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J. Sérgio Seixas de Melo

J. Sérgio Seixas de Melo

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 50 14457 13020 122 118 203 8299

J. Sérgio Seixas de Melo publications per year

The chart shows the history of publications by J. Sérgio Seixas de Melo between 1993 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. J. Sérgio Seixas de Melo published across 33 years, from 1993 to 2025, averaging 7.8 papers a year. Output peaked at 18 publications in 2013. 30 of the 259 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1993 to 2025. Vertical axis: number of publications, 0 to 18. Peak 18 publications in 2013. 1993: 1 publication 1994: 1 publication 1995: 3 publications 1996: 1 publication 1997: 1 publication 1998: 0 publications 1999: 1 publication 2000: 2 publications 2001: 9 publications 2002: 7 publications 2003: 7 publications 2004: 9 publications 2005: 10 publications 2006: 10 publications 2007: 11 publications 2008: 13 publications 2009: 12 publications 2010: 10 publications 2011: 6 publications 2012: 8 publications 2013: 18 publications 2014: 8 publications 2015: 11 publications 2016: 5 publications 2017: 8 publications 2018: 8 publications 2019: 4 publications 2020: 11 publications 2021: 17 publications 2022: 9 publications 2023: 8 publications 2024: 17 publications 2025: 13 publications
1993 2025

259 publications in total across all disciplines

View publications per year as a table
J. Sérgio Seixas de Melo: publications per year, 1993 to 2025
Year Publications
1993 1
1994 1
1995 3
1996 1
1997 1
1998 0
1999 1
2000 2
2001 9
2002 7
2003 7
2004 9
2005 10
2006 10
2007 11
2008 13
2009 12
2010 10
2011 6
2012 8
2013 18
2014 8
2015 11
2016 5
2017 8
2018 8
2019 4
2020 11
2021 17
2022 9
2023 8
2024 17
2025 13
Total 259
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J. Sérgio Seixas de Melo publications per year - data summary

  • J. Sérgio Seixas de Melo, a Chemistry scholar from University of Coimbra, has 259 publications recorded across 33 years, from 1993 to 2025.
  • The oldest publication on record dates to 1993 and the most recent to 2025.
  • The most productive year is 2013, with 18 publications.
  • The least productive years with any output are 1993, 1994, 1996, 1997 and others, with 1 publication each.
  • 1 of the 33 years in the span carries no publications at all (1998).
  • The rate of publication averages 7.8 papers per year over the whole span, or 8.1 per year counting only the 32 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 64 publications, 25% of the career total.
  • Split into equal eras - 1993-2003: 33 publications (3.0 per year); 2004-2014: 115 publications (10.5 per year); 2015-2025: 111 publications (10.1 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

J. Sérgio Seixas de Melo 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 J. Sérgio Seixas de Melo 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, 201–220 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: 203 publications — 34th percentile

34% 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 1,281 203
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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J. Sérgio Seixas de Melo publication distribution in Chemistry in 2026 - data summary

  • The chart plots the publication count of all 17,934 Chemistry scientists ranked by Research.com in 2026, grouped into 63 ranges running from 61–80 to 1,295+ publications.
  • J. Sérgio Seixas de Melo, a Chemistry scholar from University of Coimbra, records 203 publications - the 34th percentile of the discipline.
  • 34% of ranked Chemistry scientists score the same or lower than J. Sérgio Seixas de Melo, and about 66% score higher.
  • The median of the discipline falls in the 241–260 publications range, and J. Sérgio Seixas de Melo ranks below the median.
  • The most crowded range is 161–180 publications, holding 1,350 scientists (8% of the field).
  • 77% of the field sits in the lowest quarter of the value range (up to 361–380 publications), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 1,295 publications or more, 100 scientists in all (<1% of the field).

