Hopkins' Lab Publications

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Journal Articles

Submitted / In Preparation

110. Steinstra C, Haack A, Lee A, Hopkins WS,* Investigating the Rydberg States and Photodissociation Dynamics of XeAr using Velocity Map Imaging, 2023, (In Preparation)

Published

109. Ryan CRM, Haack A, Hopkins WS*, Predicting Ion-Solvent Clustering in Differential Mobility Spectrometry using Anharmonic Theory, ChemRxiv. Cambridge: Cambridge Open Engage; 2023 https://doi.org/10.26434/chemrxiv-2023-bn642

108. Dezalay J, Ryan CRM, Ieritano C, Hopkins WS, Fernandes I, Cammidege A, Stockett M, Nobel J, Bull J* Protomers of the green and cyan fluorescent protein chromophores investigated using action spectroscopy, Phys. Chem. Chem. Phys., 2023 (Accepted)

107. Ieritano C, Haack A, Hopkins WS,* MobCal-MPI 2.0: An Accurate and Parallelized Package for Calculating Field-Dependent Collision Cross Sections and Ion Mobilities, Analyst, 2023 (In Press)

106. Stienstra C, Ieritano C, Haack A, Hopkins WS,* Bridging the Gap between Differential Mobility, Log S, and Log P Using Machine Learning and SHAP Analysis, Anal. Chem., 2023, 95(27), 10309-10321

105. Ieritano C, Thomas P, Hopkins WS,* Argentiation: A Silver Bullet for Cannabinoid Separation by Differential Mobility Spectrometry and Tandem Mass Spectrometry, Anal. Chem., 2023, 95(22), 8668-8678

104. Bissonnette JR, Ryan CRM, Ieritano C, Hopkins WS,* Haack A,* First-principles Modeling of Preferential Solvation in Mixed-modifier Differential Mobility Spectrometry, J. Am. Soc. Mass Spectrom., 2023, 34(7), 1417-1427

103. Ieritano C, Haack A, Hopkins WS,* Chemical Transformations can Occur during DMS Separations; Lessons Learned from Beer’s Bittering Compounds, J. Am. Soc. Mass Spectrom., 2023, 34(7), 1315-1329

102. Haack A, Schaefer C, Zimmermann S, Hopkins WS,* Validation of field-dependent ion-solvent cluster modelling via direct measurement of cluster size distributions, J. Am. Soc. Mass Spectrom., 2023, 34(6), 1035-1046

101. Win Z-M, Cheong A, Hopkins WS,* Using machine learning to predict partition co-efficient (Log P) and distribution coefficient (Log D) from molecular descriptors and liquid chromatography retention time, J. Chem. Inform. Model., 2023, 63, 7, 1906-1913 (Cover Article)

100. Steinstra C, Coughlan NJA, Haack A, Carr PJJ, Crouse J, Featherstone J, Hopkins WS,* Investigating the Rydberg States and Photodissociation Dynamics of Kr2 using Velocity Map Imaging, Can. J. Chem., 2023 doi.org/10.1139/cjc-2022-0283 (Invited following Laidler Award)

99. Haack A, Hopkins, WS,* Kinetics in DMS: Modelling clustering and declustering reactions, J. Am. Soc. Mass Spectrom. (2022)

98. Ieritano C, Hopkins WS,* The hitchhiker's guide to dynamic ion–solvent clustering: applications in differential ion mobility spectrometry, Phys. Chem. Chem. Phys. (2022)

97. Ashworth EK, Coughlan NJA, Hopkins WS, Bieske EJ, Bull JN,*Excited-State Barrier Controls E → Z Photoisomerization in p-Hydroxycinnamate Biochromophores, J. Phys. Chem. Lett. (2022)

96. Montgomery CA, Jameel I, Cuzzucoli F, Chidley T, Hopkins WS,* Murphy GK,* σ-Holes in Iodonium Ylides: Halogen-Bond Activation of Carboxylic Acids, Phenols and Thiophenols May Enable Their X–H Insertion Reactions, Chem. Eur. J. (2022)

95. Ding X, Kumar, M, Zheng Z, Lee A, Hopkins WS, Attygalle AB*, Evidence of Gas-Phase Attachment of Molecular Oxygen to Deprotonated Hydroquinone During Ion-Mobility Mass SpectrometryJ. Am. Soc. Mass Spectrom. (2022)

