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Publications

 

  1. S Fenyk, HK Woodfield, TB Romsdahl, EJ Wallington, RE Bates, DA Fell, KD Chapman, T Fawcett and JL Harwood (2022) Overexpression of phospholipid: diacylglycerol acyltransferase in Brassica napus results in changes in lipid metabolism and oil accumulation. Biochemical Journal 479: 805–823. https://doi.org/10.1042/BCJ20220003 
  2. Smart, K.: Reyes, K.; Wilder, K., Acree, W.; Verbeck, G.; Golden, T., “Ionic liquids as stationary phases for the gas chromatographic separation of fentanyl analogues”, For. Chem. 31 (2022) 100452. 
  3. Austen Moss, Youngwoo Jang, Hong Wang*, and Francis D’Souza*, “Porphyrin Dimers with Conjugated Linker Exhibiting Charge-Transfer and Excitonic Coupling Characteristics”, submitted to ChemSusChem, 2022  
  4. Thomas, B.; Anderson, K.; W. De Silva, I.; Verbeck, G.; Taylor, S., “ATR-FTIR Spectroscopy is Sensitive to Thermal Decay of Bone Collagen” , App. Spect., Accepted (Sept. 2022)  
  5. P Liao, T Lechon, T Romsdahl, H Woodfield, S Fenyk, T Fawcett, E Wallington, RE Bates, ML Chye, KD Chapman, JL Harwood, S Scofield (2022) Transgenic manipulation of triacylglycerol biosynthetic enzymes in Brassica napus alters lipid-associated gene expression and lipid metabolism. Nature Scientific Reports 12, 3352. https://doi.org/10.1038/s41598-022-07387-x 
  6. Austen Moss, Dustin E. Nevonen, Yi Hu, Vladimir N. Nesterov, Viktor Nemykin* and Hong Wang*, “Unsymmetrical Pentacene- and Pentacenequinone-Fused Porphyrins: Understanding the Effect of Cross- and Linear-Conjugation”, ACS Phys. Chem. Au, 2022, 2, 6, 468-481.
  7. Johnston C, García Navarrete LT, Ortiz E, Romsdahl TB, Guzha A, Chapman KD, Grotewold E, Alonso AP (2022) Effective Mechanisms for Improving Seed Oil Production in Pennycress (Thlaspi arvense L.) Highlighted by Integration of Comparative Metabolomics and Transcriptomics. Frontiers in Plant Science 13:943585. doi: 10.3389/fpls.2022.943585. 
  8.  Jose Cortes Vazquez, Jacqkis Davis, Waad Alharbia, Alexia Moore, Vladimir N. Nesterov, Thomas Cundari, Hong Wang* and Weiwei Luo*, “Three component reaction of cyclohexanones, aryl amines and benzoylmethylene malonates: cooperative enamine-Brønsted acid approach to tetrahydroindoles”, ACS Omega, 2022, 7, 49, 45341-45346.
  9.  Austen Moss, Youngwoo Jang, Jacob Arvidson, Vladimir N. Nesterov, Francis D’Souza* and Hong Wang*, “Aromatic Heterobicycle-Fused Porphyrins: Impact on Aromaticity and Excited State Electron Transfer Leading to Long-Lived Charge Separation”, Chem. Sci., 2022, 13, 9880 – 9890. Highlighted in Inside Cover Page.
  10.  Jacqkis Davis, Mojgan Gharaee, Chamini V. Karunaratne, Jose Cortes Vazquez, Mikayla Haynes, Weiwei Luo, Vladimir N. Nesterov, Thomas Cundari* and Hong Wang,* “Asymmetric Synthesis of Chromans through Bifunctional Enamine-Metal Lewis Acid Catalysis”, Chem. Eur. J., 2022, 28(27), e202200224.
  11.  Ting Han, Youngwoo Jang, Jacob Arvidson, Francis D’Souza* and Hong Wang,* “Optical and Photophysical Properties of Platinum Benzoporphyrins with C2v and D2h Symmetry”, invited article, Journal of Porphyrins and Phthalocyanines, 2022, 26 (6), 458-468.
