Publications

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Zhao, Y., Sørensen, E. R., Lindkvist, T. T., Kjær, C., Brøndsted Nielsen, M., Chen, L. & Brøndsted Nielsen, S. (2021). Triangular Rhodamine Triads and Their Intrinsic Photophysics Revealed from Gas-Phase Ion Fluorescence Experiments. Chemistry - A European Journal, 27(42), 10875-10882. https://doi.org/10.1002/chem.202101322

Zettergren, H., Reinhed, P., Støchkel, K., Schmidt, H. T., Cederquist, H., Jensen, J., Tomita, S., Nielsen, S. B., Hvelplund, P., Manil, B., Rangama, J. & Huber, B. A. (2006). Fragmentation and ionization of C₇₀and C₆₀ by slow ions of intermediate charge. The European Physical Journal D: Atomic, Molecular, Optical and Plasma Physics, 38, 299-306.

Zettergren, H., Adoui, L., Bernigaud, V., Cederquist, H., Haag, N., Holm, A. I. S., Huber, B., Hvelplund, P., Johansson, H., Kadhane, U., Koefoed-Larsen, M., Liu, B., Manil, B., Nielsen, S. B., Panja, S., Rangama, J., Reinhed, P., Schmidt, H. & Støchkel, K. (2009). Electron-Capture-Induced Dissociation of Microsolvated Di- and Tripeptide Monocations: Elucidation of Fragmentation Channels from Measurements of Negative Ions. ChemPhysChem, 10(9-10), 1619-1623. https://doi.org/10.1002/cphc.200800782

Zettergren, H., Domaracka, A., Schlathölter, T., Bolognesi, P., Díaz-Tendero, S., Łabuda, M., Tosic, S., Maclot, S., Johnsson, P., Steber, A., Tikhonov, D., Castrovilli, M. C., Avaldi, L., Bari, S., Milosavljević, A. R., Palacios, A., Faraji, S., Piekarski, D. G., Rousseau, P. ... Petrignani, A. (2021). Roadmap on dynamics of molecules and clusters in the gas phase. European Physical Journal D, 75(5), Artikel 152. https://doi.org/10.1140/epjd/s10053-021-00155-y

Wyer, J., Feketeová, L., Nielsen, S. B. & O'Hair, R. A. J. (2009). Gas phase fragmentation of protonated betaine and its clusters. Physical Chemistry Chemical Physics, (11), 8752-8758. https://doi.org/10.1039/b909653a

Wyer, J., Cederquist, H., Haag, N., Huber, B., Hvelplund, P., Johansson, H., Maisonny, R., Nielsen, S. B., Rangama, J., Rousseau, P. & Schmidt, H. (2009). On the hydrogen loss from protonated nucleobases after electronic excitation or collisional electron capture. European Journal of Mass Spectrometry, 15(6), 681-688. https://doi.org/10.1255/ejms.1039

Wyer, J., Ehlerding, A., Zettergren, H., Kirketerp, M.-B. S. & Nielsen, S. B. (2009). Tagging of Protonated Ala-Tyr and Tyr-Ala by Crown Ether Prevents Direct Hydrogen Loss and Proton Mobility after Photoexcitation: Importance for Gas-Phase Absorption Spectra, Dissociation Lifetimes, and Channels. Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory, 113(33), 9277-9285. https://doi.org/10.1021/jp904053d

Wyer, J. & Nielsen, S. B. (2010). Absorption in the Q-band region by isolated ferric heme⁺ and heme⁺(histidine) in vacuo. Journal of Chemical Physics, 133(8), 084306. https://doi.org/10.1063/1.3474998

Wyer, J. A., Støchkel, K. & Brøndsted Nielsen, S. (2012). Collisional electron transfer to photoexcited acceptor radical anions. Journal of Chemical Physics, 136(8), 084303. https://doi.org/10.1063/1.3682245

Wyer, J. & Nielsen, S. B. (2012). Absorption by Isolated Ferric Heme Nitrosyl Cations In Vacuo. Angewandte Chemie International Edition, 51(41), 10256-10260. https://doi.org/10.1002/anie.201206213

Wyer, J. & Nielsen, S. B. (2013). Spectroscopy of Ferric Heme and Protoporphyrin IX Ions In Vacuo. I S. B. Nielsen & J. A. Wyer (red.), Photophysics of Ionic Biochromophores (s. 117-139). Springer. https://doi.org/10.1007/978-3-642-40190-9_7

Wyer, J. A., Jørgensen, A., Pedersen, B. & Nielsen, S. B. (2013). Gas-phase spectroscopy of ferric heme-NO complexes. ChemPhysChem, 14(18), 4109-4113. https://doi.org/10.1002/cphc.201300843

