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Takashi Karatsu

Takashi Karatsu

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 48 15409 13893 1209 1097 162 6677

Takashi Karatsu publications per year

The chart shows the history of publications by Takashi Karatsu between 1981 and 2024, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Takashi Karatsu published across 44 years, from 1981 to 2024, averaging 3.9 papers a year. Output peaked at 10 publications in 2008. 8 of the 170 publications appeared in the last two years.

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

170 publications in total across all disciplines

View publications per year as a table
Takashi Karatsu: publications per year, 1981 to 2024
Year Publications
1981 2
1982 0
1983 2
1984 0
1985 2
1986 2
1987 2
1988 6
1989 5
1990 1
1991 3
1992 5
1993 0
1994 7
1995 2
1996 1
1997 3
1998 3
1999 3
2000 4
2001 4
2002 2
2003 7
2004 4
2005 8
2006 4
2007 5
2008 10
2009 4
2010 9
2011 7
2012 7
2013 8
2014 4
2015 3
2016 2
2017 7
2018 1
2019 2
2020 2
2021 7
2022 2
2023 5
2024 3
Total 170
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Takashi Karatsu 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 Takashi Karatsu 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, 161–180 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: 162 publications — 18th percentile

18% 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 1,350 162
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
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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Takashi Karatsu 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 Takashi Karatsu 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, 48–49 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: 48 D-Index — 16th percentile

16% 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 48
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
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

Takashi Karatsu is a researcher affiliated with Chiba University in Japan, actively contributing to the fields of Materials Science, Chemistry, and Engineering with 14 publications in each area. Their work spans several specialized subfields including Organic Chemistry, Materials Chemistry, Electrical and Electronic Engineering, Biomedical Engineering, and Inorganic Chemistry.

The scientist's research focuses on multiple advanced topics related to polymer science and photochemical reactions. These topics include:

  • Photopolymerization techniques and applications
  • Advanced Polymer Synthesis and Characterization
  • Luminescence and Fluorescent Materials
  • Organic Light-Emitting Diodes Research
  • Radical Photochemical Reactions
  • Liquid Crystal Research Advancements
  • Nanomaterials and Printing Technologies

Takashi Karatsu has published notable research articles in a variety of scientific journals. Selected recent papers include:

  • "Characterization and ammonolysis behavior of poly(isosorbide carbonate)-based copolymers," 2024, Polymer Journal
  • "Synthesis of heat-resistant living polymer particles by one-step reversible addition-fragmentation chain transfer precipitation polymerization of styrene and N-phenylmaleimide," 2024, Polymer
  • "Polymer Photonic Crystals Prepared by Triblock Copolymerization-induced in situ Microphase Separation," 2022, Chemistry Letters
  • "Persistent room temperature blue phosphorescence from racemic crystals of 1,1-diphenylmethanol derivatives," 2020, Journal of Photochemistry and Photobiology A Chemistry
  • "Construction of insulating layers on conductive nickel-plated core particles by thermal fusion of heterocoagulated polymer shell particles," 2022, Colloids and Surfaces A Physicochemical and Engineering Aspects

Frequent coauthors in Takashi Karatsu's work include T. Taniguchi, Daisuke Aoki, Kaname Ishigaki, Michinari Kohri, and Keiki Kishikawa. These collaborations reflect ongoing research partnerships that have contributed to multiple published studies.

The researcher has published repeatedly in several specialist journals, with multiple works appearing in:

  • Journal of Photopolymer Science and Technology
  • Journal of Photochemistry and Photobiology A Chemistry
  • Chemistry Letters
  • Polymer Journal
  • Polymer

Best Publications

  • Design amphiphilic dipolar π-systems for stimuli-responsive luminescent materials using metastable states

    Shiki Yagai;Satoru Okamura;Yujiro Nakano;Mitsuaki Yamauchi

  • Transformation from H- to J-aggregated perylene bisimide dyes by complexation with cyanurates.

    Shiki Yagai;Shiki Yagai;Tomohiro Seki;Takashi Karatsu;Akihide Kitamura

  • Hierarchical organization of photoresponsive hydrogen-bonded rosettes.

    Shiki Yagai;Toshiharu Nakajima;Keiki Kishikawa;Shigeo Kohmoto

  • Photocontrollable self-assembly.