  12. E. H. Nisala Fernando, Jose Cortes Vazquez, Jacqkis Davis, Weiwei Luo, Vladimir N. Nesterov, and Hong Wang*, Can Primary Arylamines Form Enamine? Evidence, α-Enaminone, and [3+ 3] Cycloaddition Reaction, J. Org. Chem. 2021, 86, 14617−14626 
  13. Dhiraj Dokwal, Trevor B Romsdahl, Daniel A Kunz, Ana Paula Alonso, Rebecca Dickstein, Phosphorus deprivation affects composition and spatial distribution of membrane lipids in legume nodules, Plant Physiology, 2021;, kiaa115, https://doi.org/10.1093/plphys/kiaa115
  14. Romsdahl, T.B.; Kambhampati, S.; Koley, S.; Yadav, U.P.; Alonso, A.P.; Allen, D.K.; Chapman, K.D. (2021) Analyzing Mass Spectrometry Imaging Data of 13C-Labeled Phospholipids in Camelina sativa and Thlaspi arvense (Pennycress) Embryos. Metabolites, 11, 148. https://doi.org/10.3390/metabo 11030148.
  15. H Rolletschek, J Schwender, C König, KD Chapman, T Romsdahl, C Lorenz, HP Braun, P Denolf, K Van Audenhove, E Munz, N Heinzel, S Ortleb, T Rutten, S McCorkle, T Borysyuk, A Guendel, H Shi, M Vander Auwermeulen, S Bourot, L Borisjuk (2020) Cellular Plasticity in Response to Suppression of Storage Proteins in the Brassica napus Embryo. The Plant Cell, 32: 2383–2401. http://www.plantcell.org/content/plantcell/32/7/2383.full.pdf
  16. Sturtevant D, S Lu, Z-W Zhou, Y Shen, S Wang, J-M Song, J Zhong, DJ Burks, Z-Q Yang, Q-Y Yang, AE Cannon, C Herrfurth, I Feussner, L Borisjuk, E Munz, GF Verbeck, X Wang, RK Azad, B Singleton, JM Dyer, L-L Chen*, KD Chapman*, L Guo* (2020) The genome of jojoba (Simmondsia chinensis): a taxonomically-isolated species that directs wax-ester accumulation in its seeds. Science Advances, 6 (11), eaay3240. DOI: 10.1126/sciadv.aay3240
  17. Lu S, M Aziz, D Sturtevant, KD Chapman* and L Guo* (2020) Heterogeneous Distribution of Erucic Acid in Brassica napus Seeds. Frontiers in Plant Science Vol 10, 1744. https://doi.org/10.3389/fpls.2019.01744
  18. Siddhartha Kumar, Whitney A. Webre, Courtney Stewart, Francis D'Souza*, Hong Wang*, “A Synthetic Approach to -Functionalized Naphtho[2,3]porphyrins:, Org. Lett. 2020, 22, 18, 7078–7082.
  19. Weiwei Luo, Zhicheng Sun, E. H. Nisala Fernando, Vladimir N. Nesterov, Thomas R. Cundari* and Hong Wang*, “Formal Oxo- and Aza-[3+2] Reactions of α-Enaminones and Quinones: A Double Divergent Process and the Functions of Chiral Phosphoric Acid and Molecular Sieves”, Chem. Sci., 2020,11, 9386-9394. Cover page. 
  20. Yi Hu, Michael B. Thomas, Whitney A. Webre, Austen Moss, R. G. Waruna Jinadasa, Vladimir N. Nesterov, Francis D’Souza* and Hong Wang*, “Bisporphyrin-Fused Pentacenes Exhibiting Abnormal High Stability”, Angew. Chem. Int. Ed., 2020, 20250-20257.
  21. Michael B. Thomas, Siddhartha Kumar, Timothy Esquivel, Hong Wang*, and Francis D’Souza*, “Excited State Electron Transfer in A2 and A2B2 Functionalized Zinc Porphyrins Carrying Rigid and Flexible -Pyrrole -Extended Substituents”, Invited article, Journal of Porphyrins Phthalocyanines, 2020, 24, 904-919.
  22. Austen Moss, Zehua Zhou, Lin Jiang,* M. Graça H. Vicente,* Hong Wang*, Synthesis of highly water soluble tetrabenzoporphyrins and their application toward photodynamic therapy”, Invited article, Journal of Porphyrins Phthalocyanines, 2020, 24, 456-464.
