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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 48 15278 13771 3871 3174 238 7942

Ryszard Jankowiak publications per year

The chart shows the history of publications by Ryszard Jankowiak between 1976 and 2024, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Ryszard Jankowiak published across 49 years, from 1976 to 2024, averaging 4.9 papers a year. Output peaked at 11 publications in 1996. 2 of the 240 publications appeared in the last two years.

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

240 publications in total across all disciplines

View publications per year as a table
Ryszard Jankowiak: publications per year, 1976 to 2024
Year Publications
1976 1
1977 0
1978 3
1979 1
1980 0
1981 1
1982 0
1983 6
1984 3
1985 2
1986 6
1987 3
1988 7
1989 5
1990 10
1991 5
1992 6
1993 6
1994 6
1995 6
1996 11
1997 5
1998 3
1999 11
2000 8
2001 2
2002 4
2003 5
2004 6
2005 5
2006 8
2007 10
2008 3
2009 3
2010 8
2011 8
2012 8
2013 4
2014 10
2015 6
2016 8
2017 5
2018 8
2019 5
2020 4
2021 2
2022 1
2023 0
2024 2
Total 240
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Ryszard Jankowiak 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 Ryszard Jankowiak 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, 221–240 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: 238 publications — 46th percentile

46% 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 1,216 238
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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Ryszard Jankowiak 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 Ryszard Jankowiak 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

Ryszard Jankowiak is affiliated with Kansas State University in the United States and has contributed extensively to research in biochemistry, genetics, molecular biology, neuroscience, and physics and astronomy. Their work spans several overlapping disciplines, including molecular biology, cellular and molecular neuroscience, atomic and molecular physics and optics, plant science, and electrochemistry.

The primary focus of Jankowiak's research lies in photosynthetic processes and mechanisms, with significant exploration into photoreceptor and optogenetics research as well as spectroscopy and quantum chemical studies. Additional topics of investigation by this scientist include light effects on plants, electrochemical analysis and applications, photochemistry and electron transfer studies, and advanced fluorescence microscopy techniques.

Ryszard Jankowiak has published research in multiple scientific journals. Frequent publication venues include:

  • Nature Communications
  • The Journal of Physical Chemistry B
  • The Journal of Chemical Physics
  • ACS Omega
  • International Journal of Molecular Sciences

Notable recent papers authored or co-authored by Jankowiak include:

  • "The structure of a red-shifted photosystem I reveals a red site in the core antenna", 2020, Nature Communications
  • "On the Red Antenna States of Photosystem I Mutants from Cyanobacteria Synechocystis PCC 6803", 2020, The Journal of Physical Chemistry B
  • "Exciton Lifetime Distributions and Population Dynamics in the FMO Protein Complex from Prosthecochloris aestuarii", 2021, ACS Omega
  • "Frequency-Domain Spectroscopic Study of the Photosystem I Supercomplexes, Isolated IsiA Monomers, and the Intact IsiA Ring", 2022, The Journal of Physical Chemistry B
  • "High-Resolution Frequency-Domain Spectroscopic and Modeling Studies of Photosystem I (PSI), PSI Mutants and PSI Supercomplexes", 2024, International Journal of Molecular Sciences

Jankowiak has collaborated frequently with several researchers, including:

  • Anton Khmelnitskiy
  • Hila Toporik
  • Yuval Mazor
  • T. Reinot
  • Zachary Dobson

Best Publications

  • Catechol estrogen quinones as initiators of breast and other human cancers: Implications for biomarkers of susceptibility and cancer prevention ☆

    Ercole Cavalieri;Dhubajyoti Chakravarti;Joseph Guttenplan;Elizabeth Hart

  • SPECTRAL HOLE-BURNING SPECTROSCOPY IN AMORPHOUS MOLECULAR SOLIDS AND PROTEINS

    R. Jankowiak;J. M. Hayes;G. J. Small

  • Electrochemically deposited metal nanoparticles for enhancing the performance of microfluidic MEMS in biochemical analysis

    Abdulilah Dawoud Bani-Yaseen;Toshikazo Kawaguchi;Ryszard Jankowiak

  • Site selective and single complex laser-based spectroscopies: a window on excited state electronic structure, excitation energy transfer, and electron-phonon coupling of selected photosynthetic complexes.

