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Chemistry
South Africa
2026

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 87 2368 2131 4 4 1001 34134

Tebello Nyokong publications per year

The chart shows the history of publications by Tebello Nyokong between 1971 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Tebello Nyokong published across 55 years, from 1971 to 2025, averaging 19.6 papers a year. Output peaked at 82 publications in 2022. 59 of the 1,076 publications appeared in the last two years.

No. of publications
20 40 60 80
Bar chart. Horizontal axis: year, 1971 to 2025. Vertical axis: number of publications, 0 to 82. Peak 82 publications in 2022. 1971: 1 publication 1972: 0 publications 1973: 0 publications 1974: 0 publications 1975: 0 publications 1976: 0 publications 1977: 0 publications 1978: 0 publications 1979: 0 publications 1980: 0 publications 1981: 0 publications 1982: 1 publication 1983: 0 publications 1984: 0 publications 1985: 0 publications 1986: 4 publications 1987: 4 publications 1988: 1 publication 1989: 2 publications 1990: 0 publications 1991: 0 publications 1992: 0 publications 1993: 3 publications 1994: 6 publications 1995: 3 publications 1996: 4 publications 1997: 8 publications 1998: 5 publications 1999: 4 publications 2000: 7 publications 2001: 15 publications 2002: 13 publications 2003: 10 publications 2004: 8 publications 2005: 21 publications 2006: 24 publications 2007: 40 publications 2008: 29 publications 2009: 37 publications 2010: 51 publications 2011: 49 publications 2012: 54 publications 2013: 52 publications 2014: 41 publications 2015: 59 publications 2016: 45 publications 2017: 64 publications 2018: 48 publications 2019: 58 publications 2020: 49 publications 2021: 68 publications 2022: 82 publications 2023: 47 publications 2024: 25 publications 2025: 34 publications
1971 2025

1,076 publications in total across all disciplines

View publications per year as a table
Tebello Nyokong: publications per year, 1971 to 2025
Year Publications
1971 1
1972 0
1973 0
1974 0
1975 0
1976 0
1977 0
1978 0
1979 0
1980 0
1981 0
1982 1
1983 0
1984 0
1985 0
1986 4
1987 4
1988 1
1989 2
1990 0
1991 0
1992 0
1993 3
1994 6
1995 3
1996 4
1997 8
1998 5
1999 4
2000 7
2001 15
2002 13
2003 10
2004 8
2005 21
2006 24
2007 40
2008 29
2009 37
2010 51
2011 49
2012 54
2013 52
2014 41
2015 59
2016 45
2017 64
2018 48
2019 58
2020 49
2021 68
2022 82
2023 47
2024 25
2025 34
Total 1,076
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Tebello Nyokong 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 Tebello Nyokong 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, 1,001–1,020 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: 1,001 publications — 99th percentile

99% 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
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 1,001
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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Tebello Nyokong 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 Tebello Nyokong 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, 86–87 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: 87 D-Index — 87th percentile

87% 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
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 87
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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Research.com Recognitions

  • 2026 - Research.com Chemistry in South Africa Leader Award
  • 2025 - Research.com Chemistry in South Africa Leader Award
  • 2022 - Research.com Chemistry in South Africa Leader Award
  • 2009 - Fellow, The World Academy of Sciences
  • Fellow of the Royal Society of South Africa
  • Fellow of the Royal Society of South Africa
  • Fellow of the Royal Society of South Africa
  • Fellow of the Royal Society of South Africa
  • Fellow of the Royal Society of South Africa
  • Fellow of the Royal Society of South Africa
  • Fellow of the Royal Society of South Africa
  • Fellow of the Royal Society of South Africa

Overview

Tebello Nyokong is affiliated with Rhodes University in South Africa and has an extensive publication record primarily focused on materials science and engineering. Their research spans several subfields, including materials chemistry, biomedical engineering, pulmonary and respiratory medicine, renewable energy, sustainability and the environment, as well as electrical and electronic engineering.

Their main research topics cover:

  • Porphyrin and Phthalocyanine Chemistry
  • Nanoplatforms for cancer theranostics
  • Photodynamic Therapy Research Studies
  • Electrochemical sensors and biosensors
  • Luminescence and Fluorescent Materials
  • Electrochemical Analysis and Applications
  • Advanced Photocatalysis Techniques

Nyokong's frequent co-authors include John Mack, Balaji Babu, Yolande Ikala Openda, Sithi Mgidlana, and Pınar Şen, indicating collaborative involvement in research projects across a variety of topics.

Common publication venues for their work include:

  • SSRN Electronic Journal
  • Photodiagnosis and Photodynamic Therapy
  • Journal of Porphyrins and Phthalocyanines
  • Journal of Photochemistry and Photobiology A Chemistry
  • Dyes and Pigments

Recent papers authored or co-authored by Nyokong cover different areas within their research scope:

  • A simple quinoline-thiophene Schiff base turn-off chemosensor for Hg2+ detection: spectroscopy, sensing properties and applications, 2021, Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy
  • Nanohybrid electrocatalyst based on cobalt phthalocyanine-carbon nanotube-reduced graphene oxide for ultrasensitive detection of glucose in human saliva, 2021, Sensors and Actuators B Chemical
  • Solventless synthesis of nanospinel Ni1−xCoxFe2O4 (0 ≤ x ≤ 1) solid solutions for efficient electrochemical water splitting and supercapacitance, 2021, RSC Advances
  • An imidazole-based fluorescent probe for the Mercury(II) Ion with rapid response in vitro, 2023, Dyes and Pigments
  • Sn(iv) N-confused porphyrins as photosensitizer dyes for photodynamic therapy in the near IR region, 2020, Dalton Transactions

Nyokong has contributed to academic literature through book publications, including a title published by World Scientific:

  • Porphyrin Science by Women, 2020

The scientist has been recognized by several fellowships, notably as a Fellow of The World Academy of Sciences in 2009 and as a Fellow of the Royal Society of South Africa.