94. Mashmoushi N, Campbell JL, DiLorenzo R, Hopkins WS,* Rapid separation and quantification of cannabinoids using differential mobility spectrometry and mass spectrometry, Analyst, (2022)

93. Bowesman CA, Akbari H, Hopkins WS, Yurchenko S, Tennyson J,* Fine and hyperfine resolved empirical energy levels of VO, J Quant Spect. Rad. Trans., (2022)

92. Ieritano C, Le Blanc JCY, Schneider BB, Haack A, Bissonnette JR, Hopkins WS,* Protonation-induced Chirality Drives Separation by Differential Ion Mobility Spectrometry, Angewandte Chemie Int. Ed. (2022) [Frontispiece]

91. Haack A, Bissonnette J, Ieritano C, Hopkins WS,* Improved First-Principles Model of Differential Mobility using Higher-Order Two-Temperature Theory, J. Am. Soc. Mass Spectrom, (2022)

90. Coughlan NJA, Stockett M, Kjaer C, Ashworth E, Bulman Page P, Meech S, Broensted Nielsen S, Blancafort L, Hopkins WS,* Bull J*, Action Spectroscopy of the Isolated Red Kaede Fluorescent Protein Chromophore, J. Chem. Phys., (2021)

89. Mashmoushi N, Juhasz DR, Coughlan NJA, Schneider BB, Le Blanc JCY, Guna M, Zeigler B, Campbell JL, Hopkins WS,* UVPD Spectroscopy of Differential Mobility-Selected Prototropic Isomers of Rivaroxaban, J. Phys. Chem. A, (2021) [cover article]

88. Villaneuva Heldmaier F, Coughlan NJA, Haack A, Huard R, Guna M, Schneider BB, Le Blanc JCY, Nooijen M, Campbell JL, Hopkins WS,* UVPD Spectroscopy of Differential Mobility-selected Prototropic Isomers of Protonated Adenine, Phys. Chem. Chem. Phys., (2021)

87. Coughlan NJA, Fu W, Guna M, Schneider BB, Le Blanc JCY, Campbell JL, Hopkins WS,* Electronic Spectroscopy of Differential Mobility-selected Prototropic Isomers of Protonated Para-Aminobenzoic Acid, Phys. Chem. Chem. Phys., (2021)

86. Ieritano C, Campbell JL, Hopkins WS,* Predicting Differential Ion Mobility Behaviour in silico using Machine Learning, Analyst, (2021)

85. Ieritano C, Lee A, Course J, Bowman Z, Mashmoushi N, Crossley PM, Friebe BJ, Campbell JL, Hopkins WS,* Determining Collision Cross Sections from Differential Ion Mobility Spectrometry, Anal. Chem., (2021)

84. Ieritano C, Hopkins WS,* ‘Thermometer’ Ions can Fragment Through and Unexpected Intramolecular Elimination: These are Not the Fragments You are Looking For, (2021)

83. Ieritano C, Hopkins WS,* Assessing Collision Cross Section Calculations Using MobCal-MPI with a Variety of Commonly Used Computational Methods, Mat. Today Commun., (2021)

82. Ieritano C, Rickert D, Featherstone J, Honek J, Campbell JL, Le Blanc JCY, Schneider B, Hopkins WS,* The Charge-State and Structural Stability of Peptides Conferred by Microsolvating Environments in Differential Mobility Spectrometry, J. Am. Soc. Mass Spectrom., (2021) [Cover Article]

81. Snowdon MR, Wang S, Mashmoushi N, Hopkins WS, Schipper DJ* Carboxylic acids as anchoring components on aluminum oxide for the alignment relay technique of single-walled carbon nanotubes, New J. Chem., (2021)

80. Sinclair GS, Claridge RCM, Kukor AJ, Hopkins WS, Schipper DJ* Non-Covalent Conformational Locking of Conjugated Polymers through Thiazole-N-Oxide S-O Interactions, Chem. Sci., (2021)

79. Piccolo K, McNeil B, Crouse J, Lim SJ, Bickers SC, Hopkins WS, Dieckmann T* Ligand Specificity and Affinity in the Sulforhodamine B Binding RNA Aptamer, Biochem Bioph Res Co, (2020)

78. Campbell JL,* Kalfe A, Bowman Z, Le Blanc JCY, Liu C, Hopkins WS,* Separating Chiral Isomers of Amphetamine and Methamphetamine using Chemical Derivatization and Differential Mobility Spectrometry, Analytical Science Advances, (2020)