    Ryszard Jankowiak;Mike Reppert;Valter Zazubovich;Jörg Pieper;Jörg Pieper

  • Hole-burning spectroscopy and relaxation dynamics of amorphous solids at low temperatures.

    R. Jankowiak;G. J. Small

  • Expanded analysis of benzo[a]pyrene-DNA adducts formed in vitro and in mouse skin: their significance in tumor initiation

    Liang Chen;Prabu D. Devanesan;Sheila Higginbotham;Freek Ariese

  • Identification and quantitation of benzo[a]pyrene-DNA adducts formed in mouse skin.

    Eleanor G. Rogan;Prabhakar D. Devanesan;N. V. S. RamaKrishna;Sheila Higginbotham

  • Identification and quantitation of benzo[a]pyrene-DNA adducts formed by rat liver microsomes in vitro.

    P. D. Devanesan;N. V S RamaKrishna;N. V S RamaKrishna;N. V S RamaKrishna;R. Todorovic;R. Todorovic;R. Todorovic;Eleanor G Rogan

  • On the shape of the phonon spectral density in photosynthetic complexes.

    Adam Kell;Ximao Feng;Mike Reppert;Ryszard Jankowiak

  • Nonexponential hole burning in organic glasses

    R. Jankowiak;R. Richert;H. Bassler

  • Transient and persistent hole burning of the reaction center of photosystem II

    Ryszard Jankowiak;Deming Tang;Gerald J. Small;Michael Seibert

  • Comparison of the LH2 Antenna Complexes of Rhodopseudomonas acidophila (Strain 10050) and Rhodobacter sphaeroides by High-Pressure Absorption, High-Pressure Hole Burning, and Temperature-Dependent Absorption Spectroscopies

    † H.-M. Wu;M. Ratsep;R. Jankowiak;and R. J. Cogdell

  • Femtosecond and Hole-Burning Studies of B800's Excitation Energy Relaxation Dynamics in the LH2 Antenna Complex of Rhodopseudomonas acidophila (Strain 10050)

    H.-M. Wu;S. Savikhin;N. R. S. Reddy;R. Jankowiak

  • Excited-state structure and energy-transfer dynamics of two different preparations of the reaction center of photosystem II: a hole-burning study

    D. Tang;R. Jankowiak;M. Seibert;C. F. Yocum

  • Identification and quantitation of dibenzo[a,l]pyrene-DNA adducts formed by rat liver microsomes in vitro: Preponderance of depurinating adducts

    K. M. Li;R. Todorovic;Eleanor G. Rogan;Ercole L. Cavalieri

  • Primary donor state mode structure and energy transfer in bacterial reaction centers

    S. G. Johnson;D. Tang;R. Jankowiak;J. M. Hayes

  • Fluorescence line narrowing: a high-resolution window on DNA and protein damage from chemical carcinogens.

    Ryszard Jankowiak;Gerald J. Small

  • Qy-Level Structure and Dynamics of Solubilized Light-Harvesting Complex II of Green Plants: Pressure and Hole Burning Studies

    J. Pieper;M. Ratsep;R. Jankowiak;K.-D. Irrgang

  • Challenges facing an understanding of the nature of low-energy excited states in photosynthesis.

    Jeffrey R. Reimers;Jeffrey R. Reimers;Malgorzata Biczysko;Douglas Bruce;David F. Coker

  • Mechanism of metabolic activation of the potent carcinogen 7,12-dimethylbenz[a]anthracene

    N. V S RamaKrishna;P. D. Devanesan;Eleanor G Rogan;Ercole Cavalieri

Frequent Co-Authors

Gerald J. Small
Gerald J. Small Iowa State University
Ercole L. Cavalieri
Ercole L. Cavalieri University of Nebraska Medical Center
Michael Seibert
Michael Seibert National Renewable Energy Laboratory
Freek Ariese
Freek Ariese Vrije Universiteit Amsterdam
Robert E. Blankenship
Robert E. Blankenship Washington University in St. Louis
Jun Li
Jun Li Xi'an Jiaotong University
Michael L. Gross
Michael L. Gross Washington University in St. Louis
Nicholas E. Geacintov
Nicholas E. Geacintov New York University
John M. Hayes
John M. Hayes Woods Hole Oceanographic Institution
David M. Tiede
David M. Tiede Argonne National Laboratory

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