Best Publications

  • Effects of substituents on the photochemical and photophysical properties of main group metal phthalocyanines

    Tebello Nyokong

  • Photophysical and photochemical studies of zinc(II) phthalocyanine derivatives—effects of substituents and solvents

    Abimbola Ogunsipe;Ji-Yao Chen;Tebello Nyokong

  • Metallophthalocyanine-based molecular materials as catalysts for electrochemical reactions

    José H. Zagal;Sophie Griveau;J. Francisco Silva;Tebello Nyokong

  • Solvent effects on the photochemical and fluorescence properties of zinc phthalocyanine derivatives

    Abimbola Ogunsipe;David Maree;Tebello Nyokong

  • Synthetic pathways to water-soluble phthalocyanines and close analogs

    Fabienne Dumoulin;Mahmut Durmuş;Vefa Ahsen;Tebello Nyokong

  • Photophysical and photochemical studies of sulphonated non-transition metal phthalocyanines in aqueous and non-aqueous media

    Abimbola Ogunsipe;Tebello Nyokong

  • Photochemical studies of tetra-2,3-pyridinoporphyrazines

    Itumeleng Seotsanyana-Mokhosi;Nina Kuznetsova;Tebello Nyokong

  • Like a Bolt from the Blue: Phthalocyanines in Biomedical Optics

    Nawal Sekkat;Hubert van den Bergh;Tebello Nyokong;Norbert Lange

  • The interaction of melatonin and its precursors with aluminium, cadmium, copper, iron, lead, and zinc: an adsorptive voltammetric study.

    Janice Limson;Tebello Nyokong;Santy Daya

  • Silicon octaphenoxyphthalocyanines: photostability and singlet oxygen quantum yields

    M.David Maree;Nina Kuznetsova;Tebello Nyokong

  • Electrocatalytic oxidation and detection of hydrazine at gold electrode modified with iron phthalocyanine complex linked to mercaptopyridine self-assembled monolayer.

    Kenneth I. Ozoemena;Tebello Nyokong

  • Analysis of the absorption and magnetic circular dichroism spectra of zinc phthalocyanine and the .pi.-cation-radical species [ZnPc(1-)].cntdot.+

    Tebello Nyokong;Zbigniew Gasyna;Martin J. Stillman

  • Phthalocyanine. pi. -cation-radical species: photochemical and electrochemical preparation of (ZnPc(-1))/sup. +/ in solution

    Tebello Nyokong;Zbigniew Gasyna;Martin J. Stillman

  • Electrocatalysis of asulam on cobalt phthalocyanine modified multi-walled carbon nanotubes immobilized on a basal plane pyrolytic graphite electrode

    Msimelelo P. Siswana;Kenneth I. Ozoemena;Tebello Nyokong

  • Photochemical and Photophysical Properties of Metallophthalocyanines

    Tebello Nyokong;Edith Antunes

  • Effects of substituents and solvents on the photochemical properties of zinc phthalocyanine complexes and their protonated derivatives

    Abimbola Ogunsipe;Tebello Nyokong

  • Metallophthalocyanine catalysed electroreduction of nitrate and nitrite ions in alkaline media

    N. Chebotareva;T. Nyokong

  • Synthesis, photophysical and photochemical properties of substituted zinc phthalocyanines

    Ilke Gürol;Mahmut Durmuş;Mahmut Durmuş;Vefa Ahsen;Vefa Ahsen;Tebello Nyokong

  • Syntheses and photochemical properties of octasubstituted phthalocyaninato zinc complexes

    Suzanne E. Maree;Tebello Nyokong

  • Photosensitized transformation of 4-chlorophenol in the presence of aggregated and non-aggregated metallophthalocyanines

    Kenneth Ozoemena;Nina Kuznetsova;Tebello Nyokong

  • Electrocatalytic behavior of substituted cobalt phthalocyanines towards the oxidation of cysteine

    Suzanne Maree;Tebello Nyokong

  • Effects of axial ligands on the photophysical properties of silicon octaphenoxyphthalocyanine

    M. David Maree;Tebello Nyokong;Klaus Suhling;David Phillips

  • Photosensitizers in Medicine, Environment, and Security

    Tebello Nyokong;Vefa Ahsen

Frequent Co-Authors

John Mack
John Mack Rhodes University
Kenneth I. Ozoemena
Kenneth I. Ozoemena University of the Witwatersrand
Fethi Bedioui
Fethi Bedioui Chimie ParisTech
Nagao Kobayashi
Nagao Kobayashi Tokyo Institute of Technology
Mahmut Durmuş
Mahmut Durmuş Gebze Technical University
Vefa Ahsen
Vefa Ahsen Gebze Technical University
Zhen Shen
Zhen Shen Nanjing University
José H. Zagal
José H. Zagal University of Santiago Chile
Martin J. Stillman
Martin J. Stillman University of Western Ontario
Derck Schlettwein
Derck Schlettwein University of Giessen

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