6. Gromov, E.V., Burghardt, I., Koppel, H., Cederbaum, L.S.: Photoinduced isomerization of the
photoactive yellow protein (PYP) chromophore: interplay of two torsions, a HOOP mode and
hydrogen bonding. J. Phys. Chem. A 115, 9237–9248 (2011)
7. Wanko, M., Garcia-Risueno, P., Rubio, A.: Excited states of the green fluorescent protein
chromophore: performance of ab initio and semi-empirical methods. Phys. Status Solidi. B
Basic Solid State Phys. 249, 392–400 (2012)
8. Toker, Y., Rahbek, D.B., Klærke, B., Bochenkova, A.V., Andersen, L.H.: Direct and indirect
electron emission from the green fluorescent protein chromophore. Phys. Rev. Lett. 109,
128101 (2012)
9. Mooney, C.R.S., Sanz, M.E., McKay, A.R., Fitzmaurice, R.J., Aliev, A.E., Caddick, S.,
Fielding, H.H.: Photodetachment spectra of deprotonated fluorescent protein chromophore
anions. J. Phys. Chem. A 116, 7943–7949 (2012)
10. Horke, D.A., Verlet, J.R.R.: Photoelectron spectroscopy of the model GFP chromophore
anion. Phys. Chem. Chem. Phys. 14, 8511–8515 (2012)
11. Nielsen, I.B., Boye-Peronne, S., El Ghazaly, M.O.A., Kristensen, M.B., Brøndsted Nielsen, S.,
Andersen, L.H.: Absorption spectra of photoactive yellow protein chromophores in vacuum.
Biophys. J. 89, 2597–2604 (2005)
12. Støchkel, K., Milne, B.F., Brøndsted Nielsen, S.: Absorption spectrum of the firefly luciferin
anion isolated in vacuo. J. Phys. Chem. A 115, 2155–2159 (2011)
13. Støchkel, K., Hansen, C.N., Houmøller, J., Nielsen, L.M., Anggara, K., Linares, M., Norman,
P., Nogueira, F., Maltsev, O.V., Hintermann, L., Brøndsted Nielsen, S., Naumov, P., Milne, B.
F.: On the influence of water on the electronic structure of firefly oxyluciferin anions from
absorption spectroscopy of bare and monohydrated ions in vacuo. J. Am. Chem. Soc. 135,
6485–6493 (2013)
14. Houmøller, J., Wanko, M., Støchkel, K., Rubio, A., Brøndsted Nielsen, S.: On the effect of a
single solvent molecule on the charge-transfer band of a donor-acceptor anion. J. Am. Chem.
Soc. 135, 6818–6821 (2013)
15. Andersen, L.H., Nielsen, I.B., Kristensen, M.B., El Ghazaly, M.O.A., Haacke, S., Brøndsted
Nielsen, M., Petersen, M.A ˚ .: Absorption of Schiff-base retinal chromophores in vacuo. J. Am.
Chem. Soc. 127, 12347–12350 (2005)
16. Rajput, J., Rahbek, D.B., Andersen, L.H., Hirshfeld, A., Sheves, M., Altoe, P., Orlandi, G.,
Garavelli, M.: Probing and modeling the absorption of retinal protein chromophores in vacuo.
Angew. Chem. Int. Ed. 49, 1790–1793 (2010)
17. Valsson, O., Filippi, C.: Gas-phase retinal spectroscopy: temperature effects are but a mirage.
J. Phys. Chem. Lett. 3, 908–912 (2012)
18. Gozem, S., Krylov, A.I., Olivucci, M.: Conical intersection and potential energy surface
features of a model retinal chromophore: comparison of EOM-CC and multireference
methods. J. Chem. Theory Comput. 9, 284–292 (2013)
19. Virshup, A.M., Punwong, C., Pogorelov, T.V., Lindquist, B.A., Ko, C., Martinez, T.J.:
Photodynamics in complex environments: ab initio multiple spawning quantum mechanical/
molecular mechanical dynamics. J. Phys. Chem. B 113, 3280–3291 (2009)
20. Goto, M., Matsumoto, J., Shiromaru, H., Achiba, Y., Majima, T., Tanuma, H., Azuma, T.:
Laser-induced thermal detachment of hot, large molecular ions under multiphoton-absorption
conditions. Phys. Rev. A 87, 033406 (2013)
21. Saito, M., Tanabe, T., Noda, K., Lintuluoto, M.: Photodissociation of the monoanions of gasphase chlorophylls a and b in an electrostatic storage ring. Phys. Rev. A 87, 033403 (2013)
22. Tanabe, T., Saito, M., Noda, K., Starikov, E.B.: Molecular structure conversion of fluorescein
monoanions in an electrostatic storage ring. Eur. Phys. J. D 66, 163 (2012)
23. Kanu, A.B.., Dwivedi, P., Tam, M., Matz, L., Hill Jr., H.H.: Ion mobility-mass spectrometry.
J. Mass Spectrom. 43, 1–22 (2008)
24. Adamson, B., Coughlan, N., Continetti, R., Bieske, E.: Changing the shape of molecular ions:
photoisomerization action spectroscopy in the gas phase. Phys. Chem. Chem. Phys. (2013).