Wyer, J. A., Kristensen, M. B., Jones, N. C., Hoffmann, S. V. & Nielsen, S. B. (2014). Kinetics of DNA duplex formation: A-tracts versus AT-tracts. Physical Chemistry Chemical Physics, 16(35), 18827-18839. https://doi.org/10.1039/c4cp02252a

Wyer, J. A., Byskov, C. S. & Nielsen, S. B. (2011). Gas-phase action spectroscopy of protoporphyrin IX (PP) and zinc-PP anions from 210 nm to 720 nm. International Journal of Mass Spectrometry, 308(1), 126-132. https://doi.org/10.1016/j.ijms.2011.08.015

Worm, E. S., Andersen, I. H., Andersen, J. U., Holm, A. I. S., Hvelplund, P., Kadhane, U., Nielsen, S. B., Poully, J.-C. & Støchkel, K. (2007). Photodissociation of dinucleotide ions in a storage ring. Physical Review A 75, 75(4), 042709. https://doi.org/10.1103/PhysRevA.75.042709

Wanko, M., Houmøller, J., Støchkel, K., Suhr Kirketerp, M.-B., Petersen, M. Å., Nielsen, M. B., Nielsen, S. B. & Rubio, A. (2012). Substitution effects on the absorption spectra of nitrophenolate isomers. Physical Chemistry Chemical Physics, 14(37), 12905-11. https://doi.org/10.1039/c2cp41636k

Vogt, E., Langeland, J., Kjær, C., Lindkvist, T. T., Kjaergaard, H. G. & Nielsen, S. B. (2021). Effect of Freezing out Vibrational Modes on Gas-Phase Fluorescence Spectra of Small Ionic Dyes. Journal of Physical Chemistry Letters, 12(46), 11346-11352. https://doi.org/10.1021/acs.jpclett.1c03259

Urbina, R. C., Andersen, J. U., Forster, J. S., Hvelplund, P., Nielsen, S. B., Pedersen, U. V., Rangama, J. & Tomita, S. (2004). Photophysics of gaseous protoporphyrine and heme ions: excited state lifetimes and quantum yields. Journal of Chemical Physics, 120, 5067.

Turecek, F., Jones, J. W., Towle, T., Panja, S., Nielsen, S. B., Hvelplund, P. & Paizs, B. (2008). Hidden Histidine Radical Rearrangements upon Electron Transfer to Gas-Phase Peptide Ions.Experimental Evidence and Theoretical Analysis. Journal of the American Chemical Society, 130, 14584-14596.

Turecek, F., Jones, J. W., Holm, A. I. S., Panja, S., Nielsen, S. B. & Hvelplund, P. (2009). Transition metals as electron traps. I. Structures, energetics, electron capture, and electron-transfer-induced dissociations of ternary copper-peptide complexes in the gas phase. Journal of Mass Spectrometry, 44(5), 707-724. https://doi.org/10.1002/jms.1546

Turecek, F., Panja, S., Wyer, J., Ehlerding, A., Zettergren, H., Nielsen, S. B., Hvelplund, P., Bythell, B. & Paizs, B. (2009). Carboxyl-Catalyzed Prototropic Rearrangements in Histidine Peptide Radicals upon Electron Transfer: Effects of Peptide Sequence and Conformation. Journal of the American Chemical Society, 131(45), 16472-16487. https://doi.org/10.1021/ja9050229

Turecek, F., Holm, A. I. S., Panja, S., Nielsen, S. B. & Hvelplund, P. (2009). Transition metals as electron traps. II. Structures, energetics and electron transfer dissociations of ternary Co, Ni and Zn-peptide complexes in the gas phase. Journal of Mass Spectrometry, 44(10), 1518-1531. https://doi.org/10.1002/jms.1642

Turecek, F., Chung, T. W., Moss, C. L., Wyer, J., Ehlerding, A., Holm, A. I. S., Zettergren, H., Nielsen, S. B., Hvelplund, P., Chamot-Rooke, J., Bythell, B. & Paizs, B. (2010). The Histidine Effect. Electron Transfer and Capture Cause Different Dissociations and Rearrangements of Histidine Peptide Cation-Radicals. Journal of the American Chemical Society, 132(31), 10728-10740. https://doi.org/10.1021/ja907808h

Tomita, S., Andersen, J. U., Bonderup, E., Hvelplund, P., Liu, B., Nielsen, S. B., Pedersen, U. V., Rangama, J., Hansen, K. & Echt, O. (2005). Dynamic Jahn-Teller effects in isolated C₆₀^- studied by near-infrared spectroscopy in a storage ring. Physical Review Letters, 94, 053002.