77. Risticevic S, Souza-Silva EA, Gionfriddo E, Dell JR, Cochran J, Hopkins WS, Pawliszyn J,* Application of in vivo solid phase microextraction (SPME) in capturing metabolome of apple (Malus ×domestica Borkh.) fruit, Scientific Reports, (2020)

76. Ieritano C., Featherstone J., Guna M., Campbell J. L., Hopkins W. S.,* How hot are your ions in differential mobility spectrometry?, J. Am. Soc. Mass Spectrom., (2020)

75. Crouse J., Haack A., Benter T., Hopkins W. S.,* Understanding non-traditional differential mobility behavior: a case study of the tricarbastannatrane cation, N(CH2CH2CH2)3Sn+, J. Am. Soc. Mass Spectrom., (2020)

74. Coughlan N. J. A., Carr P. J. J., Walker S. C., Zhou C., Guna M., Campbell J .L., Hopkins W. S.,* Measuring Electronic Spectra of Differential Mobility-Selected Ions in the Gas Phase, J. Am. Soc. Mass Spectrom., (2020)

73. Haack A., Crouse J., Schleuter F-J., Benter T., Hopkins W. S.,* A First Principles Model of Differential Mobility Spectrometry: The Effect of Ion-Solvent Clustering, J. Am. Soc. Mass Spectrom., (2019)

72. Coughlan N. J. A., Liu C., Lecours M. J., Campbell J. L., Hopkins W. S.,* Preferential ion microsolvation in mixed-modifier environments observed using differential mobility spectrometry, J. Am. Soc. Mass Spectrom., 30(11), 2222-2227 (2019)

71. Ieritano C., Campbell J. L., Hopkins W. S.,* Unravelling the factors that drive separation in differential mobility spectrometry: A case study of regioisomeric phosphatidylcholine adducts, Int. J. Mass Spectrom., (2019)

70. Cheng M., Rivas N., Lim S. J., Pichugin K., Petruk A. A., Klinkova A., Smith R., Hopkins W. S., Sciaini G.,* Trapping a Photoelectron behind a Repulsive Coulomb Barrier in Solution, J. Phys. Chem. Lett., (2019)

69. Chidley T., Jameel I., Rizwan S., Peixoto P. A., Pouysegu L., Quideau S.,* Hopkins W. S.,* Murphy G.,* Blue LED Irradiation of Iodonium Ylides Gives Diradical Intermediates for Efficient Metal-free Cyclopropanation with Alkenes, Angew. Chem. Int. Ed., (2019) [Cover Article]

68. Carr P. J. J., Warneke J., Featherstone J., Jenne C., Loire E., Hopkins W. S., The structure of proton-bound triethylammonia B12X122- (X=F, Cl) Clusters, Mol. Phys., (2019) [Invited]

67. Hopkins W. S.,* Verzilov V., Sciaini G., Burgess I., Boland M., et al., Establishing a Canadian free-electron laser research program, Can. J. Phys., (2019) [Cover Article]

66. Zhou C., Ieritano C., Hopkins W. S.,* Augmenting Basin-Hopping With Techniques from Unsupervised Machine Learning: Applications in Spectroscopy and Ion Mobility, Front. Chem., (2019)

65. Ieritano C., Crouse J., Campbell J. L., Hopkins W. S.,* A parallelized molecular collision cross section package with optimized accuracy and efficiency, Analyst, (2019)

64. Walker S. W. C., Anwar A., Psutka J. M., Crouse J., Liu C., Le Blanc J. C. Y., Montgomery J., Goetz G. H., Janiszewski J. S., Campbell J. L., Hopkins W. S.,* Determining molecular properties with differential mobility spectrometry and machine learning, Nat. Commun., (2018)

63. Hopkins W. S.,* Dynamic Clustering and Ion Microsolvation, Comprehensive Analytical Chemistry, vol. 83 - Advances in Ion Mobility-Mass Spectrometry; Fundamentals, Instrumentation, and Applications, (2018)

62. De Vlught I. J. S., Lecours M. J., Carr P. J. J., Anwar A., Marta R. A., Fillion E., Steinmetz V., Hopkins W. S.,* Infrared-Driven Charge-Transfer in Transition Metal-Containing B12X122- (X=H,F) Clusters, J. Phys. Chem. A, (2018)

