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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 55 12396 11157 931 852 241 8290

Seiichi Nakahama publications per year

The chart shows the history of publications by Seiichi Nakahama between 1965 and 2017, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Seiichi Nakahama published across 53 years, from 1965 to 2017, averaging 4.6 papers a year. Output peaked at 18 publications in 1987. 4 of the 243 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1965 to 2017. Vertical axis: number of publications, 0 to 18. Peak 18 publications in 1987. 1965: 1 publication 1966: 0 publications 1967: 1 publication 1968: 1 publication 1969: 0 publications 1970: 0 publications 1971: 1 publication 1972: 1 publication 1973: 1 publication 1974: 0 publications 1975: 4 publications 1976: 1 publication 1977: 0 publications 1978: 5 publications 1979: 3 publications 1980: 9 publications 1981: 7 publications 1982: 12 publications 1983: 10 publications 1984: 8 publications 1985: 9 publications 1986: 12 publications 1987: 18 publications 1988: 7 publications 1989: 15 publications 1990: 4 publications 1991: 9 publications 1992: 7 publications 1993: 15 publications 1994: 8 publications 1995: 12 publications 1996: 9 publications 1997: 9 publications 1998: 12 publications 1999: 10 publications 2000: 4 publications 2001: 3 publications 2002: 3 publications 2003: 2 publications 2004: 0 publications 2005: 0 publications 2006: 0 publications 2007: 1 publication 2008: 0 publications 2009: 0 publications 2010: 0 publications 2011: 0 publications 2012: 1 publication 2013: 2 publications 2014: 1 publication 2015: 1 publication 2016: 2 publications 2017: 2 publications
1965 2017

243 publications in total across all disciplines

View publications per year as a table
Seiichi Nakahama: publications per year, 1965 to 2017
Year Publications
1965 1
1966 0
1967 1
1968 1
1969 0
1970 0
1971 1
1972 1
1973 1
1974 0
1975 4
1976 1
1977 0
1978 5
1979 3
1980 9
1981 7
1982 12
1983 10
1984 8
1985 9
1986 12
1987 18
1988 7
1989 15
1990 4
1991 9
1992 7
1993 15
1994 8
1995 12
1996 9
1997 9
1998 12
1999 10
2000 4
2001 3
2002 3
2003 2
2004 0
2005 0
2006 0
2007 1
2008 0
2009 0
2010 0
2011 0
2012 1
2013 2
2014 1
2015 1
2016 2
2017 2
Total 243
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Seiichi Nakahama 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 Seiichi Nakahama 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, 241–260 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: 241 publications — 47th percentile

47% 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 1,100 241
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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Seiichi Nakahama 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 Seiichi Nakahama 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

Seiichi Nakahama is affiliated with the Tokyo Institute of Technology in Japan. Their academic work is associated with this institution, contributing to the research environment at one of the notable technical universities in the region.

There is no specific data available concerning Seiichi Nakahama's recent scientific papers, which limits details on particular research outputs, publication venues, or citation impact. Likewise, there is no information on frequent co-authors or collaborative research partners.

No records are present regarding the scientist's frequent publication venues or academic journals where their work has been predominantly published. This absence makes it difficult to specify the primary platforms for disseminating their research findings.

No book publications have been identified under Seiichi Nakahama's name, so it cannot be confirmed whether they have contributed to academic or professional books.

There is no information available about the main fields or subfields of study related to their research, which means the exact areas of their scientific expertise cannot be detailed.

Similarly, no specific main topics of work have been recorded, leaving the thematic focus of their research unspecified.

There are no awards or honors listed for Seiichi Nakahama, so details about professional recognitions or distinctions are unavailable.

Best Publications

  • Asymmetric reduction of aromatic ketones with chiral alkoxy-amineborane complexes

    Akira Hirao;Shinichi Itsuno;Seiichi Nakahama;Noboru Yamazaki

  • New solid-phase catalysts for asymmetric synthesis: cross-linked polymers containing a chiral Schiff base-zinc complex

    Shinichi Itsuno;Yoshiki Sakurai;Koichi Ito;Toshihiro Maruyama

  • Polymerization of monomers containing functional silyl groups. 5. Synthesis of new porous membranes with functional groups

    Jae Suk Lee;Akira Hirao;Seiichi Nakahama

  • Asymmetric synthesis using chirally modified borohydrides. Part 3. Enantioselective reduction of ketones and oxime ethers with reagents prepared from borane and chiral amino alcohols

    Shinichi Itsuno;Michio Nakano;Koji Miyazaki;Hirofumi Masuda

  • Catalytic Behavior of Optically Active Amino Alcohol–Borane Complex in the Enantioselective Reduction of Acetophenone Oxime O-Alkyl Ethers

