8. Lykkegaard, M.K., Zettergren, H., Kirketerp, M.-B.S., Ehlerding, A., Wyer, J.A., Kadhane, U.,
Brøndsted Nielsen, S.: Photodissociation of isolated ferric heme and heme-His cations in an
electrostatic ion storage ring. J. Phys. Chem. A 113, 1440–1444 (2009)
9. Calvo, M.R., Andersen, J.U., Hvelplund, P., Brøndsted Nielsen, S., Pedersen, U.V., Rangama,
J., Tomita, S., Forster, J.S.: Photophysics of protoporphyrin ions in vacuo: triplet-state
lifetimes and quantum yields. J. Chem. Phys. 120, 5067–5072 (2004)
10. Wyer, J.A., Ehlerding, A., Zettergren, H., Kirketerp, M.-B.S., Brøndsted Nielsen, S.: 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. J. Phys. Chem. A 113, 9277–9285 (2009)
11. Antoine, R., Dugourd, P.: Visible and ultraviolet spectroscopy of gas phase protein ions. Phys.
Chem. Chem. Phys. 13, 16494–16509 (2011)
12. Raevsky, O.A., Solovev, V.P., Solotnov, A.F., Schneider, H.J., Rudiger, V.: Conformation of
18-crown-5 and its influence on complexation with alkali and ammonium cations: Why 18crown-5 binds more than 1000 times weaker than 18C6. J. Org. Chem. 61, 8113–8116 (1996)
13. Julian, R.R., Beauchamp, J.L.: Site specific sequestering and stabilization of charge in peptides
by supramolecular adduct formation with 18-crown-6 ether by way of electrospray ionization.
Int. J. Mass Spectrom. 210, 613–623 (2001)
14. Wysocki, V.H., Tsaprailis, G., Smith, L.L., Breci, L.A.: Special feature: Commentary - Mobile
and localized protons: a framework for understanding peptide dissociation. J. Mass Spectrom.
35, 1399–1406 (2000)
15. Wysocki, V.H., Resing, K.A., Zhang, Q.F., Cheng, G.L.: Mass spectrometry of peptides and
proteins. Methods 35, 211–222 (2005)
16. Brøndsted Nielsen, S., Andersen, J.U., Forster, J.S., Hvelplund, P., Liu, B., Pedersen, U.V.,
Tomita, S.: Photodestruction of adenosine 5’-monophosphate (AMP) nucleotide ions in vacuo:
Statistical versus nonstatistical processes. Phys. Rev. Lett. 91, 048302 (2003)
17. Møller, S.P.: ELISA, and electrostatic storage ring for atomic physics. Nucl. Instrum. Methods
Phys. Res. A 394, 281–286 (1997)
18. Andersen, J.U., Hvelplund, P., Brøndsted Nielsen, S., Tomita, S., Wahlgreen, H., Møller, S.P.,
Pedersen, U.V., Forster, J.S., Jørgensen, T.J.D.: The combination of an electrospray ion source
and an electrostatic storage ring for lifetime and spectroscopy experiments on biomolecules.
Rev. Sci. Instrum. 73, 1284–1287 (2002)
19. Støchkel, K., Kadhane, U., Andersen, J.U., Holm, A.I.S., Hvelplund, P., Kirketerp, M.B.S.,
Larsen, M.K., Lykkegaard, M.K., Brøndsted Nielsen, S., Panja, S., Zettergren, H.: A new
technique for time-resolved daughter ion mass spectrometry on the microsecond to millisecond time scale using an electrostatic ion storage ring. Rev. Sci. Instrum. 79, 023107 (2008)
20. Kadhane, U., Andersen, J.U., Ehlerding, A., Hvelplund, P., Kirketerp, M.B.S., Lykkegaard, M.
K., Brøndsted Nielsen, S., Panja, S., Wyer, J.A., Zettergren, H.: Photodissociation of
protonated tryptophan and alteration of dissociation pathways by complexation with crown
ether. J. Chem. Phys. 129, 184304 (2008)
21. Kirketerp, M.B.S., Ryhding, T., Støchkel, K., Nielsen, M.B., Brøndsted Nielsen, S.: Role of
nearby charges on the electronic structure of pi-conjugated molecules: symmetric versus
asymmetric charge distributions in Oligo(p-phenyleneethynylene). J. Phys. Chem. A 115,
1222–1227 (2011)
22. Stochkel, K., Milne, B.F., Nielsen, S.B.: Absorption spectrum of the firefly luciferin anion
isolated in vacuo. J. Phys. Chem. A 115, 2155–2159 (2011)