61. Anwar, A., Psutka, J., Walker S. W. C., Dieckmann, T., Janiszewski, J. S., Campbell, J. L.,* Hopkins, W. S.,* Separating and Probing Tautomers of Protonated Nucleobases using Differential Mobility Spectrometry, Int J. Mass Spectrom., (2018) [Invited]

60. Psutka J.M., Dion-Fortier A., Dieckmann T., Campbell J. L., Segura P. A., Hopkins W. S.,* Identifying Fenton-reacted trimethoprim transformation products using differential mobility spectrometry, Anal. Chem., (2018)

59. Ieritano C., Featherstone J., Carr P. J. J., Marta R. A., Loire E., McMahon T. B., Hopkins W. S.,* The structures and properties of anionic tryptophan complexes, Phys. Chem. Chem. Phys., (2018)

58. Carr P. J. J., Lecours M. J., Burt M. J., Marta R., Steinmetz V., Fillion E., Hopkins W. S.,* Mode-Selective Laser Control of Palladium Catalyst Decomposition, J. Phys. Chem. Lett., (2017)

57. Walker S. W. C., Mark A., Verbuyst B., Bogdanov V., Campbell J. L.,* Hopkins W. S.,* Characterizing the tautomers of protonated aniline using differential mobility spectrometry and mass spectrometry, J. Phys. Chem. A, (2017)

56. Fu W., Hopkins W. S.,* Applying Machine Learning to Vibrational Spectroscopy, J. Phys. Chem. A, (2017)

55. Liu, C., Leblanc J.C.Y., Schneider, B., Shields, J., Federico, J., Zhang, H., Stroh, J., Kauffman, G., Kung, D., Ieritano, C., Shepherdson, E., Verbuyst, M., Melo, L., Hasan, M., Naser, D., Janiszewski, J.J.,* Hopkins, W. S.,* Campbell, J.L.,* Assessing physicochemical properties of drug molecules via microsolvation measurements with differential mobility spectrometry, ACS Cent. Sci., (2017) [Cover Article]

54. Lecours, M. J., Marchand, A., Hopkins, W. S., Gabelica, V.,* What Stoichiometries Determined by Mass Spectrometry Tell Us About the Ligand Binding Mode to G-quadruplex Nucleic Acids, Biochim. et Biophys. Acta: General Subjects, (2017) [Invited]

53. Lecours, M. J., Marta, R. A., Steinmetz, V., Keddie, N., O'Hagan, D,* Fillion, E., McMahon, T. B.,* Hopkins, W. S.,* Interaction of B12F122- with All-cis 1,2,3,4,5,6 Hexafluorocyclohexane in the Gas Phase, J. Phys. Chem. Letters, 8, 109-113 (2017)

52. Fu, W., Carr, P.J.J., Lecours, M.J., Burt, M., Marta, R.A.,Steinmetz, V., Fillion, E., McMahon, T. B., Hopkins, W. S.,* Intramolecular Cation-Pi Interactions in Protonated Phenylalanine Derivatives, Phys. Chem. Chem. Phys., DOI: 10.1039/C6CP07337A (2017)

51. Sinclair, G.S., Tran, R., Tao, J., Hopkins, W. S.,* Murphy, G.K.,* Borosilicate-Activation of (Difluoroiodo)toluene in gem-Difluorination of Diazo Compounds, Eur. J. Org. Chem., 27, 4603-4606 (2016) [Cover Article]

50. Simidzija, P., Lecours, M.J., Marta, R.A., Steinmetz, V., McMahon, T. B., Fillion, E.,* Hopkins, W. S.,* Changes in Tricarbastannatrane Transannular N-Sn Bonding Upon Complexation Reveals Lewis Base Donicity, Inorg. Chem., 55, 9579-9585 (2016)

49. Ritter, S.K., Two-faced polar molecular grabs both cations and anions, Chemical & Engineering News, 94(20), 8 (2016) [Research Highlight]

48. Fu, W., Xiong, J., Lecours, M.J., Carr, P.J.J., Marta, R.A., Fillion, E., McMahon, T. B., Steinmetz, V., Hopkins, W. S.,* The Structures of Proton-bound Dimers of Glycine with Phenylalanine and Pentafluorophenylalanine, J. Mol. Spectrosc., 330, 194-199 (2016)

