Citation Rankings
Highly Cited Researchers
American University Highly Cited Researchers CitationNatural Sciences / Chemical Sciences 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
Drug nanocarriers
biosensors
Molecular Diagnosis
Infectious diseases
wound dressings
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,567
4,379
0.511
* Total Citation Counts Rankings
Ranking Based On Selection :2
atmospheric chemistry
analytical chemistry
e-cigarette
tobacco
waterpipe
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,658
4,114
0.537
* Total Citation Counts Rankings
Ranking Based On Selection :3
Computational Chemistry and Chemical Weapons Nonproliferation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,786
1,876
0.276
* Total Citation Counts Rankings
Ranking Based On Selection :4
Physical Chemistry
Molecular Modeling
Computational Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,403
1,332
0.247
* Total Citation Counts Rankings
Ranking Based On Selection :5
Polymers
Nanocomposites
Ionic Liquids
Thermodynamics
Clay
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,041
2,368
0.470
* Total Citation Counts Rankings
Ranking Based On Selection :6
Organic synthesis
Heterocyclic chemistry
Polymers
Biomaterials
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,052
2,049
0.406
* Total Citation Counts Rankings
Ranking Based On Selection :7
Wastewater treatment
Novel Adsorbents
Kinetics and Thermodynamics in Solution
Micelles-dyes Interactions
Protein-Nucleic Ac
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,954
1,717
0.434
* Total Citation Counts Rankings
Ranking Based On Selection :8
Supramolecular Chemistry
Organic Synthesis
Polymer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,432
1,121
0.327
* Total Citation Counts Rankings
Ranking Based On Selection :9
Chemical & Environmental Eng.
Data Analytics
and Process Modelling & Control
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,336
2,963
0.888
* Total Citation Counts Rankings
Ranking Based On Selection :10
Environmental Sciences
Organic Chemistry
Analytical Chemistry
Tobacco Regulatory Science
Toxicology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,157
2,386
0.756
* Total Citation Counts Rankings
Ranking Based On Selection :11
Organic & Materials Chemistry
Transformative Education
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,077
1,334
0.434
* Total Citation Counts Rankings
Ranking Based On Selection :12
Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,869
1,409
0.491
* Total Citation Counts Rankings
Ranking Based On Selection :13
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,821
1,457
0.516
* Total Citation Counts Rankings
Ranking Based On Selection :14
inorganic nano-materials
water treatment
catalysis
materials science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,775
1,561
0.563
* Total Citation Counts Rankings
Ranking Based On Selection :15
Chemical Science
Asymmetric Catalysis
Material Science
Renewable Energy
Medicinal Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,749
1,230
0.447
* Total Citation Counts Rankings
Ranking Based On Selection :16
Biochemistry
Organic and Medicinal Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,670
1,755
0.657
* Total Citation Counts Rankings
Ranking Based On Selection :17
photochemistry
dye sensitized solar cells
organic and inorganic synthesis
materials chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,360
881
0.373
* Total Citation Counts Rankings
Ranking Based On Selection :18
Medicinal Chemistry
Organo-Sulfur
Polychalcogenides
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,099
980
0.467
* Total Citation Counts Rankings
Ranking Based On Selection :19
Nanomaterials
Electrocatalysis
Electrochemistry
Solar Energy Conversion
Materials Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,056
441
0.214
* Total Citation Counts Rankings
Ranking Based On Selection :20
Analytical Chemistry
Environmental Chemistry
Water Treatment.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,911
1,049
0.549
* Total Citation Counts Rankings
Ranking Based On Selection :21
fluorescent sensors
carbon dots
electrodes
antimicrobial
troponin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,851
1,295
0.700
* Total Citation Counts Rankings
Ranking Based On Selection :22
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,719
1,576
0.917
* Total Citation Counts Rankings
Ranking Based On Selection :23
Electrochemistry
Materials Chemistry
Energy Storage
Environmental Chemistry
STEM Education
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,661
550
0.331
* Total Citation Counts Rankings
Ranking Based On Selection :24
Organic chemistry
medicinal chemistry
nanotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,651
1,116
0.676
* Total Citation Counts Rankings
Ranking Based On Selection :25
physical chemistry
biophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,457
343
0.235
* Total Citation Counts Rankings
Rankings
118,006
208
6
Ranking Based On Selection: 1
Hassan Me Azzazy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,567
4,379
0.511
Drug nanocarriers
biosensors
Molecular Diagnosis
Infectious diseases
wound dressings
* Total Citation Counts Rankings
Rankings
133,647
53
38
Ranking Based On Selection: 2
Najat Saliba
American University of Beirut
Beirut, Lebanon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,658
4,114
0.537
atmospheric chemistry
analytical chemistry
e-cigarette
tobacco
waterpipe
* Total Citation Counts Rankings
Rankings
151,876
56,881
35
Ranking Based On Selection: 3
Stefano Costanzi
American University
Washington, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,786
1,876
0.276
Computational Chemistry and Chemical Weapons Nonproliferation
* Total Citation Counts Rankings
Rankings
190,970
104
1
Ranking Based On Selection: 4
Mutasem Omar Sinnokrot
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,403
1,332
0.247
Physical Chemistry
Molecular Modeling
Computational Chemistry
* Total Citation Counts Rankings
Rankings
204,343
73,025
59
Ranking Based On Selection: 5
Douglas Fox
American University
Washington, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,041
2,368
0.470
Polymers
Nanocomposites
Ionic Liquids
Thermodynamics
Clay
* Total Citation Counts Rankings
Rankings
203,912
114
81
Ranking Based On Selection: 6
Kamal Bouhadir
American University of Beirut
Beirut, Lebanon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,052
2,049
0.406
Organic synthesis
Heterocyclic chemistry
Polymers
Biomaterials
* Total Citation Counts Rankings
Rankings
256,408
355
28
Ranking Based On Selection: 7
Mustafa Khamis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,954
1,717
0.434
Wastewater treatment
Novel Adsorbents
Kinetics and Thermodynamics in Solution
Micelles-dyes Interactions
Protein-Nucleic Ac
* Total Citation Counts Rankings
Rankings
289,796
184
2
Ranking Based On Selection: 8
Mohammad Raziq Al Imam
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,432
1,121
0.327
Supramolecular Chemistry
Organic Synthesis
Polymer
* Total Citation Counts Rankings
Rankings
297,011
59
5
Ranking Based On Selection: 9
M Tajammal Munir
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,336
2,963
0.888
Chemical & Environmental Eng.
