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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 9205 8344 261 240 226 13894

Roberto Improta publications per year

The chart shows the history of publications by Roberto Improta between 1997 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Roberto Improta published across 30 years, from 1997 to 2026, averaging 8.2 papers a year. Output peaked at 15 publications in 2021. 13 of the 247 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1997 to 2026. Vertical axis: number of publications, 0 to 15. Peak 15 publications in 2021. 1997: 1 publication 1998: 4 publications 1999: 2 publications 2000: 6 publications 2001: 6 publications 2002: 8 publications 2003: 5 publications 2004: 8 publications 2005: 5 publications 2006: 13 publications 2007: 11 publications 2008: 12 publications 2009: 9 publications 2010: 5 publications 2011: 7 publications 2012: 9 publications 2013: 6 publications 2014: 10 publications 2015: 11 publications 2016: 13 publications 2017: 11 publications 2018: 14 publications 2019: 7 publications 2020: 8 publications 2021: 15 publications 2022: 10 publications 2023: 7 publications 2024: 11 publications 2025: 7 publications 2026: 6 publications
1997 2026

247 publications in total across all disciplines

View publications per year as a table
Roberto Improta: publications per year, 1997 to 2026
Year Publications
1997 1
1998 4
1999 2
2000 6
2001 6
2002 8
2003 5
2004 8
2005 5
2006 13
2007 11
2008 12
2009 9
2010 5
2011 7
2012 9
2013 6
2014 10
2015 11
2016 13
2017 11
2018 14
2019 7
2020 8
2021 15
2022 10
2023 7
2024 11
2025 7
2026 6
Total 247
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Roberto Improta 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 Roberto Improta 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: 226 publications — 42nd percentile

42% 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 1,216 226
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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Roberto Improta 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 Roberto Improta 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

Roberto Improta is affiliated with the University of Naples Federico II in Italy. Their research spans the fields of Biochemistry, Genetics and Molecular Biology, Chemistry, and Physics and Astronomy. The subfields of study associated with their work include Molecular Biology, Atomic and Molecular Physics and Optics, Physical and Theoretical Chemistry, Electrical and Electronic Engineering, and Spectroscopy.

The research topics Roberto Improta focuses on encompass DNA and Nucleic Acid Chemistry, Photochemistry and Electron Transfer Studies, Spectroscopy and Quantum Chemical Studies, Advanced Biosensing and Bioanalysis Techniques, Molecular Junctions and Nanostructures, Advanced Chemical Physics Studies, and Photoreceptor and Optogenetics Research.

Roberto Improta has published extensively in several scientific journals. Frequent publication venues include Physical Chemistry Chemical Physics, Chemistry - A European Journal, Molecules, Journal of Chemical Theory and Computation, and The Journal of Physical Chemistry Letters.

Their recent papers include:

  • Ultrafast Dynamics of the Two Lowest Bright Excited States of Cytosine and 1-Methylcytosine: A Quantum Dynamical Study (2020), Journal of Chemical Theory and Computation
  • Nucleic Acids as a Playground for the Computational Study of the Photophysics and Photochemistry of Multichromophore Assemblies (2022), Accounts of Chemical Research
  • What Makes Thienoguanosine an Outstanding Fluorescent DNA Probe? (2020), Journal of the American Chemical Society
  • Quantum and semiclassical dynamical studies of nonadiabatic processes in solution: achievements and perspectives (2021), Physical Chemistry Chemical Physics
  • Nonadiabatic Absorption Spectra and Ultrafast Dynamics of DNA and RNA Photoexcited Nucleobases (2021), Molecules

Notable frequent collaborators include Lara Martínez-Fernández, Fabrizio Santoro, James A. Green, Luciana Esposito, and Haritha Asha.

Best Publications

  • A state-specific polarizable continuum model time dependent density functional theory method for excited state calculations in solution.

    Roberto Improta;Vincenzo Barone;Giovanni Scalmani;Michael J. Frisch

  • Effective method for the computation of optical spectra of large molecules at finite temperature including the Duschinsky and Herzberg–Teller effect: The Qx band of porphyrin as a case study

    Fabrizio Santoro;Alessandro Lami;Roberto Improta;Julien Bloino

  • Effective method to compute Franck-Condon integrals for optical spectra of large molecules in solution.

