Publications de Anthi Kamariotou

Microsolvation effects on the excited state dynamics of protonated tryptophan

Ursula Röthlisberger, Thomas Rizzo, Ivano Tavernelli, Oleg Boyarkine, Sébastien Mercier, Michele Cascella, Matteo Guglielmi, Anthi Kamariotou

To better understand the complex photophysics of the amino acid tryptophan, which is widely used as a probe of protein structure and dynamics, we have measured electronic spectra of protonated, gas-phase tryptophan solvated with a controlled number of wate ...

2006

Electronic spectroscopy of cold, protonated tryptophan and tyrosine

Thomas Rizzo, Oleg Boyarkine, Sébastien Mercier, Anthi Kamariotou

We report here a new method to obtain electronic spectra of biomolecular ions that are produced in the gas phase by electrospray and cooled to ~10K in a 22-pole ion trap, and we demonstrate this technique by applying it to protonated tryptophan and tyrosin ...

2006

Infrared photofragment spectroscopy of charged amino acid water clusters in the gas phase

Anthi Kamariotou

We present in this work a new technique, which combines laser photofragmentation spectroscopy with tandem mass spectrometry, for structural investigations of biomolecular ions in the gas phase. A novel apparatus was designed and built for the implementatio ...

EPFL2006

Infrared spectroscopy of hydrated amino acids in the gas phase: protonated and lithiated valine

Thomas Rizzo, Rainer Beck, Oleg Boyarkine, Sébastien Mercier, Anthi Kamariotou, Evan Rowland Williams

We report here infrared spectra of protonated and lithiated valine with varying degrees of hydration in the gas phase and interpret them with the help of DFT calculations at the B3LYP/6-31++G** level. In both the protonated and lithiated species, our resul ...

2006