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Friedrich Siebert

Friedrich Siebert

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 52 13668 12307 1008 893 157 8229

Friedrich Siebert publications per year

The chart shows the history of publications by Friedrich Siebert between 1968 and 2021, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Friedrich Siebert published across 54 years, from 1968 to 2021, averaging 3 papers a year. Output peaked at 10 publications in 1997. 3 of the 164 publications appeared in the last two years.

No. of publications
2 4 6 8 10
Bar chart. Horizontal axis: year, 1968 to 2021. Vertical axis: number of publications, 0 to 10. Peak 10 publications in 1997. 1968: 1 publication 1969: 0 publications 1970: 0 publications 1971: 3 publications 1972: 1 publication 1973: 0 publications 1974: 0 publications 1975: 0 publications 1976: 0 publications 1977: 1 publication 1978: 1 publication 1979: 2 publications 1980: 2 publications 1981: 2 publications 1982: 3 publications 1983: 2 publications 1984: 1 publication 1985: 4 publications 1986: 1 publication 1987: 1 publication 1988: 3 publications 1989: 5 publications 1990: 7 publications 1991: 4 publications 1992: 6 publications 1993: 5 publications 1994: 6 publications 1995: 8 publications 1996: 5 publications 1997: 10 publications 1998: 5 publications 1999: 8 publications 2000: 9 publications 2001: 5 publications 2002: 7 publications 2003: 5 publications 2004: 5 publications 2005: 2 publications 2006: 6 publications 2007: 6 publications 2008: 6 publications 2009: 2 publications 2010: 0 publications 2011: 1 publication 2012: 0 publications 2013: 4 publications 2014: 0 publications 2015: 2 publications 2016: 0 publications 2017: 1 publication 2018: 1 publication 2019: 2 publications 2020: 1 publication 2021: 2 publications
1968 2021

164 publications in total across all disciplines

View publications per year as a table
Friedrich Siebert: publications per year, 1968 to 2021
Year Publications
1968 1
1969 0
1970 0
1971 3
1972 1
1973 0
1974 0
1975 0
1976 0
1977 1
1978 1
1979 2
1980 2
1981 2
1982 3
1983 2
1984 1
1985 4
1986 1
1987 1
1988 3
1989 5
1990 7
1991 4
1992 6
1993 5
1994 6
1995 8
1996 5
1997 10
1998 5
1999 8
2000 9
2001 5
2002 7
2003 5
2004 5
2005 2
2006 6
2007 6
2008 6
2009 2
2010 0
2011 1
2012 0
2013 4
2014 0
2015 2
2016 0
2017 1
2018 1
2019 2
2020 1
2021 2
Total 164
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Friedrich Siebert 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 Friedrich Siebert 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, 141–160 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: 157 publications — 16th percentile

16% 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 1,218 157
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
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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Friedrich Siebert 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 Friedrich Siebert 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, 52–53 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: 52 D-Index — 26th percentile

26% 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 52
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

Friedrich Siebert is affiliated with the University of Freiburg in Germany. Their research spans several interconnected fields, focusing primarily on Agricultural and Biological Sciences, Biochemistry, Genetics and Molecular Biology, and Neuroscience. Within these main fields, their work concentrates on subfields including Plant Science, Molecular Biology, and Cellular and Molecular Neuroscience.

The core topics in Siebert's research revolve around light-related biological processes, specifically:

  • Light effects on plants
  • Photosynthetic Processes and Mechanisms
  • Photoreceptor and optogenetics research

Siebert has published multiple peer-reviewed papers contributing to the understanding of how light influences protein and plant functions. Notable recent papers include:

  • "Intramolecular Proton Transfer Controls Protein Structural Changes in Phytochrome," 2020, published in Biochemistry
  • "Local Electric Field Changes during the Photoconversion of the Bathy Phytochrome Agp2," 2021, published in Biochemistry
  • "Light- and temperature-dependent dynamics of chromophore and protein structural changes in bathy phytochrome Agp2," 2021, published in Physical Chemistry Chemical Physics

These publications reflect a focus on molecular mechanisms underlying photoconversion and protein structural changes in phytochromes, which are light-sensitive proteins involved in plant development and signaling.

Siebert commonly collaborates with a group of co-authors who frequently appear on these papers. The prominent collaborators include:

  • Anastasia Kraskov
  • David Buhrke
  • Norbert Michael
  • Patrick Scheerer
  • Peter Hildebrandt

The publication venues where Siebert's research appears most often tend to be specialized journals in molecular biology and physical chemistry. These include:

  • Biochemistry
  • Physical Chemistry Chemical Physics

Best Publications

  • Light-driven protonation changes of internal aspartic acids of bacteriorhodopsin: an investigation of static and time-resolved infrared difference spectroscopy using [4-13C]aspartic acid labeled purple membrane

    Engelhard M;Gerwert K;Hess B;Kreutz W

  • Vibrational spectroscopy in life science

    Friedrich Siebert;Peter Hildebrandt

  • Time-Resolved FT-IR Absorption Spectroscopy Using a Step-Scan Interferometer

    Wolfgang Uhmann;Andreas Becker;Christoph Taran;Friedrich Siebert

  • Protonation states of membrane-embedded carboxylic acid groups in rhodopsin and metarhodopsin II: a Fourier-transform infrared spectroscopy study of site-directed mutants.