  23. N.K. Ngo, S. Shao, H. Conrad, S.F. Sanders, F. D'Souza, T.D. Golden, "Synthesis, Characterization, and the Effects of Organo-grafted Nanoparticles in Nickel Coatings for Enhanced Corrosion Protection" Mater. Today Commun. 25, 101628 (2020).
  24. H.A. Conrad, T.D. Golden "Electrodeposited Zinc-Nickel Nanocomposite Coatings" in Nanocomposites: Recent Evolutions, ISBN:978-1-78985-012-3, Ch. 10, pp. 187-220 (2019).
  25. Weiwei Luo, Zhicheng Sun, E. H. Nisala Fernando, Vladimir N. Nesterov, Thomas R. Cundari* and Hong Wang*, “Asymmetric Ring-Opening of Donor−Acceptor Cyclopropanes with Primary Arylamines Catalyzed by a Chiral Heterobimetallic Catalyst”, ACS Catal., 2019, 9(9), 8285-8293.
  26. Yi Hu, Whitney A. Webre, Michael B. Thomas, Austen Moss, Sarah N. Hancock, Jacob Schaffner, Francis D'Souza* and Hong Wang*, “-Functionalized Push-Pull Opp-Dibenzoporphyrins as Sensitizers for Dye-Sensitized Solar Cells: The Role of the Phenylethynyl Bridge”, J. Mater. Chem. A, 2019, 7, 10712-10722.
  27. Michael B. Thomas, Yi Hu, Karl M. Kadish,* Hong Wang,* Francis D’Souza*, “Accelerated Charge Separation and Charge Stabilization with Improved Quantum Yields upon Cation Binding to a Fused Bis Zinc Porphyrin-Quinone Donor-Acceptor Conjugate”, J. Phys. Chem. C, 2019, 123, 36, 22066-22073.
  28. Siddhartha Kumar, Whitney Webre, Jacob Schaffner, Sheikh M. S. Islam, Francis D'Souza,* Hong Wang*, “A2 and A2B2 Benzoporphyrins as sensitizers for dye-sensitized solar cells”, Journal of Porphyrins and Phthalocyanines, 2019, 23, 599-610. Invited article.
  29. Siddhartha Kumar, Xiaoqin Jiang, Wenqian Shan, R. G. Waruna Jinadasa, Karl M. Kadish and Hong Wang*, “Functionalized Trans-A2B2 Push-Pull Tetrabenzoporphyrins”, Chem. Commun., 2018, 54, 5303-5306. Highlighted in back Cover page.
  30. M. B. Thomas, R. G. W. Jinadasa, Y. Hu, B. Schmitz, H. Wang* and F. D’Souza*, “β-functionalized zinc porphyrin coordinated to C60 donor-acceptor conjugates”, Can. J. Chem., 2018, 96 (9), 881-889.
  31. Y. Hu, S. Yellappa, M. B. Thomas, R. G. W. Jinadasa, A. Matus, M. Shulman, F. D’Souza*, Hong Wang*, “β-Functionalized push-pull opp-dibenzoporphyrins as sensitizers for dye-sensitized solar cells”, Chem. Asian J., 2017, 2749-2762
  32. Yi Hu, Michael B. Thomas, R. G. Waruna Jinadasa, Hong Wang* and Francis D’Souza*, “Competitive Energy and Electron Transfer in β-Functionalized Free-Base Porphyrin Zinc Porphyrin Dimer Axially Coordinated to C60”, Chem. Eur. J., 2017, 23, 12805-12814. Highlighted in Inside Cover Page.
  33. Chamini V. Karunaratne, Ryan G. Sarkisian, Jennifer Reeves, Yongming Deng, Kraig A. Wheeler, Hong Wang*, “Multicomponent Reaction through Cooperative Trio      Catalysis Incorporating Enamine, Brønsted Acid and Metal Lewis Acid Catalysis”, Org. Biomol. Chem., 2017,15, 4933-4936. Highlighted in Cover Page.
  34. R. G. Waruna Jinadasa, Michael B. Thomas, Yi Hu, Francis D’Souza* and Hong Wang*, “Investigation of the push-pull effects on β-functionalized benzoporphyrins bearing ethynylphenyl bridge”, Phys. Chem. Chem. Phys., 2017, 19, 13182-13188.