Tomita, S., Forster, J. S., Hvelplund, P., Jensen, A. S. & Nielsen, S. B. (2001). High energy collisions of protonated water clusters. The European Physical Journal D: Atomic, Molecular, Optical and Plasma Physics, 16, 119.

Tomita, S., Forster, J. S., Hvelplund, P. & Nielsen, S. B. (2002). Coincidence studies of O₂^-, O^- and electron formation in electron stripping of cationic biomolecules by molecular oxygen. Int. J. Mass. Spectrom., 214, 57.

Tomita, S., Hvelplund, P. & Nielsen, S. B. (2002). C₅₉-ion formation in high-energy collisions between cold C₆₀ and noble gases. Physical Review A, 65, 4320.

Tomita, S., Andersen, J. U., Concina, B. J. M. F., Hvelplund, P., Liu, B., Nielsen, S. B., Cederquist, H., Jensen, J., Schmidt, H. T., Zettergren, H., Echt, O., Forster, J. S., Hansen, K., Huber, B. A., Manil, B., Maunoury, L. & Rangama, J. (2006). Lifetimes of C₆₀^2- and C₇₀^2- dianions in a storage ring. I P. D. Fainstein (red.), Photonic, Electronic and Atomic Collisions <Forlag uden navn>.

Tomita, S., Andersen, J. U., Cederquist, H., Concina, B. J. M. F., Echt, O., Forster, J. S., Hansen, K., Huber, B. A., Hvelplund, P., Jensen, J., Liu, B., Manil, B., Maunoury, L., Nielsen, S. B., Rangama, J., Schmidt, H. T. & Zettergren, H. (2006). Lifetimes of C₆₀^2- and C₇₀^2- dianions in a storage ring. Journal of Chemical Physics, 124, 024310.

Toker, J., Rahbek, D. B., Kiefer, H. V., Rajput, J., Antoine, R., Dugourd, P., Nielsen, S. B., Bochenkova, A. V. & Andersen, L. H. (2013). Photoresponse of the protonated Schiff-base retinal chromophore in the gas phase. Physical Chemistry Chemical Physics, 15, 19566-19569. https://doi.org/10.1039/c3cp51759d

Toker, Y., Langeland, J., Gruber, E., Kjaer, C., Nielsen, S. B., Andersen, L. H., Bonin, V. A. & Schapiro, I. (2018). Counterion-controlled spectral tuning of the protonated Schiff-base retinal. Physical Review A, 98(4), Artikel 043428. https://doi.org/10.1103/PhysRevA.98.043428

Toft Lindkvist, T., Djavani-Tabrizi, I., Chen, L. & Brøndsted Nielsen, S. (2024). Freezing Conformers for Gas-Phase Förster Resonance Energy Transfer. ChemPlusChem, 89(12), Artikel e202400448. https://doi.org/10.1002/cplu.202400448

Taylor, C. J., Burke, R. M., Wu, B., Panja, S., Nielsen, S. B. & Dessent, C. (2009). Structural characterization of negatively charged glycosaminoglycans using high-enegy (50-150 keV) collisional activation. International Journal of Mass Spectrometry, 285(1-2), 70-77. https://doi.org/10.1016/j.ijms.2009.04.009

Svendsen, A., Bluhme, H., El-Ghazaly, M. A. O., Seiersen, K., Nielsen, S. B. & Andersen, L. H. (2005). Tuning the continuum ground state energy of NO₂^2- by water molecules. Physical Review Letters, 94, 223401-.

Sundén, A. E. K., Støchkel, K., Panja, S., Kadhane, U., Hvelplund, P., Nielsen, S. B., Zettergren, H., Dynefors, B. & Hansen, K. (2009). Heat capacities of freely evaporating charged water clusters. Journal of Chemical Physics, 130, 224308. https://doi.org/10.1063/1.3149784

Sunden, A. E. K., Stochkel, K., Hvelplund, P., Nielsen, S. B., Dynefors, B. & Hansen, K. (2018). Stabilities of protonated water-ammonia clusters. Journal of Chemical Physics, 148(18), Artikel 184306. https://doi.org/10.1063/1.5023620

Streletskiy, A. V., Hvelplund, P., Nielsen, S. B., Liu, B., Tomita, S., Goryunkov, A. A. & Boltalina, O. (2006). Differences in electronic properties of fluorinated and trifluoromethylated fullerenes revealed by their propensity for dianion formation. Journal of Chemical Physics, 124, 144306.