    Fabrizio Santoro;Roberto Improta;Alessandro Lami;Julien Bloino

  • Toward effective and reliable fluorescence energies in solution by a new state specific polarizable continuum model time dependent density functional theory approach

    Roberto Improta;Giovanni Scalmani;Michael J. Frisch;Vincenzo Barone

  • Quantum Mechanical Studies on the Photophysics and the Photochemistry of Nucleic Acids and Nucleobases

    Roberto Improta;Fabrizio Santoro;Lluís Blancafort

  • Singlet Excited-State Behavior of Uracil and Thymine in Aqueous Solution: A Combined Experimental and Computational Study of 11 Uracil Derivatives

    Thomas Gustavsson;Akos Bányász;Elodie Lazzarotto;Dimitra Markovitsi

  • Effective method to compute vibrationally resolved optical spectra of large molecules at finite temperature in the gas phase and in solution

    Fabrizio Santoro;Alessandro Lami;Roberto Improta;Vincenzo Barone

  • Interplay of electronic, environmental, and vibrational effects in determining the hyperfine coupling constants of organic free radicals.

    Roberto Improta;Vincenzo Barone

  • Insights for an Accurate Comparison of Computational Data to Experimental Absorption and Emission Spectra: Beyond the Vertical Transition Approximation.

    Francisco J. Avila Ferrer;Javier Cerezo;Emiliano Stendardo;Roberto Improta

  • Absorption and fluorescence spectra of uracil in the gas phase and in aqueous solution: a TD-DFT quantum mechanical study.

    Roberto Improta;Vincenzo Barone

  • DNA/RNA: Building Blocks of Life Under UV Irradiation

    Thomas Gustavsson;Roberto Improta;Dimitra Markovitsi

  • Absolute pKa determination for carboxylic acids using density functional theory and the polarizable continuum model

    Gloria A.A. Saracino;Roberto Improta;Vincenzo Barone

  • Ab initio calculations of absorption spectra of large molecules in solution: coumarin C153.

    Roberto Improta;Vincenzo Barone;Fabrizio Santoro

  • Quantum mechanical computations and spectroscopy: From small rigid molecules in the gas phase to large flexible molecules in solution

    Vincenzo Barone;Roberto Improta;Nadia Rega

  • Understanding the Role of Stereoelectronic Effects in Determining Collagen Stability. 1. A Quantum Mechanical Study of Proline, Hydroxyproline, and Fluoroproline Dipeptide Analogues in Aqueous Solution

    Roberto Improta;Caterina Benzi;Vincenzo Barone

  • Structure and Conformational Behavior of Biopolymers by Density Functional Calculations Employing Periodic Boundary Conditions. I. The Case of Polyglycine, Polyalanine, and Poly-α-aminoisobutyric Acid in Vacuo

    Roberto Improta;Vincenzo Barone;and Konstantin N. Kudin;Gustavo E. Scuseria

  • Solvent effect on the singlet excited-state lifetimes of nucleic acid bases: A computational study of 5-fluorouracil and uracil in acetonitrile and water.

    Fabrizio Santoro;Vincenzo Barone;Thomas Gustavsson;Roberto Improta

  • Electronic excited states responsible for dimer formation upon UV absorption directly by thymine strands: joint experimental and theoretical study.

    Akos Banyasz;Thierry Douki;Roberto Improta;Thomas Gustavsson

  • UV-Induced Proton Transfer between DNA Strands

    Yuyuan Zhang;Kimberly de La Harpe;Ashley A. Beckstead;Roberto Improta

  • 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

  • Influence of base stacking on excited-state behavior of polyadenine in water, based on time-dependent density functional calculations

    F. Santoro;Vincenzo Barone;R. Improta

Frequent Co-Authors

Vincenzo Barone
Vincenzo Barone Scuola Normale Superiore di Pisa
Fabrizio Santoro
Fabrizio Santoro National Research Council (CNR)
Dimitra Markovitsi
Dimitra Markovitsi University of Paris-Saclay
Thomas Gustavsson
Thomas Gustavsson University of Paris-Saclay
Bern Kohler
Bern Kohler The Ohio State University
Luigi Vitagliano
Luigi Vitagliano University of Naples Federico II
Giovanni Scalmani
Giovanni Scalmani Gaussian Inc.
Nilmoni Sarkar
Nilmoni Sarkar Indian Institute of Technology Kharagpur
Yves Mély
Yves Mély University of Strasbourg
John R. Helliwell
John R. Helliwell University of Manchester

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