Data Analytics
and Process Modelling & Control
* Total Citation Counts Rankings
Rankings
311,000
205
130
Ranking Based On Selection: 10
Ahmad El Hellani
American University of Beirut
Beirut, Lebanon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,157
2,386
0.756
Environmental Sciences
Organic Chemistry
Analytical Chemistry
Tobacco Regulatory Science
Toxicology
* Total Citation Counts Rankings
Rankings
317,733
210
135
Ranking Based On Selection: 11
Bilal R Kaafarani
American University of Beirut
Beirut, Lebanon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,077
1,334
0.434
Organic & Materials Chemistry
Transformative Education
* Total Citation Counts Rankings
Rankings
336,460
227
147
Ranking Based On Selection: 12
Houssam Rassy
American University of Beirut
Beirut, Lebanon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,869
1,409
0.491
* Total Citation Counts Rankings
Rankings
341,074
1,049
29
Ranking Based On Selection: 13
Tamer Shoeib
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,821
1,457
0.516
* Total Citation Counts Rankings
Rankings
345,654
231
148
Ranking Based On Selection: 14
Rami Al Oweini
American University of Beirut
Beirut, Lebanon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,775
1,561
0.563
inorganic nano-materials
water treatment
catalysis
materials science
* Total Citation Counts Rankings
Rankings
348,330
572
3
Ranking Based On Selection: 15
Irshad Ahmad
American University of Ras al Khaimah AURAK
Ras al-Khaimah, United Arab Emirates
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,749
1,230
0.447
Chemical Science
Asymmetric Catalysis
Material Science
Renewable Energy
Medicinal Chemistry
* Total Citation Counts Rankings
Rankings
356,474
1,122
32
Ranking Based On Selection: 16
Hatem Tallima
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,670
1,755
0.657
Biochemistry
Organic and Medicinal Chemistry
* Total Citation Counts Rankings
Rankings
392,258
278
176
Ranking Based On Selection: 17
Tarek Ghaddar
American University of Beirut
Beirut, Lebanon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,360
881
0.373
photochemistry
dye sensitized solar cells
organic and inorganic synthesis
materials chemistry
* Total Citation Counts Rankings
Rankings
427,766
721
71
Ranking Based On Selection: 18
Imad Abu-Yousef
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,099
980
0.467
Medicinal Chemistry
Organo-Sulfur
Polychalcogenides
* Total Citation Counts Rankings
Rankings
434,305
321
195
Ranking Based On Selection: 19
Lara I Halaoui
American University of Beirut
Beirut, Lebanon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,056
441
0.214
Nanomaterials
Electrocatalysis
Electrochemistry
Solar Energy Conversion
Materials Science
* Total Citation Counts Rankings
Rankings
457,481
350
212
Ranking Based On Selection: 20
Almuthanna Tuqan
American University of Beirut
Beirut, Lebanon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,911
1,049
0.549
Analytical Chemistry
Environmental Chemistry
Water Treatment.
* Total Citation Counts Rankings
Rankings
467,770
815
84
Ranking Based On Selection: 21
Mohammad H Al-Sayah
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,851
1,295
0.700
fluorescent sensors
carbon dots
electrodes
antimicrobial
troponin
* Total Citation Counts Rankings
Rankings
491,982
1,935
53
Ranking Based On Selection: 22
Mona A Mohamed
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,719
1,576
0.917
* Total Citation Counts Rankings
Rankings
503,743
1,368
4
Ranking Based On Selection: 23
Bolade Agboola
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,661
550
0.331
Electrochemistry
Materials Chemistry
Energy Storage
Environmental Chemistry
STEM Education
* Total Citation Counts Rankings
Rankings
505,616
884
6
Ranking Based On Selection: 24
Shagufta
American University of Ras al Khaimah AURAK
Ras al-Khaimah, United Arab Emirates
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,651
1,116
0.676
Organic chemistry
medicinal chemistry
nanotechnology
* Total Citation Counts Rankings
Rankings
548,076
983
108
Ranking Based On Selection: 25
Lucia Pappalardo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,457
343
0.235