Citation Rankings
Highly Cited Researchers
Natural Sciences / Chemical Sciences Highly Cited Researchers Citation Rankings 2025
The Citation Rankings (Highly Cited Researchers) 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
Physical Chemistry
Photochemistry and photophysics
Light-matter interaction at nanoscale
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,091
5,315
0.406
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Ultrafast Spectroscopy
Photophysics
Physical Organic Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,147
2,329
0.562
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Organic Chemistry/Catalysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,794
2,408
0.635
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Supramolecular chemistry
gels
topochemical reactions
crystal engineering
solid-state reactions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,756
2,142
0.570
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Supramolecular chemistry
DNA nanotechnology
organic chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,073
922
0.300
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Nanoclusters
Nanoparticles
Polymer Nanocomposites
EMI Shielding
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,222
1,640
0.738
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Theoretical Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,160
978
0.453
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Physics
Chemistry
Biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,849
189
0.102
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Organic and Supramolecular Chemistry
Foldamer and Nanochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,746
1,022
0.585
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Developing new methods
asymmetric catalysis
activation relatively unreactive bonds
and total synthesis of natural products
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,334
621
0.466
* Total Citation Counts Rankings
Ranking Based On Selection: 11
catalysis
cross-coupling
asymmetric catalysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,165
497
0.427
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Bioinspired Coordination Chemistry
Reaction Mechanism Elucidation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,096
687
0.627
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Main Group Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
888
500
0.563
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Theoretical Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
750
528
0.704
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Organic Electronics
Organic Synthesis
Materials Chemistry
Battery materials
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
615
410
0.667
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Macrocyclic systems
Bioinorganic Chemistry
Planar Aromatic and Antiaromatic systems Porphyrin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
515
317
0.616
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Phytochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
374
138
0.369
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Theoretical Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
368
303
0.823
* Total Citation Counts Rankings
Ranking Based On Selection: 19
organic chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
350
207
0.591
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Inorganic Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
105
103
0.981
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Organometallic Chemistry
Homogeneous catalysts
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
70
65
0.929
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Ultrafast Spectroscopy
Physical Organic Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
57
57
1.000
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Organometallic Chemistry
Co-ordination chemistry
Bio-Inorganic Chemistry.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52
49
0.942
* Total Citation Counts Rankings
Ranking Based On Selection: 24
organic chemistry
Catalysis
organometallic chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34
34
1.000
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Organic Synthesis & Catalysis
Photocatalysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29
29
1.000
* Total Citation Counts Rankings
Rankings
71,333
762
3
Ranking Based On Selection: 1
K George Thomas
Indian Institute of Science Education and Research Thiruvananthapuram
Thiruvananthapuram, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,091
5,315
0.406
Physical Chemistry
Photochemistry and photophysics
Light-matter interaction at nanoscale
* Total Citation Counts Rankings
Rankings
244,208
4,683
7
Ranking Based On Selection: 2
Mahesh Hariharan
Indian Institute of Science Education and Research Thiruvananthapuram
Thiruvananthapuram, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,147
2,329
0.562
Ultrafast Spectroscopy
Photophysics
Physical Organic Chemistry
* Total Citation Counts Rankings
Rankings
264,460
5,309
9
Ranking Based On Selection: 3
Basudev Sahoo
Indian Institute of Science Education and Research Thiruvananthapuram
Thiruvananthapuram, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,794
2,408
0.635
* Total Citation Counts Rankings
Rankings
266,788
5,377
11
Ranking Based On Selection: 4
Kana M Sureshan
Indian Institute of Science Education and Research Thiruvananthapuram
Thiruvananthapuram, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,756
2,142
0.570
Supramolecular chemistry
gels
topochemical reactions
crystal engineering
solid-state reactions
* Total Citation Counts Rankings
Rankings
316,440
6,955
14
Ranking Based On Selection: 5
Reji Varghese
Indian Institute of Science Education and Research Thiruvananthapuram
Thiruvananthapuram, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,073
922
0.300
Supramolecular chemistry
DNA nanotechnology
organic chemistry
* Total Citation Counts Rankings
Rankings
407,990