23. Wyer, J.A., Nielsen, S.B.: Absorption by isolated ferric heme nitrosyl cations in vacuo.
Angew. Chem. Int. Ed. 51, 10256–10260 (2012)
24. Johnson, M.A., Lineberger, W. C. p. 591. In: Farrar, J. M., Saunders, W. (eds.) Techniques for
the Study of Gas-Phase Ion Molecule Reactions. Wiley, New York. (1988)
25. Marcum, J.C., Halevi, A., Weber, J.M.: Photodamage to isolated mononucleotidesphotodissociation spectra and fragment channels. Phys. Chem. Chem. Phys. 11, 1740–1751
(2009)
3 Experimental Techniques
43
Brøndsted Nielsen, S.: Photodissociation of isolated ferric heme and heme-His cations in an
electrostatic ion storage ring. J. Phys. Chem. A 113, 1440–1444 (2009)
9. Calvo, M.R., Andersen, J.U., Hvelplund, P., Brøndsted Nielsen, S., Pedersen, U.V., Rangama,
J., Tomita, S., Forster, J.S.: Photophysics of protoporphyrin ions in vacuo: triplet-state
lifetimes and quantum yields. J. Chem. Phys. 120, 5067–5072 (2004)
10. Wyer, J.A., Ehlerding, A., Zettergren, H., Kirketerp, M.-B.S., Brøndsted Nielsen, S.: 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. J. Phys. Chem. A 113, 9277–9285 (2009)
11. Antoine, R., Dugourd, P.: Visible and ultraviolet spectroscopy of gas phase protein ions. Phys.
Chem. Chem. Phys. 13, 16494–16509 (2011)
12. Raevsky, O.A., Solovev, V.P., Solotnov, A.F., Schneider, H.J., Rudiger, V.: Conformation of
18-crown-5 and its influence on complexation with alkali and ammonium cations: Why 18crown-5 binds more than 1000 times weaker than 18C6. J. Org. Chem. 61, 8113–8116 (1996)
13. Julian, R.R., Beauchamp, J.L.: Site specific sequestering and stabilization of charge in peptides
by supramolecular adduct formation with 18-crown-6 ether by way of electrospray ionization.
Int. J. Mass Spectrom. 210, 613–623 (2001)
14. Wysocki, V.H., Tsaprailis, G., Smith, L.L., Breci, L.A.: Special feature: Commentary - Mobile
and localized protons: a framework for understanding peptide dissociation. J. Mass Spectrom.
35, 1399–1406 (2000)
15. Wysocki, V.H., Resing, K.A., Zhang, Q.F., Cheng, G.L.: Mass spectrometry of peptides and
proteins. Methods 35, 211–222 (2005)
16. Brøndsted Nielsen, S., Andersen, J.U., Forster, J.S., Hvelplund, P., Liu, B., Pedersen, U.V.,
Tomita, S.: Photodestruction of adenosine 5’-monophosphate (AMP) nucleotide ions in vacuo:
Statistical versus nonstatistical processes. Phys. Rev. Lett. 91, 048302 (2003)
17. Møller, S.P.: ELISA, and electrostatic storage ring for atomic physics. Nucl. Instrum. Methods
Phys. Res. A 394, 281–286 (1997)
18. Andersen, J.U., Hvelplund, P., Brøndsted Nielsen, S., Tomita, S., Wahlgreen, H., Møller, S.P.,
Pedersen, U.V., Forster, J.S., Jørgensen, T.J.D.: The combination of an electrospray ion source
and an electrostatic storage ring for lifetime and spectroscopy experiments on biomolecules.
Rev. Sci. Instrum. 73, 1284–1287 (2002)
19. Støchkel, K., Kadhane, U., Andersen, J.U., Holm, A.I.S., Hvelplund, P., Kirketerp, M.B.S.,
Larsen, M.K., Lykkegaard, M.K., Brøndsted Nielsen, S., Panja, S., Zettergren, H.: A new
technique for time-resolved daughter ion mass spectrometry on the microsecond to millisecond time scale using an electrostatic ion storage ring. Rev. Sci. Instrum. 79, 023107 (2008)
20. Kadhane, U., Andersen, J.U., Ehlerding, A., Hvelplund, P., Kirketerp, M.B.S., Lykkegaard, M.
K., Brøndsted Nielsen, S., Panja, S., Wyer, J.A., Zettergren, H.: Photodissociation of
protonated tryptophan and alteration of dissociation pathways by complexation with crown
ether. J. Chem. Phys. 129, 184304 (2008)
21. Kirketerp, M.B.S., Ryhding, T., Støchkel, K., Nielsen, M.B., Brøndsted Nielsen, S.: Role of
nearby charges on the electronic structure of pi-conjugated molecules: symmetric versus
asymmetric charge distributions in Oligo(p-phenyleneethynylene). J. Phys. Chem. A 115,
1222–1227 (2011)
22. Stochkel, K., Milne, B.F., Nielsen, S.B.: Absorption spectrum of the firefly luciferin anion
isolated in vacuo. J. Phys. Chem. A 115, 2155–2159 (2011)
23. Wyer, J.A., Nielsen, S.B.: Absorption by isolated ferric heme nitrosyl cations in vacuo.
Angew. Chem. Int. Ed. 51, 10256–10260 (2012)
24. Johnson, M.A., Lineberger, W. C. p. 591. In: Farrar, J. M., Saunders, W. (eds.) Techniques for
the Study of Gas-Phase Ion Molecule Reactions. Wiley, New York. (1988)
25. Marcum, J.C., Halevi, A., Weber, J.M.: Photodamage to isolated mononucleotidesphotodissociation spectra and fragment channels. Phys. Chem. Chem. Phys. 11, 1740–1751
(2009)
3 Experimental Techniques
43