J. Sérgio Seixas de Melo 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 J. Sérgio Seixas de Melo 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, 50–51 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: 50 D-Index — 21st percentile

21% 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 50
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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J. Sérgio Seixas de Melo D-index placement in Chemistry in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 17,934 Chemistry scientists ranked by Research.com in 2026, grouped into 61 ranges running from 40–41 to 159+ D-Index.
  • J. Sérgio Seixas de Melo, a Chemistry scholar from University of Coimbra, records 50 D-Index - the 21st percentile of the discipline.
  • 21% of ranked Chemistry scientists score the same or lower than J. Sérgio Seixas de Melo, and about 79% score higher.
  • The median of the discipline falls in the 62–63 D-Index range, and J. Sérgio Seixas de Melo ranks below the median.
  • The most crowded range is 56–57 D-Index, holding 1,051 scientists (6% of the field).
  • 70% of the field sits in the lowest quarter of the value range (up to 70–71 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 159 D-Index or more, 98 scientists in all (<1% of the field).

Overview

J. Sérgio Seixas de Melo is affiliated with the University of Coimbra in Portugal. Their research spans primarily the fields of Materials Science and Chemistry, with significant contributions in the subfields of Materials Chemistry, Electrical and Electronic Engineering, Organic Chemistry, Physical and Theoretical Chemistry, and Renewable Energy, Sustainability and the Environment.

The research topics covered include:

  • Luminescence and Fluorescent Materials
  • Porphyrin and Phthalocyanine Chemistry
  • Photochemistry and Electron Transfer Studies
  • Organic Light-Emitting Diodes Research
  • Molecular Sensors and Ion Detection
  • Advanced battery technologies research
  • Photochromic and Fluorescence Chemistry

The scientist has contributed frequently to several publication venues, notably:

  • Physical Chemistry Chemical Physics
  • The Cambridge Structural Database
  • Dyes and Pigments
  • Journal of Molecular Liquids
  • The Journal of Physical Chemistry C

Among recent publications, notable papers include:

  • "Enhancing the electrical conductivity and the dielectric features of ZnO nanoparticles through Co doping effect for energy storage applications," 2023, Journal of Materials Science Materials in Electronics
  • "Aggregation-Induced Emission: From Small Molecules to Polymers-Historical Background, Mechanisms and Photophysics," 2021, Topics in Current Chemistry
  • "Engineering Metal Halide Perovskite Nanocrystals with BODIPY Dyes for Photosensitization and Photocatalytic Applications," 2024, Journal of the American Chemical Society
  • "Effect of Co Doping on the Physical Properties and Organic Pollutant Photodegradation Efficiency of ZnO Nanoparticles for Environmental Applications," 2024, Nanomaterials
  • "Room-Temperature Phosphorescence and Efficient Singlet Oxygen Production by Cyclometalated Pt(II) Complexes with Aromatic Alkynyl Ligands," 2020, Inorganic Chemistry

Frequently collaborating researchers include:

  • Marta Piñeiro
  • Carla Cunha
  • João Pina
  • Ana Clara B. Rodrigues
  • Estefanía Delgado-Pinar

Best Publications

  • Comprehensive Evaluation of the Absorption, Photophysical, Energy Transfer, Structural, and Theoretical Properties of α-Oligothiophenes with One to Seven Rings

    Ralph S. Becker;J. Seixas de Melo;António L. Maçanita,†,‖ and;Fausto Elisei

  • Heavy-atom effects on metalloporphyrins and polyhalogenated porphyrins

    Emı́lia G. Azenha;Arménio C. Serra;Marta Pineiro;Mariette M. Pereira

  • Photophysical Behavior of Coumarins as a Function of Substitution and Solvent: Experimental Evidence for the Existence of a Lowest Lying 1(n,.pi.*) State

    J. Sérgio Seixas de Melo;Ralph S. Becker;António L. Maçanita

  • Photophysical and Spectroscopic Studies of Indigo Derivatives in Their Keto and Leuco Forms

    J. Seixas de Melo;and A. P. Moura;M. J. Melo

  • COMPREHENSIVE INVESTIGATION OF THE SOLUTION PHOTOPHYSICS AND THEORETICAL ASPECTS OF OLIGOTHIOPHENES OF 1-7 RINGS

    R. S. Becker;J. Seixas de Melo;A. L. Macanita;Fausto Elisei

  • Singlet and triplet energies of α-oligothiophenes: A spectroscopic, theoretical, and photoacoustic study: Extrapolation to polythiophene