  35. Sturtevant D, Romsdahl TB, Yu X-H, Burks DJ, Azad RK, Shanklin J, Chapman KD (2019) Tissue-Specific Differences in Metabolites and Transcripts Contribute to the Heterogeneity of Ricinoleic Acid Accumulation in Ricinus communis L. (castor) Seeds. Metabolomics, 15: 1-14. 
  36. Lu S, Sturtevant D,  Aziz M  Jin C, Li Q, Chapman KD*, Guo L* (2018) Spatial analysis of lipid metabolites and expressed genes reveals tissue‐specific heterogeneity of lipid metabolism in high‐ and low‐oil Brassica napus L. seeds. Plant Journal 94: 915–932 doi: 10.1111/tpj.13959. *joint corresponding authors. Featured Article and Cover. See associated Research highlight- https://doi.org/10.1111/tpj.13966. Plant Journal 94 (6): 913-914.
  37. Sturtevant D, Aziz M. Chapman KD (2018) Visualizing the oilseed lipidome. Inform 29(4): 21-24. doi: 10.21748/inform.04.2018.21. American Oil Chemist’s Society.
  38. Yu, X-H, Cahoon, RE, Horn, PJ, Shi, H, Prakash, RR, Cai, Y, Hearney, M, Chapman, KD, Cahoon, EB, Schwender, J and Shanklin, J (2018), Identification of bottlenecks in the accumulation of cyclic fatty acids in camelina seed oil. Plant Biotechnology Journal 16(4): 926-938. doi: 10.1111/pbi.12839.
  39. Usher, S., Han, L., Haslam, R.P., Michaelson, L.V., Sturtevant, D., Aziz, M., Chapman, K.D., Sayanova, O. and Napier, J.A. (2017) Tailoring seed oil composition in the real world: optimising omega-3 long chain polyunsaturated fatty acid accumulation in transgenic Camelina sativa. Nature Scientific Reports, Jul 26;7(1):6570. doi: 10.1038/s41598-017-06838-0.
  40. Ivarson, E., Iven, T., Sturtevant, D., Ahlman, A., Cai, Y., Chapman, K., Feussner, I. and Zhu, L.H. (2017) Production of wax esters in the wild oil species Lepidium campestre. Industrial Crops and Products, 108, pp.535-542. doi:  10.1016/j.indcrop.2017.07.002.
  41. Aziz M, Sturtevant D, Winston J, Collakova E, Jelesko JG, Chapman KD (2017) MALDI-MS Imaging of Urushiols in Poison Ivy Stem. Molecules 22(5). pii: E711. doi: 10.3390/molecules22050711.
  42. Woodfield HK, Sturtevant D, Borisjuk L, Munz E, Guschina IA, Chapman KD, Harwood JL (2017) Spatial and temporal mapping of key lipid species in Brassica napus seeds. Plant Physiol. 173 (4) pp.1998-2009. http://www.plantphysiol.org/content/plantphysiol/173/4/1998.full.pdf
  43. Marmon SK, Sturtevant D, Herrfurth C, Chapman KD, Stymne S, Feussner I (2017) Two acyltransferases contribute differently to linolenic acid levels in seed oil. Plant Physiol. Vol. 173, pp. 2081–2095. http://www.plantphysiol.org/content/plantphysiol/173/4/2081.full.pdf.
  44. Sturtevant D, Dueñas ME, Lee YJ, Chapman KD (2017) Three-dimensional visualization of membrane phospholipid distributions in Arabidopsis thaliana seeds: A spatial perspective of molecular heterogeneity. Biochim Biophys Acta. 2017 Feb;1862(2):268-281. doi: 10.1016/j.bbalip.2016.11.012.
  45. Sturtevant D, Horn PJ, Kennedy C, Hinze L, Percy R, Chapman KD (2017) Lipid metabolites in seeds of diverse Gossypium accessions: molecular identification of a high oleic mutant allele. Planta Volume 245, Issue 3, pp 595–610.
  46. Sturtevant D, Lee YJ, Chapman KD (2016) Matrix assisted laser desorption/ionization-mass spectrometry imaging (MALDI-MSI) for direct visualization of plant metabolites in situ. Curr Opin in Biotech 37:53-60. doi: 10.1016/j.copbio.2015.10.004. Review.