    Shinichi Itsuno;Yoshiki Sakurai;Koichi Ito;Akira Hirao

  • Kinetics of Chain Coupling at Melt Interfaces

    P. Guégan;Chris Macosko;T. Ishizone;A. Hirao

  • Asymmetric reduction of aromatic ketones with the reagent prepared from (S)-(–)-2-amino-3-methyl-1,1-diphenylbutan-1-ol and borane

    Shinichi Itsuno;Koichi Ito;Akira Hirao;Seiichi Nakahama

  • Polymerization of monomers containing functional groups protected by trialkylsilyl groups. 5. Synthesis of poly(2-hydroxyethyl methacrylate) with a narrow molecular weight distribution by means of anionic living polymerization

    Akira Hirao;Hideshige Kato;Kazuo Yamaguchi;Seiichi Nakahama

  • Asymmetric reduction of aliphatic ketones with the reagent prepared from (S)-(−)-2-amino-3-methyl-1,1-diphenylbutan-1-ol and borane

    Shinichi Itsuno;Koichi Ito;Akira Hirao;Seiichi Nakahama

  • Synthesis of polymers with amino end groups. 3. Reactions of anionic living polymers with α-halo-ι-aminoalkanes with a protected amino functionality

    Kenji Ueda;Akira Hirao;Seiichi Nakahama

  • Polymerization of monomers containing functional groups protected by trialkylsilyl groups, 4. Studies on anionic living polymerization of 4‐(tert‐butyldimethylsilyloxy)styrene

    Akira Hirao;Katsuhiko Takenaka;S. Packirisamy;Kazuo Yamaguchi

  • Synthesis of Side-Chain Liquid Crystalline Homopolymers and Block Copolymers with Well-Defined Structures by Living Anionic Polymerization and Their Thermotropic Phase Behavior

    Masayuki Yamada;Akira Hirao;Seiichi Nakahama;Tsukasa Iguchi

  • Polymerization of monomers containing functional silyl groups. 7. Porous membranes with controlled microstructures

    Jae Suk Lee;Akira Hirao;Seiichi Nakahama

  • Stereospecific anionic polymerization of N, N-dialkylacrylamides

    Motoyasu Kobayashi;Shunsuke Okuyama;Takashi Ishizone;Seiichi Nakahama

  • Crystallization Behavior and Crystal Orientation of Poly(ε-caprolactone) Homopolymers Confined in Nanocylinders: Effects of Nanocylinder Dimension

    Shintaro Nakagawa;Ken-ichi Kadena;Takashi Ishizone;Shuichi Nojima

  • Protection and polymerization of functional monomers, 23. Synthesis of well‐defined poly(2‐hydroxyethyl methacrylate) by means of anionic living polymerization of protected monomers

    Hideharu Mori;Osamu Wakisaka;Akira Hirao;Seiichi Nakahama

  • Synthesis and surface characterization of hydrophilic-hydrophobic block copolymers containing poly(2,3-dihydroxypropyl methacrylate)

    Hideharu Mori;Akira Hirao;Seiichi Nakahama;Kazuhisa Senshu

  • Asymmetric reduction of aliphatic ketones with the reagent prepared from (S)-(−)-2-amino-3-methyl-1,1-diphenylbutan-1-ol and borane

    Unknown

  • PROTECTION AND POLYMERIZATION OF FUNCTIONAL MONOMERS: ANIONIC LIVING POLYMERIZATION OF PROTECTED MONOMERS

    Unknown

  • Anionic polymerizations of perfluoroalkyl methacrylates and synthesis of well-defined ABC triblock copolymers of methacrylates containing hydrophilic, hydrophobic, and perfluoroalkyl groups

    Takashi Ishizone;Kenji Sugiyama;Yasunori Sakano;Hideharu Mori

  • Protection and polymerization of functional monomers. 21. Anionic living polymerization of (2,2-dimethyl-1,3-dioxolan-4-yl)methyl methacrylate

    Hideharu Mori;Akira Hirao;Seiichi Nakahama

  • Controlled Anionic Polymerization of tert-Butyl Acrylate with Diphenylmethyl Anions in the Presence of Dialkylzinc

    Takashi Ishizone;Ken Yoshimura;and Akira Hirao;Seiichi Nakahama

Frequent Co-Authors

Akira Hirao
Akira Hirao National Taiwan University
Takashi Ishizone
Takashi Ishizone Tokyo Institute of Technology
Shinichi Itsuno
Shinichi Itsuno Toyohashi University of Technology
Junji Watanabe
Junji Watanabe Tokyo Institute of Technology
Hideharu Mori
Hideharu Mori Yamagata University
Sung Wan Kim
Sung Wan Kim University of Utah
Christopher W. Macosko
Christopher W. Macosko University of Minnesota
Tisato Kajiyama
Tisato Kajiyama Kyushu University
Toyoji Kakuchi
Toyoji Kakuchi Changchun University of Science and Technology
Jean M. J. Fréchet
Jean M. J. Fréchet University of California, Berkeley

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