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Hirotaka Ihara

Hirotaka Ihara

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 55 12248 11028 918 839 455 9727

Hirotaka Ihara publications per year

The chart shows the history of publications by Hirotaka Ihara between 1975 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Hirotaka Ihara published across 52 years, from 1975 to 2026, averaging 9.3 papers a year. Output peaked at 25 publications in 2012. 5 of the 483 publications appeared in the last two years.

No. of publications
5 10 15 20 25
Bar chart. Horizontal axis: year, 1975 to 2026. Vertical axis: number of publications, 0 to 25. Peak 25 publications in 2012. 1975: 1 publication 1976: 0 publications 1977: 0 publications 1978: 0 publications 1979: 1 publication 1980: 2 publications 1981: 1 publication 1982: 0 publications 1983: 3 publications 1984: 3 publications 1985: 3 publications 1986: 10 publications 1987: 4 publications 1988: 4 publications 1989: 4 publications 1990: 3 publications 1991: 8 publications 1992: 12 publications 1993: 9 publications 1994: 9 publications 1995: 7 publications 1996: 7 publications 1997: 6 publications 1998: 4 publications 1999: 8 publications 2000: 7 publications 2001: 2 publications 2002: 11 publications 2003: 8 publications 2004: 16 publications 2005: 21 publications 2006: 14 publications 2007: 12 publications 2008: 21 publications 2009: 23 publications 2010: 17 publications 2011: 20 publications 2012: 25 publications 2013: 15 publications 2014: 20 publications 2015: 21 publications 2016: 20 publications 2017: 18 publications 2018: 12 publications 2019: 10 publications 2020: 12 publications 2021: 16 publications 2022: 16 publications 2023: 7 publications 2024: 5 publications 2025: 4 publications 2026: 1 publication
1975 2026

483 publications in total across all disciplines

View publications per year as a table
Hirotaka Ihara: publications per year, 1975 to 2026
Year Publications
1975 1
1976 0
1977 0
1978 0
1979 1
1980 2
1981 1
1982 0
1983 3
1984 3
1985 3
1986 10
1987 4
1988 4
1989 4
1990 3
1991 8
1992 12
1993 9
1994 9
1995 7
1996 7
1997 6
1998 4
1999 8
2000 7
2001 2
2002 11
2003 8
2004 16
2005 21
2006 14
2007 12
2008 21
2009 23
2010 17
2011 20
2012 25
2013 15
2014 20
2015 21
2016 20
2017 18
2018 12
2019 10
2020 12
2021 16
2022 16
2023 7
2024 5
2025 4
2026 1
Total 483
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Hirotaka Ihara 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 Hirotaka Ihara 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, 441–460 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: 455 publications — 85th percentile

85% 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
441–460 270 455
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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Hirotaka Ihara 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 Hirotaka Ihara 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: 55 D-Index — 33rd percentile

33% 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 55
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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Overview

Hirotaka Ihara is affiliated with Kumamoto University in Japan and has contributed extensively to the fields of materials science and chemistry. Their research output spans 62 publications in materials science and 46 publications in chemistry, with a focus on several specialized subfields.

Their subfields of study include materials chemistry, organic chemistry, spectroscopy, biomaterials, and biomedical engineering. These areas reflect a broad engagement with both the fundamental and applied aspects of chemical and materials processes.

Key research topics covered by their work are:

  • Supramolecular Self-Assembly in Materials
  • Luminescence and Fluorescent Materials
  • Synthesis and Properties of Aromatic Compounds
  • Covalent Organic Framework Applications
  • Mesoporous Materials and Catalysis
  • Analytical Chemistry and Chromatography
  • Microfluidic and Capillary Electrophoresis Applications

Their recent publications illustrate the range and focus of their research interests:

  • Preparation of porous carbon nanomaterials and their application in sample preparation: A review, 2021, TrAC Trends in Analytical Chemistry
  • Synthesis strategies of covalent organic frameworks: An overview from nonconventional heating methods and reaction media, 2022, Green Energy & Environment
  • Composite materials based on covalent organic frameworks for multiple advanced applications, 2023, Exploration
  • Remarkable enhancement of thermal stability of epoxy resin through the incorporation of mesoporous silica micro-filler, 2021, Heliyon
  • Preparation of Vortex Porous Graphene Chiral Membrane for Enantioselective Separation, 2020, Analytical Chemistry

Hirotaka Ihara has frequently published in several scientific venues, notably:

  • Chemical Communications (4 publications)
  • SSRN Electronic Journal (4 publications)
  • Chirality (3 publications)
  • Nanomaterials (3 publications)
  • Colloids and Surfaces A Physicochemical and Engineering Aspects (3 publications)

The scientist has collaborated often with peers in their field. Frequent co-authors include Makoto Takafuji, Yutaka Kuwahara, Shoji Nagaoka, Nanami Hano, and Reïko Oda, indicating sustained research partnerships.