  47. Ruch, A. A.; Handa, S.; Kong, F.; Nesterov, V. N.; Pahls, D. R.; Cundari, T. R.; Slaughter, L. M.* “Competing Amination and C-H Arylation Pathways in Pd/Xantphos-Catalyzed Transformations of Binaphthyl Triflates: Switchable Routes to Chiral Amines and Helicene Derivatives.” Organic & Biomolecular Chemistry 2016, 14, 8123-8140. Designated a “Hot Article.” 
  48. T.D. Golden, J. Tientong, A.M.A. Mohamed "Electrodeposition of Nickel-Molybdenum (Ni-Mo) Alloys for Corrosion Protection in Harsh Environments" Research Perspectives on Functional Micro- and Nanoscale Coatings, ISBN: 978-152-25-0066-7, IGI Global, pp 369-395 (2016).
  49. Huynh, V.; Sasiene, Z.J.; Mach, P.M.; Golden, T.D.; Verbeck, G.F., “Laser Ablation-Coupled with DAPNe-NSI-MS Applied to Redacted Documents”, Sci. & Just. 56 (2016) 329-340.
  50. Ecton, P.A.; Beatty, J.; Verbeck, G.F.; Lakshantha, W.; Rout, B.; Perez, J.M., “Low-energy Electron Irradiation of Preheated and Gas-exposed Single-Wall Carbon Nanotubes”, App. Surf. Sci. 387 (2016) 822.
  51. Hildebrand, Z.; Carlton, D.; Fontenot, B.; Meik, J.; Walton, J.; Thacker, J.; Korlie, S.; Shelor, C.P.; Kadjo, A.; Clark, A.; Usenko, S.; Hamilton, J.S.; Mach, P.; Verbeck, G.F.; Hudak, P.; Schug, K.A., “Temporal Variation in Groundwater Quality in the Permian Basin of Texas, a Region of Increasing Unconventional Oil and Gas Development”, Sci. Total Environ. 562 (2016) 906-913.
  52. Nnaji, C.N.; Mach, P.M.; Acheampong, J.S.; Falconer, T.M.; Verbeck, G.F., “Analysis of Trace Amounts of Adulterants Found in Powders/Supplements Utilizing Raman Spectroscopy coupled to Direct Analyte-Probed Nanoextraction-Nanospray Ionization-Mass Spectrometry”, Anal. Meth. 8 (2016) 4798.
  53. Hamilton, J.S.; Gorishek, E.L.; Mach, P.M.; Sturtevant, D.; Ladage, M.L.; Suzuki, N.; Padilla, P.A.; Mittler, R.’ Chapman, K.D.; Verbeck, G.F., “Evaluation of a custom single Peltier-cooled ablation cell for elemental imaging of biological samples in laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS)”, J. Anal. At. Spectrom., 31 (2016) 1030-1033.
  54. Suzuki N, Bassil E, Hamilton JS,Inupakutika MA, Zandalinas SI, Tripathy D; Luo, Y.; Dion, E.; Fukui, G.; Kumazaki, A.; Nakano, R.; Rivero, R.M.; Verbeck, G.F.; Azad, R.K.; Blumwald, E.; Mittler, R. “ABA Is Required for Plant Acclimation to a Combination of Salt and Heat Stress.” PLoS ONE 11 (1): e0147625. doi:10.1371/journal.pone.0147625 (2016).
  55. Phelps, M.; Sturtevant, D.; Chapman, K.D.; Verbeck, G.F., “Nanomanipulation-Coupled Matrix-Assisted Laser Desorption/ Ionization-Direct Organelle Mass Spectrometry: A Technique for the Detailed Analysis of Single Organelles”, J. Am. Soc. Mass Spectrom., 27 (2016) 187-193.
  56. Mansfield C.M.; Alloy, M.M.; Hamilton, J.; Verbeck, G.F.; Newton, K.; Klaine, S.J.; Roberts, A.P., “Photo-induced toxicity of titanium dioxide nanoparticles to Daphnia magna under natural sunlight”, Chemosphere, 120 (2015) 206-210.
  57. Elfakhani, M.; Torabi, S.; Hussein, D.; Mills, N.; Verbeck, G.F.; Mo, H., “Mevalonate deprivation mediates the impact of lovastatin on the differentiation of murine 3T3-F442A preadipocytes”, Experimental Biology and Medicine, 239 (2014) 293-301
  58. Jones, J.; Hoffmann, W.D.; Jesseph, A.V.; Verbeck, G.F.; Perez, J.M., “On the mechanism for plasma hydrogenation of Graphene”, Appl. Phys. Lett., 97 (2010) 233104.