    Karim Fahmy;Frank Jager;Mareike Beck;Tatyana A. Zvyaga

  • Evidence for light-induced 13-cis, 14-s-cis isomerization in bacteriorhodopsin obtained by FTIR difference spectroscopy using isotopically labelled retinals.

    Klaus Gerwert;Friedrich Siebert

  • Functional role of the "ionic lock"--an interhelical hydrogen-bond network in family A heptahelical receptors.

    Reiner Vogel;Mohana Mahalingam;Steffen Lüdeke;Thomas Huber

  • Investigation of the Primary Photochemistry of Bacteriorhodopsin by Low‐Temperature Fourier‐Transform Infrared Spectroscopy

    Friedrich Siebert;Werner Mäntele

  • Identification of Glutamic Acid 113 as the Schiff Base Proton Acceptor in the Metarhodopsin II Photointermediate of Rhodopsin

    Jäger F;Fahmy K;Sakmar Tp;Siebert F

  • The Amino Terminus of the Fourth Cytoplasmic Loop of Rhodopsin Modulates Rhodopsin-Transducin Interaction

    Ethan P. Marin;A.Gopala Krishna;Tatyana A. Zvyaga;Juergen Isele

  • Asp85 is the only internal aspartic acid that gets protonated in the M intermediate and the purple-to-blue transition of bacteriorhodopsin. A solid-state 13C CP-MAS NMR investigation.

    Gu¨nther Metz;Friedrich Siebert;Martin Engelhard

  • Removal of the 9-methyl group of retinal inhibits signal transduction in the visual process. A Fourier transform infrared and biochemical investigation.

    Ulrich M. Ganter;Eduard D. Schmid;Dolores Perez-Sala;Robert R. Rando

  • Evidence for the protonation of two internal carboxylic groups during the photocycle of bacteriorhodopsin: Investigation of kinetic infrared spectroscopy

    F. Siebert;W. Mäntele;W. Kreutz

  • Charge transfer in peptides: Intramolecular radical transformations involving methionine, tryptophan and tyrosine

    Walter A. Prütz;Fritz Siebert;John Butler;Edward J. Land

  • Resolving voltage-dependent structural changes of a membrane photoreceptor by surface-enhanced IR difference spectroscopy.

    X. Jiang;E. Zaitseva;M. Schmidt;F. Siebert

  • Conformations of the Active and Inactive States of Opsin

    Reiner Vogel;Friedrich Siebert

  • Time-Resolved Step-Scan FT-IR Investigations of the Transition from KL to L in the Bacteriorhodopsin Photocycle: Identification of Chromophore Twists by Assigning Hydrogen-Out-Of-Plane (HOOP) Bending Vibrations

    Olaf Weidlich;Friedrich Siebert

  • Fourier-transform infrared spectroscopy applied to rhodopsin. The problem of the protonation state of the retinylidene Schiff base re-investigated.

    Friedrich Siebert;Werner Mäntele;Klaus Gerwert

  • The role of Glu181 in the photoactivation of rhodopsin

    Steffen Lüdeke;Mareike Beck;Elsa C.Y. Yan;Thomas P. Sakmar

  • Vibrational spectroscopy as a tool for probing protein function.

    Reiner Vogel;Friedrich Siebert

  • Time-Resolved Step-Scan Fourier Transform Infrared Spectroscopy Reveals Differences between Early and Late M Intermediates of Bacteriorhodopsin

    C. Rödig;I. Chizhov;O. Weidlich;F. Siebert

  • Infrared spectroscopy applied to biochemical and biological problems.

    Unknown

Frequent Co-Authors

Thomas P. Sakmar
Thomas P. Sakmar Rockefeller University
Martin Engelhard
Martin Engelhard Max Planck Society
Peter Hildebrandt
Peter Hildebrandt Technical University of Berlin
Mordechai Sheves
Mordechai Sheves Weizmann Institute of Science
Wolfgang Gärtner
Wolfgang Gärtner Leipzig University
Hugo Scheer
Hugo Scheer Ludwig-Maximilians-Universität München
Oliver Lenz
Oliver Lenz Johnson & Johnson
Benno Hess
Benno Hess Max Planck Society
Friedhelm Lendzian
Friedhelm Lendzian Technical University of Berlin
Dieter Oesterhelt
Dieter Oesterhelt Max Planck Society

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