Publications de Annette Svendsen

IR-induced conformational isomerization of a helical peptide in a cold ion trap

Thomas Rizzo, Aleksandra Zabuga, Caroline Seaiby, Annette Svendsen

In this work we use laser-induced population transfer techniques to study the conformational isomerization of a helical peptide, Ac-Phe-(Ala)5-LysH+, in a cold ion trap. In one scheme, called IR-UV hole-filling spectroscopy, a single conformation is select ...

American Institute of Physics2016

Conformational distribution of bradykinin [bk+2H]2+ revealed by cold ion spectroscopy coupled with FAIMS

Thomas Rizzo, Oleg Boyarkine, Annette Svendsen, Georgios Papadopoulos

We employ Cold Ion Spectroscopy (CIS) in conjunction with high-Field Asymmetric Waveform Ion Mobility Spectrometry (FAIMS) to study the peptide bradykinin in its doubly protonated charge state ([bk+2H]2+). Using FAIMS we partially separate the electrospray ...

Springer-Verlag2012

Spectroscopy of mobility-selected biomolecular ions

Thomas Rizzo, Oleg Boyarkine, Annette Svendsen, Georgios Papadopoulos

We describe here experiments that combine differential ion mobility, which separates conformational isomers of biomolecular ions, with electronic spectroscopy in a cold, radio-frequency ion trap. Although the low temperature attainable in a cold ion trap g ...

2011

A new tandem mass spectrometer for photofragment spectroscopy of cold, gas-phase molecular ions

Thomas Rizzo, Ulrich Lorenz, Oleg Boyarkine, Annette Svendsen

We present here the design of a new tandem mass spectrometer that combines an electrospray ion source with a cryogenically cooled ion trap for spectroscopic studies of cold, gas-phase ions. The ability to generate large ions in the gas phase without fragme ...

American Institute of Physics2010