Ultraviolet photodissociation circular dichroism spectroscopy of protonatedl-phenylalanyl-l-alanine in a cryogenic ion trap

Abstract

We obtained ultraviolet photodissociation (UVPD) circular dichroism (CD) spectra of protonated L-phenylalanyl-L-alanine (L-H+PheAla) near the origin band of the S0-S1 transition using cryogenic ion spectroscopy. Infrared (IR) ion-dip, IR-UV hole...

The combination of laser photodissociation, action spectroscopy, and mass spectrometry to identify and separate isomers

“…222,223 Experimental setups using circular polarised light to generate gas-phase CD action spectra have also been developed recently. Gas-phase CD action spectra have been reported for small ions in a cryogenic ion trap 224,225 and large DNA polyanions at room temperature. 226 Photoelectron circular dichroism of amino acid anions was also recently reported.…”