doi:10.1039/C3CP51393A
18
S.B. Nielsen
photoactive yellow protein (PYP) chromophore: interplay of two torsions, a HOOP mode and
hydrogen bonding. J. Phys. Chem. A 115, 9237–9248 (2011)
7. Wanko, M., Garcia-Risueno, P., Rubio, A.: Excited states of the green fluorescent protein
chromophore: performance of ab initio and semi-empirical methods. Phys. Status Solidi. B
Basic Solid State Phys. 249, 392–400 (2012)
8. Toker, Y., Rahbek, D.B., Klærke, B., Bochenkova, A.V., Andersen, L.H.: Direct and indirect
electron emission from the green fluorescent protein chromophore. Phys. Rev. Lett. 109,
128101 (2012)
9. Mooney, C.R.S., Sanz, M.E., McKay, A.R., Fitzmaurice, R.J., Aliev, A.E., Caddick, S.,
Fielding, H.H.: Photodetachment spectra of deprotonated fluorescent protein chromophore
anions. J. Phys. Chem. A 116, 7943–7949 (2012)
10. Horke, D.A., Verlet, J.R.R.: Photoelectron spectroscopy of the model GFP chromophore
anion. Phys. Chem. Chem. Phys. 14, 8511–8515 (2012)
11. Nielsen, I.B., Boye-Peronne, S., El Ghazaly, M.O.A., Kristensen, M.B., Brøndsted Nielsen, S.,
Andersen, L.H.: Absorption spectra of photoactive yellow protein chromophores in vacuum.
Biophys. J. 89, 2597–2604 (2005)
12. Støchkel, K., Milne, B.F., Brøndsted Nielsen, S.: Absorption spectrum of the firefly luciferin
anion isolated in vacuo. J. Phys. Chem. A 115, 2155–2159 (2011)
13. Støchkel, K., Hansen, C.N., Houmøller, J., Nielsen, L.M., Anggara, K., Linares, M., Norman,
P., Nogueira, F., Maltsev, O.V., Hintermann, L., Brøndsted Nielsen, S., Naumov, P., Milne, B.
F.: On the influence of water on the electronic structure of firefly oxyluciferin anions from
absorption spectroscopy of bare and monohydrated ions in vacuo. J. Am. Chem. Soc. 135,
6485–6493 (2013)
14. Houmøller, J., Wanko, M., Støchkel, K., Rubio, A., Brøndsted Nielsen, S.: On the effect of a
single solvent molecule on the charge-transfer band of a donor-acceptor anion. J. Am. Chem.
Soc. 135, 6818–6821 (2013)
15. Andersen, L.H., Nielsen, I.B., Kristensen, M.B., El Ghazaly, M.O.A., Haacke, S., Brøndsted
Nielsen, M., Petersen, M.A ˚ .: Absorption of Schiff-base retinal chromophores in vacuo. J. Am.
Chem. Soc. 127, 12347–12350 (2005)
16. Rajput, J., Rahbek, D.B., Andersen, L.H., Hirshfeld, A., Sheves, M., Altoe, P., Orlandi, G.,
Garavelli, M.: Probing and modeling the absorption of retinal protein chromophores in vacuo.
Angew. Chem. Int. Ed. 49, 1790–1793 (2010)
17. Valsson, O., Filippi, C.: Gas-phase retinal spectroscopy: temperature effects are but a mirage.
J. Phys. Chem. Lett. 3, 908–912 (2012)
18. Gozem, S., Krylov, A.I., Olivucci, M.: Conical intersection and potential energy surface
features of a model retinal chromophore: comparison of EOM-CC and multireference
methods. J. Chem. Theory Comput. 9, 284–292 (2013)
19. Virshup, A.M., Punwong, C., Pogorelov, T.V., Lindquist, B.A., Ko, C., Martinez, T.J.:
Photodynamics in complex environments: ab initio multiple spawning quantum mechanical/
molecular mechanical dynamics. J. Phys. Chem. B 113, 3280–3291 (2009)
20. Goto, M., Matsumoto, J., Shiromaru, H., Achiba, Y., Majima, T., Tanuma, H., Azuma, T.:
Laser-induced thermal detachment of hot, large molecular ions under multiphoton-absorption
conditions. Phys. Rev. A 87, 033406 (2013)
21. Saito, M., Tanabe, T., Noda, K., Lintuluoto, M.: Photodissociation of the monoanions of gasphase chlorophylls a and b in an electrostatic storage ring. Phys. Rev. A 87, 033403 (2013)
22. Tanabe, T., Saito, M., Noda, K., Starikov, E.B.: Molecular structure conversion of fluorescein
monoanions in an electrostatic storage ring. Eur. Phys. J. D 66, 163 (2012)
23. Kanu, A.B.., Dwivedi, P., Tam, M., Matz, L., Hill Jr., H.H.: Ion mobility-mass spectrometry.
J. Mass Spectrom. 43, 1–22 (2008)
24. Adamson, B., Coughlan, N., Continetti, R., Bieske, E.: Changing the shape of molecular ions:
photoisomerization action spectroscopy in the gas phase. Phys. Chem. Chem. Phys. (2013).
doi:10.1039/C3CP51393A
18
S.B. Nielsen