Best Publications

  • Preparation of poly(1-vinylimidazole)-grafted magnetic nanoparticles and their application for removal of metal ions

    Makoto Takafuji;Shunichi Ide;Hirotaka Ihara;Zhenghe Xu

  • Induction of Strong and Tunable Circularly Polarized Luminescence of Nonchiral, Nonmetal, Low‐Molecular‐Weight Fluorophores Using Chiral Nanotemplates

    Taisei Goto;Yutaka Okazaki;Masahiro Ueki;Yutaka Kuwahara

  • Functional Organogel Based on a Salicylideneaniline Derivative with Enhanced Fluorescence Emission and Photochromism

    Pengchong Xue;Pengchong Xue;Ran Lu;Guojun Chen;Yuan Zhang

  • FORMATION OF HELICAL SUPER STRUCTURE FROM SINGLE-WALLED BILAYERS BY AMPHIPHILES WITH OLIGO-L-GLUTAMIC ACID-HEAD GROUP

    Kimiho Yamada;Hirotaka Ihara;Toshio Ide;Takanori Fukumoto

  • Chirality control of self-assembling organogels from a lipophilic L-glutamide derivative with metal chlorides

    Hirotaka Ihara;Toshihiko Sakurai;Taisuke Yamada;Toshitaka Hashimoto

  • New poly(ionic liquid)-grafted silica multi-mode stationary phase for anion-exchange/reversed-phase/hydrophilic interaction liquid chromatography

    Hongdeng Qiu;Hongdeng Qiu;Abul K. Mallik;Makoto Takafuji;Shengxiang Jiang

  • Self-assembled fibrillar networks through highly oriented aggregates of porphyrin and pyrene substituted by dialkyl L-glutamine in organic media

    Takashi Sagawa;Sachiko Fukugawa;Taisuke Yamada;Hirotaka Ihara

  • Structures and binding energies of benzene-methane and benzene-benzene complexes : an ab initio SCF/MP2 study

    Shigeyoshi Sakaki;Kenji Kato;Tomonori Miyazaki;Yasuo Musashi

  • Preparation of carbon/TiO2 microsphere composites from cellulose/TiO2 microsphere composites and their evaluation

    Shoji Nagaoka;Yuu Hamasaki;Shin Ichiro Ishihara;Masanori Nagata

  • Synthesis strategies of covalent organic frameworks: An overview from nonconventional heating methods and reaction media

    Unknown

  • Solvent dependence of helix stability in aromatic oligoamide foldamers

    Ting Qi;Victor Maurizot;Hiroki Noguchi;Thiraporn Charoenraks

  • Helical superstructure of conductive polymers as created by electrochemical polymerization by using synthetic lipid assemblies as a template.

    Tsukasa Hatano;Ah Hyun Bae;Masayuki Takeuchi;Norifumi Fujita

  • Investigation of π-π and ion-dipole interactions on 1-allyl-3-butylimidazolium ionic liquid-modified silica stationary phase in reversed-phase liquid chromatography

    Hongdeng Qiu;Makoto Takafuji;Xia Liu;Shengxiang Jiang

  • A new imidazolium-embedded C18 stationary phase with enhanced performance in reversed-phase liquid chromatography.

    Hongdeng Qiu;Abul K. Mallik;Makoto Takafuji;Xia Liu

  • Preparation of porous carbon nanomaterials and their application in sample preparation: A review

    Yu Wang;Yu Wang;Jia Chen;Hirotaka Ihara;Ming Guan

  • Composite materials based on covalent organic frameworks for multiple advanced applications

    Unknown

  • Facile synthesis of high-density poly(octadecyl acrylate)-grafted silica for reversed-phase high-performance liquid chromatography by surface-initiated atom transfer radical polymerization.

    Abul K. Mallik;M. Mizanur Rahman;Miklos Czaun;Makoto Takafuji

  • Kinetics of helix-handedness inversion: folding and unfolding in aromatic amide oligomers.

    Nicolas Delsuc;Takahiro Kawanami;Julien Lefeuvre;Atsuomi Shundo

  • PHASE SEPARATION AND REACTIVITY CHANGES OF PHENYL ESTER SUBSTRATE AND IMIDAZOLE CATALYST IN THE DIALKYLAMMONIUM BILAYER MEMBRANE.

    Toyoki Kunitake;Hirotaka Ihara;Yoshio Okahata

  • Effect of photopolymerization on the morphology of helical supramolecular assemblies

    Hirotaka Ihara;Makoto Takafuji;Chuichi Hirayama;David F. O'Brien

  • New strategy for drastic enhancement of selectivity via chemical modification of counter anions in ionic liquid polymer phase

    Hongdeng Qiu;Hongdeng Qiu;Makoto Takafuji;Tsuyoshi Sawada;Xia Liu

  • New surface-confined ionic liquid stationary phases with enhanced chromatographic selectivity and stability by co-immobilization of polymerizable anion and cation pairs

    Hongdeng Qiu;Abul K. Mallik;Tsuyoshi Sawada;Makoto Takafuji

  • Conformational change in DNA induced by cationic bilayer membranes

    Tetsuyuki Akao;Takanori Fukumoto;Hirotaka Ihara;Akio Ito

Frequent Co-Authors

Hongdeng Qiu
Hongdeng Qiu Lanzhou Institute of Chemical Physics
Mohammed M. Rahman
Mohammed M. Rahman King Abdulaziz University
Brice Kauffmann
Brice Kauffmann University of Bordeaux
Ivan Huc
Ivan Huc Ludwig-Maximilians-Universität München
Toyoki Kunitake
Toyoki Kunitake Kyushu University
Pengchong Xue
Pengchong Xue Tianjin University
Ran Lu
Ran Lu Jilin University
Thierry Buffeteau
Thierry Buffeteau University of Bordeaux
Shigeyoshi Sakaki
Shigeyoshi Sakaki Kyoto University
Meifang Zhu
Meifang Zhu Donghua University

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