphorescent iridium complexes containing both tridentate bis(benzimidazolyl)-benzene or -pyridine and bidentate phenylpyridine: synthesis, photophysical properties, and theoretical study of Ir-bis(benzimidazolyl)benzene complex.

    Shinya Obara;Masumi Itabashi;Fumio Okuda;Satoru Tamaki

  • Construction of highly ordered lamellar nanostructures through Langmuir-Blodgett deposition of molecularly thin titania nanosheets tens of micrometers wide and their excellent dielectric properties.

    Kosho Akatsuka;Masa Aki Haga;Yasuo Ebina;Minoru Osada

  • Synthesis and protonation-deprotonation reactions of ruthenium(II) complexes containing 2, 2′-bibenzimidazole and related ligands

    Masa-Aki Haga

  • Proton-induced switching of metal-metal interactions in dinuclear ruthenium and osmium complexes bridged by 2,2'-bis(2-pyridyl)bibenzimidazole

    Masaaki Haga;Tomoaki Ano;Kenji Kano;Shin-Ichi Yamabe

  • Fabrication of Densely Packed Titania Nanosheet Films on Solid Surface by Use of Langmuir−Blodgett Deposition Method without Amphiphilic Additives

    Masaru Muramatsu;Kosho Akatsuka;Yasuo Ebina;Kezhi Wang

  • Syntheses and phosphorescent properties of blue emissive iridium complexes with tridentate pyrazolyl ligands.

    Lifen Yang;Fumio Okuda;Katsuaki Kobayashi;Koichi Nozaki

  • Proton-Induced Tuning of Electrochemical and Photophysical Properties in Mononuclear and Dinuclear Ruthenium Complexes Containing 2,2'-Bis(benzimidazol-2-yl)-4,4'-bipyridine: Synthesis, Molecular Structure, and Mixed-Valence State and Excited-State Properties.

    Masa-aki Haga;Md. Meser Ali;Shiro Koseki;Kaori Fujimoto

  • Syntheses, characterization, and photo-hydrogen-evolving properties of tris(2,2′-bipyridine)ruthenium(II) derivatives tethered to a cis-Pt(II)Cl2 unit: insights into the structure–activity relationship

    Hironobu Ozawa;Yuki Yokoyama;Masa Aki Haga;Ken Sakai

  • Syntheses and properties of emissive iridium(III) complexes with tridentate benzimidazole derivatives.

    Tomona Yutaka;Shinya Obara;Satoshi Ogawa;Koichi Nozaki

  • Fabrication and Placement of a Ring Structure of Nanoparticles by a Laser-Induced Micronanobubble on a Gold Surface

    Sho Fujii;Katsuhiko Kanaizuka;Shoichi Toyabe;Katsuaki Kobayashi

  • Fabrication and functions of surface nanomaterials based on multilayered or nanoarrayed assembly of metal complexes

    Masa-aki Haga;Katsuaki Kobayashi;Keiichi Terada

  • Bis(dioxolene)(bipyridine)ruthenium redox series

    A. B. P. Lever;Pamela R. Auburn;Elaine S. Dodsworth;Masa Aki. Haga

  • Tuning of redox potentials by introducing a cyclometalated bond to bis-tridentate ruthenium(II) complexes bearing bis(N-methylbenzimidazolyl)benzene or -pyridine ligands.

    Wen Wen Yang;Yu Wu Zhong;Shinpei Yoshikawa;Jiang Yang Shao

  • Prospects and Problems of Single Molecule Information Devices

    Yasuo Wada;Masaru Tsukada;Masamichi Fujihira;Kazumi Matsushige

  • Spectrophotometric and voltammetric characterization of complexes of bis(2,2'-bipyridine)(2,2'-bibenzimidazole)ruthenium and -osmium in oxidation states II, III, and IV in acetonitrile−water mixtures

    Alan M. Bond;Masa aki Haga

  • Molecular design of a proton-induced molecular switch based on rod-shaped Ru dinuclear complexes with bis-tridentate 2,6-bis(benzimidazol-2-yl)pyridine derivatives

    Masa-aki Haga;Tomohiro Takasugi;Akihiro Tomie;Masahide Ishizuya

  • Binuclear complexes of ruthenium and osmium bridged by 2,2'-bibenzimidazolate: preparation, electrochemistry, and formation of mixed-valence complexes

    Masaaki Haga;Takeko Matsumura-Inoue;Shinichi Yamabe

  • Proton‐Induced Switching of Electron Transfer Pathways in Dendrimer‐Type Tetranuclear RuOs3 Complexes

    Masa-aki Haga;Md. Meser Ali;Ryuichi Arakawa

Frequent Co-Authors

A. B. P. Lever
A. B. P. Lever York University
Ken Sakai
Ken Sakai Kyushu University
Ryuichi Arakawa
Ryuichi Arakawa Kansai University
Hideo Nagashima
Hideo Nagashima Kyushu University
Alan M. Bond
Alan M. Bond Monash University
Takayoshi Sasaki
Takayoshi Sasaki National Institute for Materials Science
Peter Broekmann
Peter Broekmann University of Bern
Richard Robson
Richard Robson University of Melbourne
Tomiki Ikeda
Tomiki Ikeda Chuo University
Yasuo Ebina
Yasuo Ebina National Institute for Materials Science

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