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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 61 9461 8567 682 617 194 10449

Karl Kleinermanns publications per year

The chart shows the history of publications by Karl Kleinermanns between 1981 and 2024, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Karl Kleinermanns published across 44 years, from 1981 to 2024, averaging 4.7 papers a year. Output peaked at 12 publications in 2001. 9 of the 207 publications appeared in the last two years.

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

207 publications in total across all disciplines

View publications per year as a table
Karl Kleinermanns: publications per year, 1981 to 2024
Year Publications
1981 1
1982 5
1983 2
1984 6
1985 5
1986 0
1987 6
1988 3
1989 2
1990 1
1991 4
1992 5
1993 1
1994 4
1995 8
1996 8
1997 5
1998 6
1999 5
2000 11
2001 12
2002 12
2003 5
2004 9
2005 11
2006 6
2007 6
2008 8
2009 9
2010 2
2011 4
2012 6
2013 8
2014 1
2015 0
2016 0
2017 0
2018 1
2019 1
2020 2
2021 6
2022 1
2023 0
2024 9
Total 207
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Karl Kleinermanns 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 Karl Kleinermanns 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, 181–200 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: 194 publications — 30th percentile

30% 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 1,344 194
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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Karl Kleinermanns 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 Karl Kleinermanns 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, 60–61 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: 61 D-Index — 49th percentile

49% 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 61
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

Karl Kleinermanns is affiliated with Heinrich Heine University Düsseldorf in Germany. Their research primarily spans the fields of Biochemistry, Genetics and Molecular Biology, as well as Physics and Astronomy. Within these fields, their work focuses on specific subfields including Molecular Biology, Astronomy and Astrophysics, Cellular and Molecular Neuroscience, Environmental Chemistry, and Pharmaceutical Science.

The scientist's research covers a range of topics, with notable emphasis on Origins and Evolution of Life, Photosynthetic Processes and Mechanisms, Photoreceptor and Optogenetics Research, Mitochondrial Function and Pathology, Methane Hydrates and Related Phenomena, Protein Structure and Dynamics, and Chemical Reactions and Isotopes.

Kleinermanns has published frequently in venues such as Frontiers in Microbiology, Goldschmidt2021 abstracts, Nature Ecology & Evolution, FEBS Letters, and FEBS Journal.

Recent papers include:

  • A hydrogen-dependent geochemical analogue of primordial carbon and energy metabolism (2020, Nature Ecology & Evolution)
  • The ambivalent role of water at the origins of life (2020, FEBS Letters)
  • Energy at Origins: Favorable Thermodynamics of Biosynthetic Reactions in the Last Universal Common Ancestor (LUCA) (2021, Frontiers in Microbiology)
  • Role of geochemical protoenzymes (geozymes) in primordial metabolism: specific abiotic hydride transfer by metals to the biological redox cofactor NAD + (2021, FEBS Journal)
  • The Autotrophic Core: An Ancient Network of 404 Reactions Converts H2, CO2, and NH3 into Amino Acids, Bases, and Cofactors (2021, Microorganisms)

Frequent co-authors collaborating with Kleinermanns include William Martin, Martina Preiner, Andrey do Nascimento Vieira, Harun Tüysüz, and Delfina P. Henriques Pereira. These collaborations reflect a multidisciplinary approach intersecting chemistry, biology, and geosciences.

Best Publications

  • Pairing of isolated nucleic-acid bases in the absence of the DNA backbone

    Eyal Nir;Karl Kleinermanns;Mattanjah S. de Vries;Mattanjah S. de Vries

  • HIGH RESOLUTION UV SPECTROSCOPY OF PHENOL AND THE HYDROGEN BONDED PHENOL/WATER CLUSTER

    Giel Berden;W. Leo Meerts;Michael Schmitt;Karl Kleinermanns

  • A nomenclature for Λ‐doublet levels in rotating linear molecules

    M. H. Alexander;P. Andresen;R. Bacis;R. Bersohn

  • A hydrogen-dependent geochemical analogue of primordial carbon and energy metabolism

