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Alan C. Hopkinson

Alan C. Hopkinson

York University
Canada

D-Index & Metrics

Chemistry

D-Index
46
Citations
8219
World Ranking
15992
National Ranking
434

Alan C. Hopkinson 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 Alan C. Hopkinson sits on this spectrum.

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 publications 1,295+

This scientist: 290 publications — 61st percentile

61% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

Alan C. Hopkinson 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 Alan C. Hopkinson sits on this spectrum.

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 D-Index 159+

This scientist: 46 D-Index — 12th percentile

12% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

Overview

Alan C. Hopkinson is a researcher affiliated with York University in Canada whose work spans several areas of chemistry and molecular biology. Their primary fields of study include Chemistry, and Biochemistry, Genetics and Molecular Biology, with a focus on specialized subfields such as Spectroscopy, Molecular Biology, and Organic Chemistry, among others.

Their research output consists of publications primarily centered on mass spectrometry techniques and applications, advanced chemical physics studies, and proteomics. Key research topics that feature across their body of work include:

  • Mass Spectrometry Techniques and Applications
  • Advanced Chemical Physics Studies
  • Advanced Proteomics Techniques and Applications
  • Protein Structure and Dynamics
  • Chemical Reaction Mechanisms
  • Metal-Catalyzed Oxygenation Mechanisms
  • Electron Spin Resonance Studies

Hopkinson has collaborated frequently with a number of coauthors, including Justin Kai-Chi Lau, K. W. Michael Siu, Giel Berden, Jos Oomens, and Yinan Li.

Their publications appear in various peer-reviewed scientific journals, with multiple contributions to:

  • The Journal of Physical Chemistry B
  • Computational and Theoretical Chemistry
  • Physical Chemistry Chemical Physics
  • Green Chemistry
  • PLoS ONE

Representative recent papers authored by Hopkinson include:

  • "Collision-induced dissociation of protonated fentanyl: A DFT study" (2020) published in Computational and Theoretical Chemistry
  • "Dissociative electron transfer of copper(ii) complexes of glycyl(glycyl/alanyl)tryptophan in vacuo: IRMPD action spectroscopy provides evidence of transition from zwitterionic to non-zwitterionic peptide structures" (2020) published in Physical Chemistry Chemical Physics
  • "An eco-friendly, low-cost, and automated strategy for phosphoproteome profiling" (2022) published in Green Chemistry
  • "Generation, Characterization, and Dissociation of Radical Cations Derived from Prolyl-glycyl-glycine" (2021) published in The Journal of Physical Chemistry B
  • "Structure and fragmentation chemistry of the peptide radical cations of glycylphenylalanylglycine (GFG)" (2024) published in PLoS ONE

Best Publications

  • Easily prepared air- and moisture-stable Pd-NHC (NHC=N-heterocyclic carbene) complexes: a reliable, user-friendly, highly active palladium precatalyst for the Suzuki-Miyaura reaction

    Christopher J. O'Brien;Eric Assen B. Kantchev;Cory Valente;Niloufar Hadei

  • Molecular radical cations of oligopeptides

    Ivan K. Chu;Christopher F. Rodriquez;‡ Tai-Chu Lau;and Alan C. Hopkinson

  • Pd-NHC (PEPPSI)Complexes: Synthetic Utility and Computational Studies into TheirReactivity

    Michael G. Organ;Gregory A. Chass;De-Cai Fang;Alan C. Hopkinson

  • Silver ion binding energies of amino acids: Use of theory to assess the validity of experimental silver ion basicities obtained from the kinetic method

    Tamer Shoeib;K. W. Michael Siu;Alan C. Hopkinson

  • Proton migration and tautomerism in protonated triglycine.

    Rodriquez Cf;Cunje A;Shoeib T;Chu Ik

  • Gas-Phase Fragmentation Reactions of Protonated Aromatic Amino Acids: Concomitant and Consecutive Neutral Eliminations and Radical Cation Formations

    Houssain El Aribi;Galina Orlova;and Alan C. Hopkinson;K. W. Michael Siu

  • Towards the rational design of palladium-N-heterocyclic carbene catalysts by a combined experimental and computational approach

    Christopher J. O'Brien;Eric Assen B. Kantchev;Gregory A. Chass;Niloufar Hadei

  • Elucidation of fragmentation mechanisms of protonated Peptide ions and their products: a case study on glycylglycylglycine using density functional theory and threshold collision-induced dissociation.