  59. Barst, B; Gevertz, A; Chumchal, M; Smith, J; Rainwater, T; Drevnick, P; Hudelson, K; Hart, A; Verbeck, G; Roberts, A.; “Laser Ablation ICP-MS Co-localization of Mercury and Immune Response in Fish”, Environmental Science & Technology”, 45 (2011) 8982.
  60. Hadjar, O.; Schlatholter, T.; Davila, S.; Catledge, S.A.; Kuhn, K.; Kassan, S.; Kibelka, G.; Cameron, C.; Verbeck, G.F., “ IonCCD for Scan-Free Sector-Field Instruements: KeV ion Detection Induced Peak Shape and Detector Surface Artifacts”, J. Am. Soc. Mass Spectrom, 22 (2011) 1872.
  61. Wallace, N.M.; Hueske, E.Verbeck, G.F., “Ultra-Trace Analysis of Illicit Drugs from Transfer of Electrostatic Lift”, Sci. Jus., 51 (2011) 196.
  62. Clemons, K.; Wiley, R.; Waverka, K.N.; Fox, J.D.; Dziekonski, E.; Verbeck, G.F.; “Direct Analyte Probed Nanoextraction (DAPNe)-coupled to Nanospray Ionization-Mass Spectrometry of Drug Residues from Latent Fingerprints”, J. For. Sci., Accepted (May 2012).
  63. Tetrapyrazineplatinum(II) bis(tetrafluoroborate) acetonitrile hemisolvate
    P. J. Derry, X. Wang and B. W. Smucker Acta Cryst. (2008). E64, m1449    [ doi:10.1107/S1600536808033679 ]
  64. Horn PJ, Ledbetter NR, James CN, Hoffman WD, Case CR, Verbeck GF, Chapman KD (2011) Visualization of lipid droplet composition by direct organelle mass spectrometry. Journal of Biological Chemistry 286(5):3298-306. Faculty of 1000 recommended.*
  65. Horn PJ, Chapman KD (2011) Organellar lipidomics. Plant Signaling and Behavior 2011 Oct 1;6(10):1594-6. Addendum. Epub 2011 Oct 1. PMID: 21918374
  66. Horn PJ, Chapman KD (2012) Lipidomics in Tissues, Cells, and Subcellular Compartments. The Plant Journal 70: 69-80. Special Issue in High- Resolution Measurements in Plants.*
  67. Horn PJ, Joshi U, Behrendt AK, Chapman KD, Verbeck GF. (2012) On-stage liquid-phase lipid microextraction coupled to nanospray mass spectrometry for detailed, nano-scale lipid analysis. Rapid Communications in Mass Spectrometry. 2012 Apr 30; 26(8):957-62.
  68. Harris, A. N.; Chavious, M. D.; Hinojosa, B. R.; Petros, R. A. “Beyond platinum:  synthesis, characterization, and in vitro toxicity of Cu(II)-releasing polymer nanoparticles for potential use as a drug delivery vector,” Nanoscale Res. Lett, 2011, 6, 445. DOI:10.1186/1556-276X-6-445
  69. Ledbetter, N.R.; Walton, B.; Davila, P.; Hoffmann, W.D.; Ernest, R.; Verbeck, G.F., “Nanomanipulation-Coupled Nanospray Mass Spectrometry Applied to the Extraction and Analysis of Trace Analytes Found on Fibers”, J. Forensic Sci., xxx (2010) xxx..
  70. Grubbs, G.S.; Dewberry, C.T.; Cooke, S.A., Wei, L."The Shape of Perfluorobutyryl Fluoride, C3F7COF, in the Gas Phase", J. Mol. Struct., 973 (2010) 190.
  71. Brown, J. M.; Hoffmann, W.D.;Alvey, C.M.; Wood, A.R.; Verbeck, G.F., Petros, R. “OBOC Peptide Library Sequencing via High-Pressure Ammonia Cleavage Coupled with Nanomanipulation/Nanospray Mass Spectrometry” Anal. Biochem., 398 (2010) 7..