47. Ziegler, B. E., Lecours, M. J., Steinmetz, V., Marta, R. A., Fillion, E., Hopkins, W. S., Keddie, N., O'Hagan, D.,* McMahon, T. B.,* The Remarkable Ionic Complexation Ability of All-cis 1,2,3,4,5,6 Hexafluorocyclohexane in the Gas Phase, J. Am. Chem. Soc., 138(24), 7460-7463 (2016) [Cover Article]

46. Campbell, J. L.,* Yang, A. M.-C., Melo, L. R., Hopkins, W. S.,* Whether probe or catalyst? When gas-phase hydrogen-deuterium exchange alters ion structure, J. Am. Soc. Mass Spectrom., 27(7), 1277-1284 (2016)

45. Ieritano, C., Carr, P. J. J, Hasan, M., Burt, M., Marta, R. A., Steinmetz, V., Fillion, E., McMahon, T. B., Hopkins, W. S.* The Structures and Properties of Proton- and Alkali-bound Cysteine Dimers, Physical Chemistry Chemical Physics, 18,  4704 - 4710 (2016)

44. Liu, C., Le Blanc, J. C. Y., Shields, J., Janiszewski, J. S., Ieritano, C., Ye, G. F., Hawes, G. F., Hopkins, W. S.,* Campbell, J. L.,* Using differential mobility spectrometry to measure ion solvation: An examiniation of the roles of solvents and ion structures in separating quinoline-based drugs, The Analyst, 140, 6897 – 6903 (2015) [Cover Article]

43. Hopkins, W. S.,* Carr, P. J. J., Huang, D., Bishop, K. P., Burt, M., McMahon, T. B., Steinmetz, V., Fillion, E., Infrared-driven Charge-transfer in Transition Metal B12F12 Clusters, The Journal of Physical Chemistry A, 119(31), 8469 – 8475 (2015) [Cover Article]

42. Hopkins, W. S.,* New View Author Profile, Molecular Physics, 113(21), 3159 – 3160 (2015) [Invited]

41. Hopkins, W. S.,* Determining the Properties of Gas-phase Clusters, Molecular Physics, 113(21), 3151 – 3158 (2015) [Invited, Cover Article]

40. Hopkins, W. S.,* Marta, R. A., McMahon, T. B.,* Mode-specific fragmentation of amino acid-containing clusters, Physical Chemistry Chemical Physics, 17(43), 28548 – 28555 (2014) [Cover Article]

39. Burt, M., Wilson, K., Marta, R. A., Hasan, M., Hopkins, W. S., McMahon, T. B.,* Assessing the Impact of Anion-P Effects on Phenylalanine Zwitterion Formation using IRMPD Spectroscopy, Physical Chemistry Chemical Physics, 16(44), 24223 – 24234 (2014)

38. Campbell, J. L., Zhu, M., Hopkins, W. S., Ion-Molecule Clustering in Differential Mobility Spectrometry: Lessons Learned from Tetraalkylammonium Cations and their Isomers, J. Am. Soc. Mass Spectrom., 25(9), 1583-1591 (2014)

37. Hopkins, W. S., Hasan, M., Burt, M., Marta, R. A., Fillion, E. F., McMahon, T. B., Persistent Intramolecular C-H***X (X = O or S) Hydrogen-Bonding in Benzyl Meldrum's Acid Derivatives, J. Phys. Chem. A, 118, 3795 - 3803 (2014)

36. Lecours, M. J., Chow, W. C. T., Hopkins, W. S., Density Functional Theory Study of RhnS0,+/- and Rhn+1 (n = 1 - 9), J. Phys. Chem. A, 118, 4278 - 4287 (2014) [Cover Article]

35. Hopkins, W. S., Marta, R. A., McMahon, T. B., Proton-Bound 3-Cyanophenylalanine Trimethylamine Clusters: Isomer-Specific Fragmentation pathways and Evidence of Gas-Phase Zwitterions, J. Phys. Chem. A, 117, 10714 - 10718 (2013)

34. Horiuchi, N., Acoustics: Fibre-optic pickup, Nature Photonics, 6, 80 (2012) [Research Highlight]

33. Hopkins, W. S., Mackenzie, S. R., Dissociation dynamics of the low-lying Rydberg states of Xe2: a velocity map imaging study, Mol. Phys., 110, 2465 - 2475 (2012)