    Houssain El Aribi;Christopher F. Rodriquez;David R. P. Almeida;Yun Ling

  • Intrinsic Coordination Properties of Iron in FeO+: Kinetics at 294 .+-. 3 K for Gas-Phase Reactions of the Ground States of Fe+ and FeO+ with Inorganic Ligands Containing Hydrogen, Nitrogen, and Oxygen

    Vladimir Baranov;Gholamreza Javahery;Alan C. Hopkinson;Diethard K. Bohme

  • Copper-Mediated Peptide Radical Ions in the Gas Phase

    Elham Bagheri-Majdi;Yuyong Ke;Galina Orlova;Ivan K. Chu

  • Amination with Pd–NHC Complexes: Rate and Computational Studies on the Effects of the Oxidative Addition Partner

    Ka Hou Hoi;Selçuk Çalimsiz;Robert D. J. Froese;Alan C. Hopkinson

  • Amination with Pd-NHC complexes: rate and computational studies involving substituted aniline substrates.

    Ka Hou Hoi;Selçuk Çalimsiz;Robert D. J. Froese;Alan C. Hopkinson

  • Formation of molecular radical cations of enkephalin derivatives via collision-induced dissociation of electrospray-generated copper (II) complex ions of amines and peptides.

    Ivan K. Chu;Christopher F. Rodriguez;Alan C. Hopkinson;K. W. Michael Siu

  • Theoretical Study on the Proton Affinity of Small Molecules Using Gaussian Basis Sets in the LCAO-MO-SCF Framework

    A. C. Hopkinson;N. K. Holbrook;K. Yates;I. G. Csizmadia

  • A comparison of copper(I) and silver(I) complexes of glycine, diglycine and triglycine

    Tamer Shoeib;Christopher F. Rodriquez;K. W. Michael Siu;Alan C. Hopkinson

  • Radical cations of amino acids and peptides: Structures and stabilities

    Unknown

  • Density functional theory investigation of the alkyl-alkyl Negishi cross-coupling reaction catalyzed by N-heterocyclic carbene (NHC)-Pd complexes.

    Gregory A. Chass;Christopher J. O'Brien;Niloufar Hadei;Eric Assen B Kantchev

  • Are the Radical Centers in Peptide Radical Cations Mobile? The Generation, Tautomerism, and Dissociation of Isomeric α-Carbon-Centered Triglycine Radical Cations in the Gas Phase

    Ivan K. Chu;Junfang Zhao;Minjie Xu;Shiu On Siu

  • A Study of Silver (I) Ion−Organonitrile Complexes: Ion Structures, Binding Energies, and Substituent Effects

    Tamer Shoeib;Houssain El Aribi;and K. W. Michael Siu;Alan C. Hopkinson

  • Corannulene as a Lewis base: computational modeling of protonation and lithium cation binding.

    Maxim V. Frash;and Alan C. Hopkinson;Diethard K. Bohme

  • Characterization of the product ions from the collision-induced dissociation of argentinated peptides.

    Ivan K. Chu;Tamer Shoeib;Xu Guo;Christopher F. Rodriquez

Frequent Co-Authors

K. W. Michael Siu
K. W. Michael Siu University of Windsor
Diethard K. Bohme
Diethard K. Bohme York University
Imre G. Csizmadia
Imre G. Csizmadia University of Toronto
Jos Oomens
Jos Oomens Radboud University
Ivan K. Chu
Ivan K. Chu University of Hong Kong
Giel Berden
Giel Berden Radboud University
Michael G. Organ
Michael G. Organ University of Ottawa
Robert C. Dunbar
Robert C. Dunbar Case Western Reserve University
Tai-Chu Lau
Tai-Chu Lau City University of Hong Kong
František Tureček
František Tureček University of Washington

External Links

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Best Scientists Citing Alan C. Hopkinson

Jos Oomens

Jos Oomens

Radboud University

Publications: 82

Michael G. Organ

Michael G. Organ

University of Ottawa

Publications: 62

Helmut Schwarz

Helmut Schwarz

Technical University of Berlin

Publications: 47

Diethard K. Bohme

Diethard K. Bohme

York University

Publications: 44

Richard A. J. O'Hair

Richard A. J. O'Hair

University of Melbourne

Publications: 41

P. B. Armentrout

P. B. Armentrout

University of Utah

Publications: 32

Detlef Schröder

Detlef Schröder

Czech Academy of Sciences

Publications: 31

Ivan K. Chu

Ivan K. Chu

University of Hong Kong

Publications: 30

Giel Berden

Giel Berden

Radboud University

Publications: 29

Alex G. Harrison

Alex G. Harrison

University of Toronto

Publications: 20

Béla Paizs

Béla Paizs

Bangor University

Publications: 20

Philippe Dugourd

Philippe Dugourd

Claude Bernard University Lyon 1

Publications: 17

Evan R. Williams

Evan R. Williams

University of California, Berkeley

Publications: 17

Steven P. Nolan

Steven P. Nolan

Ghent University

Publications: 16

František Tureček

František Tureček

University of Washington

Publications: 15

Rodolphe Antoine

Rodolphe Antoine

Claude Bernard University Lyon 1

Publications: 15

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