Photofragment ionization-loss stimulated Raman spectroscopy of a hydrated neurotransmitter: 2-phenylethylamine–water

Different types of spectral signatures and their interpretation provide valuable information on intra- and inter-molecular interactions that lead to unique shapes of molecules and clusters. Here, ionization-loss stimulated Raman (ILSR) spectra of the 2-phenylethylamine–water (PEA–H 2 O) cluster were...

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Bibliographic Details
Published in:RSC advances 2014-01, Vol.4 (102), p.58752-58757
Main Authors: Mayorkas, Nitzan, Cohen, Snir, Sachs, Hanan, Bar, Ilana
Format: Article
Language:English
Subjects:
Bonding
Clusters
Fragmentation
Mathematical analysis
Monitoring
Neurotransmitters
Spectra
Spectral signatures
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Summary:Different types of spectral signatures and their interpretation provide valuable information on intra- and inter-molecular interactions that lead to unique shapes of molecules and clusters. Here, ionization-loss stimulated Raman (ILSR) spectra of the 2-phenylethylamine–water (PEA–H 2 O) cluster were obtained by monitoring the spectral signatures of PEA and of CH 2 NH 2 –H 2 O (a hydrated portion of the PEA tail) fragment ions. The ILSR spectra of both fragments were found to be similar, indicating that they are actually reminiscent of the PEA–H 2 O cluster signature. Comparison of the photofragment spectra to anharmonic calculated Raman spectra of the different conformers of the PEA–H 2 O clusters, suggests a structure with PEA similar to that of the most stable gauche conformer, with H 2 O hydrogen bonded to the nitrogen lone pair.
ISSN:2046-2069
2046-2069
DOI:10.1039/C4RA10493E