32. Hermes, A. C., Hamilton, S. M., Hopkins, W. S., Harding, D. J., Kerpal, C., Meijer, G., Fielicke, A., Mackenzie, S. R., Cooperative binding effects on infrared driven cluster surface reactivity: N2O dissociation on rhodium oxide clusters, RhnO+, J. Phys. Chem. Letters, 2, 3053 - 3055 (2011)

31. Forthomme, D., Linton, C., Read, A., Tokaryk, D. W., Adam, A. G., Downie, L. E., Granger, A. D., Hopkins, W. S., Unravelling the Visible Spectrum of Strontium Monomethoxide, J. Mol. Spectrosc., 270(2), 108 - 115 (2011)

30. Hopkins, W. S., Mackenzie, S. R., Imaging Wavefunctions in Dissociative Photoionization, J. Chem. Phys., 135, 081104-1 - 081104-3 (2011)[Communication]

29. Hopkins, W. S., Lipciuc, M.L., Gardiner, S. H., Vallance, C., RG+ formation following photolysis of NO-RG via the A - X transition: a velocity map imaging study, J. Chem. Phys., 135, 034308-1 - 034308-9 (2011)

28. Hamilton, S. M., Hopkins, W. S., Harding, D. J., Walsh, T. R., Grune, P., Haertelt, M., Fielicke, A., Meijer, G., Mackenzie, S. R., Infrared Induced Reactivity of N2O on the Surface of Isolated Size-Selected Rhodium Clusters, J. Phys. Chem. A, 115, 2489 - 2497 (2011)

27. Hopkins, W. S., Woodham, A. P., Plowright, R. J., Wright, T.G., Mackenzie, S. R., Xe+ formation following photolysis of Au-Xe: a velocity map imaging study, J. Chem. Phys. 134, 094311-1 - 094311-7 (2011)

26. Hopkins, W. S., Woodham, A. P., Tonge, N. M., Ellis, A. M., Mackenzie, S. R., Photodissociation dynamics of Li(NH3)4: a velocity map imaging study, J. Phys. Chem. Letters, 2, 257-261 (2011)

25. Harding, D. J., Grune, P., Haertelt, M., Meijer, G., Fielicke, A., Hamilton, S. M., Hopkins, W. S., Mackenzie, S. R., Neville, S., Walsh, T. R., Probing the structures of gas-phase rhodium cluster cations by far-infrared spectroscopy, J. Chem. Phys., 133,214304-1 - 214304-9 (2010)

24. Hopkins, W. S., Woodham, A. P., Plowright, R. J., Wright, T. G., Mackenzie, S. R., A velocity map imaging study of gold-rare gas complexes: Au-Ar, Au-Kr and Au-Xe, J. Chem. Phys., 132, 214303-1 - 214303-9 (2010)

23. Harding, D. J., Walsh, T. R., Hamilton, S. M., Hopkins, W. S., Mackenzie, S. R., Grune, P., Haertelt, M., Meijer, G., Fielicke, A., The structure of Rh8+ in the gas phase, J. Chem. Phys., 132, 011101-1 - 011101-4 (2010) [Communication]

22. Hamilton, S. M., Hopkins, W. S., Harding, D. J., Walsh, T. R., Grune, P., Haertelt, M., Fielicke, A., Meijer, G., Mackenzie, S. R., Infrared Induced Reactivity on the Surface of Isolated Size-Selected Clusters: Dissociation of N2O on Rhodium Clusters, J. Am. Chem. Soc., 132, 1445-1449 (2010)[Communication]

21. Harding, D. J., Walsh, T. R., Hamilton, S. M., Hopkins, W. S., Mackenzie, S. R., Grune, P., Haertelt, M., Meiejer, G., Fielicke, A., The Structure of Rh8+ in the Gas Phase, arXiv: 0909.5546 (2009)

20. Hopkins, W. S., Hamilton, S. M., MNaughter, P. D., Mackenzie, S. R., VUV photodissociation dynamics of diatomic gold, Au2: A velocity map imaging study at 157nm, Chem. Phys. Lett., 483, 10-15, (2009) [Editor's Choice]

19. Hopkins, W. S., Hmailton, S. M., Mackenzie, S. R., The electronic spectrum of vanadium monoxide across the visible: New bands and new insight, J. Chem. Phys., 130, 144308-1 - 144308-8, (2009)