Stockett, M. H. & Nielsen, S. B. (2015). Communication: Does a single CH₃CN molecule attached to Ru(bipy)₃²⁺₃ affect its absorption spectrum? Journal of Chemical Physics, 142(17), Artikel 171102. https://doi.org/10.1063/1.4919781

Stockett, M. H., Musbat, L., Kjær, C., Houmøller, J., Toker, Y., Rubio, A., Milne, B. F. & Brøndsted Nielsen, S. (2015). The Soret absorption band of isolated chlorophyll a and b tagged with quaternary ammonium ions. Physical Chemistry Chemical Physics, 17, 25793-25798. https://doi.org/10.1039/c5cp01513h

Stockett, M. H. & Nielsen, S. B. (2016). Transition energies of benzoquinone anions are immune to symmetry breaking by a single water molecule. Physical Chemistry Chemical Physics, 18(10), 6996-7000. https://doi.org/10.1039/c5cp06095h

Stockett, M. H., Houmøller, J., Støchkel, K., Svendsen, A. & Brøndsted Nielsen, S. (2016). A cylindrical quadrupole ion trap in combination with an electrospray ion source for gas-phase luminescence and absorption spectroscopy. Review of Scientific Instruments, 87(5), Artikel 053103. https://doi.org/10.1063/1.4948316

Stockett, M. H., Houmoller, J. & Nielsen, S. B. (2016). Nile blue shows its true colors in gas-phase absorption and luminescence ion spectroscopy. Journal of Chemical Physics, 145(10), Artikel 104303. https://doi.org/10.1063/1.4962364

Stockett, M. H., Boesen, M., Houmoller, J. & Nielsen, S. B. (2017). Accessing the Intrinsic Nature of Electronic Transitions from Gas-Phase Spectroscopy of Molecular Ion/Zwitterion Complexes. Angewandte Chemie International Edition, 56(13), 3490-3495. https://doi.org/10.1002/anie.201611320

Stockett, M. H., Kjaer, C., Linder, M. K., Detty, M. R. & Nielsen, S. B. (2017). Luminescence spectroscopy of chalcogen substituted rhodamine cations in vacuo. Photochemical & Photobiological Sciences, 16(5), 779-784. https://doi.org/10.1039/c7pp00049a

Stockett, M. H., Kjær, C., Daly, S., Bieske, E. J., Verlet, J. R. R., Nielsen, S. B. & Bull, J. N. (2020). Photophysics of Isolated Rose Bengal Anions. The journal of physical chemistry. A, 124(41), 8429-8438. https://doi.org/10.1021/acs.jpca.0c07123

Støchkel, K., Kadhane, U., Andersen, J. U., Holm, A. I. S., Hvelplund, P., Kirketerp, M.-B. S., Koefoed-Larsen, M., Lykkegaard, M. K., Nielsen, S. B., Panja, S. & Zettergren, H. (2008). A new technique for time-resolved daughter ion mass spectrometry on the microsecond to millisecond time scale using an electrostatic ion storage ring. Review of Scientific Instruments, 79(023107).

Støchkel, K., Wyer, J., Kirketerp, M.-B. S. & Nielsen, S. B. (2010). Laser Pump-Probe Experiments on Microsecond to Millisecond Timescales at an Electrostatic Ion Storage Ring: Triplet-Triplet Absorption by Protoporphyrin-IX Anions. Journal of The American Society for Mass Spectrometry, 21(11), 1884-1888. https://doi.org/10.1016/j.jasms.2010.07.004

Støchkel, K., Nielsen, S. B. & Milne, B. F. (2011). Absorption spectrum of the firefly luciferin anion isolated in vacuo. Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory, 115(11), 2155-2159. https://doi.org/10.1021/jp110120c

Støchkel, K., Hansen, C. N., Houmøller, J., Nielsen, L. M., Anggara, K., Linares, M., Norman, P., Nogueira, F., Maltsev, O. V., Hintermann, L., Nielsen, S. B., Naumov, P. & Milne, B. F. (2013). On the Influence of Water on the Electronic Structure of Firefly Oxyluciferin Anions from Absorption Spectroscopy of Bare and Monohydrated Ions in Vacuo. Journal of the American Chemical Society, 135(17), 6485-6493. https://doi.org/10.1021/ja311400t

Sørensen, M., Forster, J. S., Hvelplund, P., Jørgensen, T. J. D., Nielsen, S. B. & Tomita, S. (2001). On the formation of radical dications of protonated amino acids in a 'microsolution' of water or acetonitrile their reactivity with the solvent. Chemistry - A European Journal, 7, 3214.

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Revideret 29.01.2024

Karin Vittrup