    J. Seixas de Melo;Luı́s M. Silva;Luı́s G. Arnaut;R. S. Becker

  • Fluorescence Enhancement of the Water- Soluble Poly{1,4-phenylene-[9,9-bis- (4-phenoxybutylsulfonate)]fluorene-2,7-diyl} Copolymer in n-Dodecylpentaoxyethylene Glycol Ether Micelles

    H. D. Burrows;V. M. M. Lobo;J. Pina;M. L. Ramos

  • Spectroscopy and photophysics of 4- and 7-hydroxycoumarins and their thione analogs

    J Seixas de Melo;P.F Fernandes

  • S1∼>T1 intersystem crossing in π-conjugated organic polymers

    Hugh D. Burrows;J. Seixas de Melo;C. Serpa;L. G. Arnaut

  • Characterization of the Triplet State of Tris(8-hydroxyquinoline)aluminium(III) in Benzene Solution

    Hugh D. Burrows;Mariana Fernandes;J. Seixas de Melo;and Andrew P. Monkman

  • The use of microspectrofluorimetry for the characterization of lake pigments.

    Ana Claro;Maria J. Melo;Stephan Schäfer;J. Sérgio Seixas de Melo

  • Triplet state dynamics on isolated conjugated polymer chains

    H.D. Burrows;J. Seixas de Melo;C. Serpa;L.G. Arnaut

  • Alternating Binaphthyl-Thiophene Copolymers: Synthesis, Spectroscopy, and Photophysics and Their Relevance to the Question of Energy Migration versus Conformational Relaxation

    J. Pina;J. Seixas de Melo;H. D. Burrows;A. L. Maçanita

  • Photophysics of thiophene based polymers in solution: The role of nonradiative decay processes

    J. Seixas de Melo;H. D. Burrows;Mattias Svensson;Mats R. Andersson

  • A photochemical study on the blue dye indigo: from solution to ancient Andean textiles.

    Micaela M Sousa;Catarina Miguel;Isa Rodrigues;A Jorge Parola

  • A Study in Mauve: Unveiling Perkin's Dye in Historic Samples

    Micaela M. Sousa;Maria J. Melo;A. Jorge Parola;Peter J. T. Morris

  • Picosecond conformational relaxation of singlet excited polyfluorene in solution

    Fernando B. Dias;António L. Maçanita;J. Seixas de Melo;Hugh D. Burrows

  • Spectral and Photophysical Studies of Substituted Indigo Derivatives in Their Keto Forms

    J. Sérgio Seixas de Melo;Raquel Rondão;Hugh D. Burrows;Maria J. Melo

  • Excited-State Dynamics and Self-Organization of Poly(3-hexylthiophene) (P3HT) in Solution and Thin Films

    Bruno Ferreira;Palmira Ferreira da Silva;J. Sérgio Seixas de Melo;João Pina

  • On the triplet state of poly(N-vinylcarbazole)

    J. Pina;J. Seixas de Melo;H.D. Burrows;A.P. Monkman

  • Photophysics of an Indigo Derivative (Keto and Leuco Structures) with Singular Properties

    J Seixas de Melo;R Rondão;H D Burrows;M J Melo

Frequent Co-Authors

Hugh D. Burrows
Hugh D. Burrows University of Coimbra
Ullrich Scherf
Ullrich Scherf University of Wuppertal
Carlos Lodeiro
Carlos Lodeiro Universidade Nova de Lisboa
Fernando Pina
Fernando Pina Universidade Nova de Lisboa
João C. Lima
João C. Lima Universidade Nova de Lisboa
Andrew P. Monkman
Andrew P. Monkman Durham University
Enrique García-España
Enrique García-España University of Valencia
Isabel S. Gonçalves
Isabel S. Gonçalves University of Aveiro
Martyn Pillinger
Martyn Pillinger University of Aveiro
Juan Casado
Juan Casado University of Malaga

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