10,090
19
Ranking Based On Selection: 6
Sourav Biswas
Indian Institute of Science Education and Research Thiruvananthapuram
Thiruvananthapuram, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,222
1,640
0.738
Nanoclusters
Nanoparticles
Polymer Nanocomposites
EMI Shielding
* Total Citation Counts Rankings
Rankings
416,612
10,418
22
Ranking Based On Selection: 7
RS Swathi
Indian Institute of Science Education and Research Thiruvananthapuram
Thiruvananthapuram, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,160
978
0.453
* Total Citation Counts Rankings
Rankings
465,847
12,253
25
Ranking Based On Selection: 8
Ms Gopinathan
Indian Institute of Science Education and Research Thiruvananthapuram
Thiruvananthapuram, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,849
189
0.102
* Total Citation Counts Rankings
Rankings
484,323
12,925
26
Ranking Based On Selection: 9
Soumen De
Indian Institute of Science Education and Research Thiruvananthapuram
Thiruvananthapuram, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,746
1,022
0.585
Organic and Supramolecular Chemistry
Foldamer and Nanochemistry
* Total Citation Counts Rankings
Rankings
575,872
16,606
32
Ranking Based On Selection: 10
Alagiri Kaliyamoorthy|Kaliyamoorthy Alagiri
Indian Institute of Science Education and Research Thiruvananthapuram
Thiruvananthapuram, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,334
621
0.466
Developing new methods
asymmetric catalysis
activation relatively unreactive bonds
and total synthesis of natural products
* Total Citation Counts Rankings
Rankings
623,659
18,614
35
Ranking Based On Selection: 11
Ramesh Rasappan
Indian Institute of Science Education and Research Thiruvananthapuram
Thiruvananthapuram, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,165
497
0.427
catalysis
cross-coupling
asymmetric catalysis
* Total Citation Counts Rankings
Rankings
645,580
19,513
38
Ranking Based On Selection: 12
Subrata Kundu
Indian Institute of Science Education and Research Thiruvananthapuram
Thiruvananthapuram, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,096
687
0.627
Bioinspired Coordination Chemistry
Reaction Mechanism Elucidation
* Total Citation Counts Rankings
Rankings
721,252
23,009
46
Ranking Based On Selection: 13
Ajay Venugopal
Indian Institute of Science Education and Research Thiruvananthapuram
Thiruvananthapuram, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
888
500
0.563
* Total Citation Counts Rankings
Rankings
780,800
26,012
51
Ranking Based On Selection: 14
Vennapusa Sivaranjana Reddy
Indian Institute of Science Education and Research Thiruvananthapuram
Thiruvananthapuram, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
750
528
0.704
* Total Citation Counts Rankings
Rankings
847,814
29,841
56
Ranking Based On Selection: 15
Meera Mohankumar
Indian Institute of Science Education and Research Thiruvananthapuram
Thiruvananthapuram, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
615
410
0.667
Organic Electronics
Organic Synthesis
Materials Chemistry
Battery materials
* Total Citation Counts Rankings
Rankings
906,123
33,282
62
Ranking Based On Selection: 16
Gokulnath S
Indian Institute of Science Education and Research Thiruvananthapuram
Thiruvananthapuram, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
515
317
0.616
Macrocyclic systems
Bioinorganic Chemistry
Planar Aromatic and Antiaromatic systems Porphyrin
* Total Citation Counts Rankings
Rankings
1,035,847
39,039
73
Ranking Based On Selection: 17
Jayakumar G
Indian Institute of Science Education and Research Thiruvananthapuram
Thiruvananthapuram, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
374
138
0.369
* Total Citation Counts Rankings
Rankings
1,041,719
39,304
74
Ranking Based On Selection: 18
Anto James
Indian Institute of Science Education and Research Thiruvananthapuram
Thiruvananthapuram, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
368
303
0.823
* Total Citation Counts Rankings
Rankings
1,062,115
40,287
76
Ranking Based On Selection: 19
Goreti Rajendar
Indian Institute of Science Education and Research Thiruvananthapuram
Thiruvananthapuram, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
350
207
0.591
* Total Citation Counts Rankings
Rankings
1,565,653
64,384
100
Ranking Based On Selection: 20
Selvakumar Balasubramaniam
Indian Institute of Science Education and Research Thiruvananthapuram
Thiruvananthapuram, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
105
103
0.981
* Total Citation Counts Rankings
Rankings
1,720,190
73,812
112
Ranking Based On Selection: 21
Ramaraj Ayyappan|A Ramaraj
Indian Institute of Science Education and Research Thiruvananthapuram
Thiruvananthapuram, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
70
65
0.929
Organometallic Chemistry
Homogeneous catalysts
* Total Citation Counts Rankings
Rankings
1,787,561
78,519
114
Ranking Based On Selection: 22
Kavya Vinod
Indian Institute of Science Education and Research Thiruvananthapuram
Thiruvananthapuram, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
57
57
1.000
Ultrafast Spectroscopy
Physical Organic Chemistry
* Total Citation Counts Rankings
Rankings
1,819,202
80,798
118
Ranking Based On Selection: 23
Aditesh Mondal
Indian Institute of Science Education and Research Thiruvananthapuram
Thiruvananthapuram, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52
49
0.942
Organometallic Chemistry
Co-ordination chemistry
Bio-Inorganic Chemistry.
* Total Citation Counts Rankings
Rankings
1,941,042
90,319
125
Ranking Based On Selection: 24
Revathi Chandrasekaran
Indian Institute of Science Education and Research Thiruvananthapuram
Thiruvananthapuram, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34
34
1.000
organic chemistry
Catalysis
organometallic chemistry
* Total Citation Counts Rankings
Rankings
1,984,122
93,842
130
Ranking Based On Selection: 25
Subham Das
Indian Institute of Science Education and Research Thiruvananthapuram
Thiruvananthapuram, India
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29
29
1.000
Organic Synthesis & Catalysis
Photocatalysis