Author/Authors :
Linder، نويسنده , , Rolf and Seefeld، نويسنده , , Kai and Vavra، نويسنده , , Andreas and Kleinermanns، نويسنده , , Karl، نويسنده ,
Abstract :
We present the first gas phase Fourier transform infrared (FTIR) spectra of the uncapped (natural) amino acids glycine, alanine, threonine, cysteine, methionine and capped methionine by using a fast thermal heating technique up to around 520 K to vaporize them. The experimental spectra taken in the range 700–4000 cm−1 show no sign of decomposition and are in good agreement with ab initio calculated frequencies and intensities of the non-zwitterionic form of the amino acids.