18. Loock, H.-P., Hopkins, W. S., Morris-Blair, C., Resendes, R., Saari, J., Trefiak, N., Recording the sound of musical instruments with FBGs: the photonic pickup, Applied Optics, 48(14), 2735-2741 (2009)

17. Linton, C., Ross, A. J., Adam, A. G., Crozet, P., Downie, L. E., Granger, A. D., Hopkins, W. S., Isotopic study of the B2A1 -X2A1 transition of calcium monomethoxide using laser excitation and popular depletion spectroscopy, J. Mol. Spectrosc., 250, 98 -105 (2008)

16. Hopkins, W. S., Loock, H.-P., Cronin, B., Nix, M. G. D., Devine, A. L., Dixon, R.N., Ashfold, M.N.R., Yin, H.-M., Rowling, S. J., Bull, A., Kable, S. H., Quantitative (J, N, K) Product State distributions near the Triplet Threshold for the Reaction H2CO -> H + HCO Measured by Rydberg Tagging and Laser-Induced Fluorescence, J. Phys. Chem. A., 112(39), 9283-9289 (2008)

15. Hopkins, W. S., Loock, H.-P., Cronin, B., Devine, A. L., Nix, M. G. D., Dixon, R. N., Ashfold, M. N. R., (2007) Photodissociation dynamics of formaldehyde: the H2CO -> H + HCO product channel, J. Chem. Phys., 127: 064301-1 – 064301-11

14. Adam, A. G., Hopkins, W. S., Sha, W., Tokaryk, D. W. (2006) High Resolution Laser Spectroscopy of the Titanium Monohalides, TiCl and TiBr. J. Mol Spectrosc., 236, 42 – 51

13. Balfour, W. J., Li, R., Adam, A. G., Hopkins, W. S. (2005) Laser-induced Fluorescence Spectroscopy of Rhodium Monosulphide, J. Mol. Spectrosc., 234, 211 – 215

12. Ram, R. S., Hopkins, W. S., Adam, A. G., Bernath, P.F. (2005) Laser and Fourier Transform Emission Spectroscopy of TaCl, J. Mol. Spectrosc., 232, 358 – 368

11. Tokaryk, D. W., Adam, A. G., Hopkins, W. S., (2005) High Resolution Laser Spectroscopy of the ˜A2Pi - X2Sigma+ Transition of MgCCH, J. Mol. Spectrosc., 230, 54 – 61

10. Crozet, P., Ross, A. J., Linton, C., Adam, A. G., Hopkins, W. S., LeRoy, R. J. (2005) Geometry of the CaOCH3 Radical from Isotope Effects in the A2E - X2A1 Transition, J. Mol. Spectrosc., 229, 224 – 230

9. Adam, A. G., Hopkins, W. S., Tokaryk, D. W. (2004) High Resolution Visible Laser Spectroscopy of HfF, J. Mol. Spectrosc., 225, 1 – 7

Patents

8. Predicting Molecular Collision Cross-section using Differential Mobility Spectrometry, J. Larry Campbell, W. Scott Hopkins, U.S. Patent No. 11,728,152 B2

7. Machine Learning Drug Evaluation Using Liquid Chromatographic Testing, Zaw M-W, Cheong A, Hopkins WS, USPTO 17/864,393 (2022)

6. Apparatus and Method for Parallel Flow Trapped Ion Mobility Spectrometry, W. Scott Hopkins, Janusz Pawliszyn, Provision Patent Filed: February 13th, 2018. U.S. Patent No. 62/629,763

5. Predicting Molecular Properties using Differential Mobility Spectrometry, J. Larry Campbell, W. Scott Hopkins, Provision Patent Granted: November 22nd, 2017. License Number: 564,156

4. Optical Pickup for a Musical Instrument, Hans-Peter Loock, W. Scott Hopkins, Nicholas R. Trefiak, Jonathan Saari, Rui Resendes U.S. Patent No. 61-105624, Filed: October 15th, 2008. Canadian Patent Application No. 2682878

Technical Reports

3. Campbell JL, Hopkins WS, Predicting molecular properties using differential mobility spectrometry (Invention Disclosure for Patent Application) 27 July 2017

2. Hopkins, W. S., SCIEX Technical Report, SCIEX., (2013) Microsolvation studies of gas phase ions and development of next generation mass spectrometric techniques

1. Hopkins, W. S., Bayer Technical Report, Bayer Inc., (2000) Hydrohalogenation and Degradation Studies of Butyl Rubber