    Martina Preiner;Kensuke Igarashi;Kamila B. Muchowska;Mingquan Yu

  • Properties of isolated DNA bases, base pairs and nucleosides examined by laser spectroscopy

    E. Nir;Ch. Plützer;K. Kleinermanns;M. de Vries

  • On the Photochemistry of Purine Nucleobases

    Eyal Nir;Karl Kleinermanns;Louis Grace;Mattanjah S. de Vries

  • Excited state dynamics of DNA bases

    Karl Kleinermanns;Dana Nachtigallová;Mattanjah S. de Vries

  • Tautomers and electronic states of jet-cooled adenine investigated by double resonance spectroscopy

    Chr. Plützer;K. Kleinermanns

  • Characterization of laser-ablated and chemically reduced silver colloids in aqueous solution by UV/VIS spectroscopy and STM/SEM microscopy

    R. Brause;H. Möltgen;K. Kleinermanns

  • Guanine tautomerism revealed by UV–UV and IR–UV hole burning spectroscopy

    Unknown

  • Pairing of the nucleobase guanine studied by IR–UV double-resonance spectroscopy and ab initio calculations

    Eyal Nir;Christoph Janzen;Petra Imhof;Karl Kleinermanns

  • Pairing of the nucleobases guanine and cytosine in the gas phase studied by IR–UV double-resonance spectroscopy and ab initio calculations

    E. Nir;Ch. Janzen;P. Imhof;K. Kleinermanns

  • IR–UV double-resonance spectroscopy of the nucleobase adenine

    Chr. Plützer;E. Nir;M. S. de Vries;K. Kleinermanns

  • Conformers of the peptides glycine-tryptophan, tryptophan-glycine and tryptophan-glycine-glycine as revealed by double resonance laser spectroscopy

    I. Hünig;K. Kleinermanns

  • Photoinduced Dynamics of Guanosine Monophosphate in Water from Broad-Band Transient Absorption Spectroscopy and Quantum-Chemical Calculations

    Venugopal Karunakaran;K. Kleinermanns;R. Improta;S. A. Kovalenko

  • Structure and vibrations of phenol(H2O)2

    M. Gerhards;K. Kleinermanns

  • Pairing of Isolated Nucleobases: Double Resonance Laser Spectroscopy of Adenine–Thymine

    Christian Plützer;Isabel Hünig;Karl Kleinermanns;Eyal Nir

  • Gas-phase FT-IR-spectra of natural amino acids

    Rolf Linder;Michael Nispel;Thomas Häber;Karl Kleinermanns

  • The structure of phenol(H2O) obtained by microwave spectroscopy

    Markus Gerhards;Michael Schmitt;Karl Kleinermanns;Wolfgang Stahl

  • The nucleobase cytosine and the cytosine dimer investigated by double resonance laser spectroscopy and ab initio calculations

    E. Nir;I. Hünig;K. Kleinermanns;M. S. de Vries

  • Phenothiazinyl rhodanylidene merocyanines for dye-sensitized solar cells.

    Tim Meyer;Daniel Ogermann;Andrea Pankrath;Karl Kleinermanns

  • Structure and vibrations of phenol(H2O)7,8 studied by infrared-ultraviolet and ultraviolet-ultraviolet double-resonance spectroscopy and ab initio theory

    Unknown

Frequent Co-Authors

Jürgen Wolfrum
Jürgen Wolfrum Heidelberg University
Mattanjah S. de Vries
Mattanjah S. de Vries University of California, Santa Barbara
William Martin
William Martin Heinrich Heine University Düsseldorf
W. Leo Meerts
W. Leo Meerts Radboud University
Christof Schulz
Christof Schulz University of Duisburg-Essen
Siegfried Hess
Siegfried Hess Technical University of Berlin
Harald Tschesche
Harald Tschesche Bielefeld University
Sergey A. Kovalenko
Sergey A. Kovalenko Humboldt-Universität zu Berlin
Peter Fischer
Peter Fischer Lawrence Berkeley National Laboratory
Martin Kröger
Martin Kröger ETH Zurich

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