Citation Rankings
Highly Cited Researchers
Natural Sciences / Chemical Sciences Highly Cited Researchers 17 Scientists Citation Rankings - 2025
The Citation Rankings (Highly Cited Researchers) list highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.
* Total Citation Counts Rankings
Ranking Based On Selection: 1
Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,835
5,046
0.571
* Total Citation Counts Rankings
Ranking Based On Selection: 2
coordination chemistry
reaction mechanisms
crystallography
catalysis
radiopharmacy models
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,197
1,026
0.197
* Total Citation Counts Rankings
Ranking Based On Selection: 3
ferrocene
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,122
930
0.226
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Organometallic chemistry
Corrosion
Material Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,923
1,898
0.484
* Total Citation Counts Rankings
Ranking Based On Selection: 5
supramolecular chemistry
tetrathiafulvalenes
calixarenes
molecular recognition
mass spectrometry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,259
756
0.335
* Total Citation Counts Rankings
Ranking Based On Selection: 6
chemistry
materials
crystallography
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,127
825
0.388
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Organic Synthesis
Process Chemistry
Drug Discovery
Catalysis
Green Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,691
503
0.297
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,577
829
0.526
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Chemistry
Physics
Biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
964
423
0.439
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with 20 similarly ranked institutions at City, Country, Region, and Global levels.
* Total Citation Counts Rankings
Ranking Based On Selection: 10
synthetic and computational chemistry
spectroscopy and electrochemistry
sustainable energy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
684
374
0.547
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
675
363
0.538
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
638
260
0.408
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Organic Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
525
150
0.286
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
381
21
0.055
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Organic chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
343
265
0.773
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Physical Chemistry
Organometallic Chemistry
Electrochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
335
120
0.358
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Coordination Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
215
208
0.967
* Total Citation Counts Rankings
Rankings
115,792
433
7
Ranking Based On Selection: 1
Jeanet Conradie
University of the Free State
Bloemfontein, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,835
5,046
0.571
* Total Citation Counts Rankings
Rankings
201,263
838
18
Ranking Based On Selection: 2
Andreas Roodt
University of the Free State
Bloemfontein, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,197
1,026
0.197
coordination chemistry
reaction mechanisms
crystallography
catalysis
radiopharmacy models
* Total Citation Counts Rankings
Rankings
250,362
1,066
22
Ranking Based On Selection: 3
Jannie Swarts
University of the Free State
Bloemfontein, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,122
930
0.226
* Total Citation Counts Rankings
Rankings
261,687
1,117
23
Ranking Based On Selection: 4
Sumit Kumar
University of the Free State
Bloemfontein, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,923
1,898
0.484
Organometallic chemistry
Corrosion
Material Chemistry
* Total Citation Counts Rankings
Rankings
410,114
1,923
46
Ranking Based On Selection: 5
Vladimir Azov
University of the Free State
Bloemfontein, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,259
756
0.335
supramolecular chemistry
tetrathiafulvalenes
calixarenes
molecular recognition
mass spectrometry
* Total Citation Counts Rankings
Rankings
428,747
2,030
49
Ranking Based On Selection: 6
Hendrik Gideon Visser
University of the Free State
Bloemfontein, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,127
825
0.388
chemistry
materials
crystallography
* Total Citation Counts Rankings
Rankings
503,148
2,432
57
Ranking Based On Selection: 7
Mukut Gohain
University of the Free State
Bloemfontein, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,691
503
0.297
Organic Synthesis
Process Chemistry
Drug Discovery
Catalysis
Green Chemistry
* Total Citation Counts Rankings
Rankings
526,586
2,567
59
Ranking Based On Selection: 8
Lizette Erasmus
University of the Free State
Bloemfontein, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,577
829
0.526
* Total Citation Counts Rankings
Rankings
700,124
3,581
93
Ranking Based On Selection: 9
Marrigje Marianne Conradie
University of the Free State
Bloemfontein, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
964
423
0.439
* Total Citation Counts Rankings
Rankings
820,322
4,313
121
Ranking Based On Selection: 10
Karel Von Eschwege
University of the Free State
Bloemfontein, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
684
374
0.547
synthetic and computational chemistry
spectroscopy and electrochemistry
sustainable energy
360° Institutional Performance & Benchmarking Click Here for Live Demo
Gain data-driven strategic insights into your institution’s academic performance, global positioning, and competitive strengths through advanced analysis and benchmarking
with 20 similarly ranked institutions at City, Country, Region, and Global levels.
* Total Citation Counts Rankings
Rankings
824,766
4,343
123
Ranking Based On Selection: 11
Marietjie Schutte-Smith
University of the Free State
Bloemfontein, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
675
363
0.538
* Total Citation Counts Rankings
Rankings
843,686
4,467
125
Ranking Based On Selection: 12
Alice Brink
University of the Free State
Bloemfontein, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
638
260
0.408
* Total Citation Counts Rankings
Rankings
910,109
4,907
135
Ranking Based On Selection: 13
Charlene Marais
University of the Free State
Bloemfontein, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
525
150
0.286
* Total Citation Counts Rankings
Rankings
1,041,057
5,974
175
Ranking Based On Selection: 14
NM Walters
University of the Free State
Bloemfontein, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
381
21
0.055
* Total Citation Counts Rankings
Rankings
1,082,776
6,333
185
Ranking Based On Selection: 15
Anke Wilhelm
University of the Free State
Bloemfontein, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
343
265
0.773
* Total Citation Counts Rankings
Rankings
1,093,032
6,436
188
Ranking Based On Selection: 16
Eleanor Fourie
University of the Free State
Bloemfontein, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
335
120
0.358
Physical Chemistry
Organometallic Chemistry
Electrochemistry
* Total Citation Counts Rankings
Rankings
1,280,204
8,054
248
Ranking Based On Selection: 17
Orbett Alexander
University of the Free State
Bloemfontein, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
215
208
0.967