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Ernst-Walter Knapp

Ernst-Walter Knapp

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 55 12141 10929 895 800 191 10704

Ernst-Walter Knapp publications per year

The chart shows the history of publications by Ernst-Walter Knapp between 1973 and 2024, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Ernst-Walter Knapp published across 52 years, from 1973 to 2024, averaging 3.9 papers a year. Output peaked at 11 publications in 2005. 1 of the 202 publications appeared in the last two years.

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

202 publications in total across all disciplines

View publications per year as a table
Ernst-Walter Knapp: publications per year, 1973 to 2024
Year Publications
1973 1
1974 1
1975 0
1976 4
1977 2
1978 2
1979 1
1980 1
1981 1
1982 3
1983 2
1984 10
1985 6
1986 2
1987 1
1988 2
1989 1
1990 2
1991 1
1992 2
1993 3
1994 0
1995 3
1996 10
1997 4
1998 3
1999 1
2000 6
2001 6
2002 3
2003 4
2004 6
2005 11
2006 8
2007 7
2008 11
2009 5
2010 10
2011 8
2012 9
2013 3
2014 10
2015 6
2016 8
2017 6
2018 2
2019 0
2020 1
2021 2
2022 0
2023 0
2024 1
Total 202
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Ernst-Walter Knapp 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 Ernst-Walter Knapp 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: 191 publications — 29th percentile

29% 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 1,344 191
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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Ernst-Walter Knapp 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 Ernst-Walter Knapp 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

Ernst-Walter Knapp is affiliated with Freie Universität Berlin in Germany. Their research spans several scientific disciplines, evident in the diversity of their publication record and subfields of study.

Their recent publications include two notable papers: "Quantification of Local Electric Field Changes at the Active Site of Cytochrome c Oxidase by Fourier Transform Infrared Spectroelectrochemical Titrations" published in 2021 in Frontiers in Chemistry, and "Moments of Gaussian Distributions for Small and Large Sample Sizes Revisited" published in 2024 in Mathematics and Statistics.

Knapp's collaboration network consists of frequent co-authors such as Federico Baserga, Jovan Dragelj, Jacek Kozuch, Hendrik Mohrmann, and Sven T. Stripp, each contributing to at least one joint publication.

The research topics covered in Knapp's work reflect an interdisciplinary approach, including:

  • Spectroscopy and Quantum Chemical Studies
  • Photoreceptor and Optogenetics Research
  • Photosynthetic Processes and Mechanisms
  • Bayesian Methods and Mixture Models
  • Statistical Distribution Estimation and Applications

These topics illustrate the scientist's involvement in both experimental and theoretical studies, linking molecular biology and physical chemistry with advanced statistical and computational methods.

Knapp's research areas further encompass the following subfields of study:

  • Atomic and Molecular Physics, and Optics
  • Cellular and Molecular Neuroscience
  • Molecular Biology
  • Artificial Intelligence
  • Statistics and Probability

Publishing in Frontiers in Chemistry and Mathematics and Statistics highlights the interdisciplinary nature of their work, bridging chemistry and mathematical sciences.

Best Publications

  • Multivalency as a chemical organization and action principle.

    Carlo Fasting;Christoph A. Schalley;Marcus Weber;Oliver Seitz

  • Lineshapes of molecular aggregates, exchange narrowing and intersite correlation

    E.W. Knapp

  • Protein dynamics. Mössbauer spectroscopy on deoxymyoglobin crystals.

    F. Parak;F. Parak;E.W. Knapp;E.W. Knapp;D. Kucheida;D. Kucheida

  • Electrostatic models for computing protonation and redox equilibria in proteins.

    Ullmann Gm;Knapp Ew

  • α-Helices direct excitation energy flow in the Fenna–Matthews–Olson protein

    Frank Müh;Mohamed El Amine Madjet;Julia Adolphs;Ayjamal Abdurahman;Ayjamal Abdurahman

  • A consistent picture of protein dynamics.

    F Parak;E W Knapp

  • Energetics of a possible proton exit pathway for water oxidation in photosystem II.

    Hiroshi Ishikita;Wolfram Saenger;Bernhard Loll;Jacek Biesiadka

  • Calculated pH-dependent population and protonation of carbon-monoxy-myoglobin conformers.

    Björn Rabenstein;Ernst-Walter Knapp

  • Optimizing pKA computation in proteins with pH adapted conformations

    Gernot Kieseritzky;Ernst-Walter Knapp

  • Analysis of optical spectra from single crystals of Rhodopseudomonas viridis reaction centers

    Ernst Walter Knapp;Sighart Fischer;Wolfgang Zinth;M. Sander

  • Recent advances in anion–π interactions

    Arturo Robertazzi;Florian Krull;Ernst-Walter Knapp;Patrick Gamez

  • Oxygen-evolving Mn cluster in photosystem II: the protonation pattern and oxidation state in the high-resolution crystal structure.

    Artur Galstyan;Arturo Robertazzi;Ernst Walter Knapp

  • Redox potential of quinones in both electron transfer branches of photosystem I.

    Hiroshi Ishikita;Ernst-Walter Knapp

  • Metal Ligand Aromatic Cation–π Interactions in Metalloproteins: Ligands Coordinated to Metal Interact with Aromatic Residues

    Snežana D. Zarić;Dragan M. Popović;Ernst-Walter Knapp

  • Empirical Conversion of pKa Values between Different Solvents and Interpretation of the Parameters: Application to Water, Acetonitrile, Dimethyl Sulfoxide, and Methanol

    Emanuele Rossini;Emanuele Rossini;Art D. Bochevarov;Ernst Walter Knapp

  • Protein dynamics from Moessbauer spectra. The temperature dependence

    E. W. Knapp;S. F. Fischer;F. Parak

  • Multivalenz als chemisches Organisations- und Wirkprinzip

    Carlo Fasting;Christoph A. Schalley;Marcus Weber;Oliver Seitz

  • How photosynthetic reaction centers control oxidation power in chlorophyll pairs P680, P700, and P870

    Hiroshi Ishikita;Wolfram Saenger;Jacek Biesiadka;Bernhard Loll

  • Accurate pKa Determination for a Heterogeneous Group of Organic Molecules

    Marcel Schmidt am Busch;Ernst-Walter Knapp

  • The concentration dependence of the vibrational linewidth and shift in liquid binary mixtures: An analytical model

    E. W. Knapp;S. F. Fischer

  • How to guarantee optimal stability for most representative structures in the Protein Data Bank.

    Ugo Bastolla;Jochen Farwer;Ernst Walter Knapp;Michele Vendruscolo

Frequent Co-Authors

Wolfram Saenger
Wolfram Saenger Freie Universität Berlin
Stefan Hecht
Stefan Hecht Humboldt-Universität zu Berlin
Christoph A. Schalley
Christoph A. Schalley Freie Universität Berlin
Joachim Heberle
Joachim Heberle Freie Universität Berlin
Oliver Seitz
Oliver Seitz Humboldt-Universität zu Berlin
Rainer Haag
Rainer Haag Freie Universität Berlin
Beate Koksch
Beate Koksch Freie Universität Berlin
Lennart Nilsson
Lennart Nilsson Karolinska Institute
Andreas Herrmann
Andreas Herrmann Humboldt-Universität zu Berlin
Johann Deisenhofer
Johann Deisenhofer The University of Texas Southwestern Medical Center

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