    Shiki Yagai;Takashi Karatsu;Akihide Kitamura

  • Self‐Organization of Hydrogen‐Bonding Naphthalene Chromophores into J‐type Nanorings and H‐type Nanorods: Impact of Regioisomerism

    Shiki Yagai;Yusaku Goto;Xu Lin;Takashi Karatsu

  • Mechanochromic Luminescence Based on Crystal-to-Crystal Transformation Mediated by a Transient Amorphous State

    Shiki Yagai;Tomohiro Seki;Hiroaki Aonuma;Kohsuke Kawaguchi

  • Control over hierarchy levels in the self-assembly of stackable nanotoroids.

    Shiki Yagai;Mitsuaki Yamauchi;Ai Kobayashi;Takashi Karatsu

  • Supramolecularly Engineered Perylene Bisimide Assemblies Exhibiting Thermal Transition from Columnar to Multilamellar Structures

    Shiki Yagai;Mari Usui;Tomohiro Seki;Haruno Murayama

  • Toroidal Nanoobjects from Rosette Assemblies of Melamine‐Linked Oligo(p‐phenyleneethynylene)s and Cyanurates

    Shiki Yagai;Sankarapillai Mahesh;Yoshihiro Kikkawa;Kanako Unoike

  • Reversible transformation between rings and coils in a dynamic hydrogen-bonded self-assembly.

    Shiki Yagai;Shun Kubota;Hikaru Saito;Kanako Unoike

  • Novel insights into photoisomerization of olefins

    Tatsuo Arai;Takashi Karatsu;Hiroaki Misawa;Yasunao Kuriyama

  • Diversification of self-organized architectures in supramolecular dye assemblies.

    Shiki Yagai;Tetsuro Kinoshita;Masatsugu Higashi;Keiki Kishikawa

  • Light-induced unfolding and refolding of supramolecular polymer nanofibres.

    Bimalendu Adhikari;Yuki Yamada;Mitsuaki Yamauchi;Kengo Wakita

  • Photoresponsive Self-Assembly and Self-Organization of Hydrogen-Bonded Supramolecular Tapes

    Shiki Yagai;Tomoyuki Iwashima;Keiki Kishikawa;Shoichiro Nakahara

  • Nebulin and N-WASP Cooperate to Cause IGF-1–Induced Sarcomeric Actin Filament Formation

    Kazunori Takano;Haruko Watanabe-Takano;Shiro Suetsugu;Shiro Suetsugu;Souichi Kurita

  • Phototriggered self-assembly of hydrogen-bonded rosette.

    Shiki Yagai;Toshiharu Nakajima;Takashi Karatsu;Ken-ichi Saitow

  • Supramolecular Nanoribbons and Nanoropes Generated from Hydrogen-Bonded Supramolecular Polymers Containing Perylene Bisimide Chromophores

    Shiki Yagai;Yuki Monma;Norimasa Kawauchi;Takashi Karatsu

  • Solution photochemistry of poly(dialkylsilanes): a new class of photoresists

    J. Michl;J. W. Downing;T. Karatsu;A. J. McKinley

  • Gelation‐Assisted Control over Excitonic Interaction in Merocyanine Supramolecular Assemblies

    Shiki Yagai;Shiki Yagai;Manabu Ishii;Takashi Karatsu;Akihide Kitamura

  • Photoreactive helical nanoaggregates exhibiting morphology transition on thermal reconstruction.

    Mitsuaki Yamauchi;Tomonori Ohba;Takashi Karatsu;Shiki Yagai

  • Rational Design of Nanofibers and Nanorings through Complementary Hydrogen-Bonding Interactions of Functional π Systems

    Shiki Yagai;Shiki Yagai;Hiroaki Aonuma;Yoshihiro Kikkawa;Shun Kubota

Frequent Co-Authors

Shiki Yagai
Shiki Yagai Chiba University
Shu Seki
Shu Seki Kyoto University
Ayyappanpillai Ajayaghosh
Ayyappanpillai Ajayaghosh CSIR – National Institute for Interdisciplinary Science and Technology
Hiroaki Misawa
Hiroaki Misawa Hokkaido University
Robert D. Miller
Robert D. Miller Stanford University
Akinori Saeki
Akinori Saeki Osaka University
Josef Michl
Josef Michl University of Colorado Boulder
Hiroko Yamada
Hiroko Yamada Nara Institute of Science and Technology
Takanori Fukushima
Takanori Fukushima Tokyo Institute of Technology
Iwao Yamazaki
Iwao Yamazaki Hokkaido University

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