TY - JOUR
T1 - High- and low-energy collisionally activated decompositions of octaethylporphyrin and its metal complexes
AU - Domingues, M. Rosario M.
AU - Nemirovskiy, Olga V.
AU - Marques, M. Graço O.S.
AU - Neves, M. Graça
AU - Cavaleiro, J. A.S.
AU - Ferrer-Correia, A. J.
AU - Gross, Michael L.
N1 - Funding Information:
Rosario M. Domingues is grateful to Calouste Gulbenkian Foundation and FLAD for a research fellowship. Research at Washington University was supported by an NIH Mass Spectrometry Research Resource Grant (2P41RR00954).
PY - 1998
Y1 - 1998
N2 - High-energy (HE) and low-energy (LE) collisionally activated decompositions of octaethylporphyrin (OEP) and its metal complexes (ZnOEP and CuOEP) depend on whether the precursor is produced by electrospray ionization as protonated molecules or by fast atom bombardment as radical cations or protonated molecules. LE activation leads to such simple product-ion spectra that a complete picture of fragmentation emerges only after nine stages of tandem mass spectrometry (MS9). HE activation, on the other hand, gives product-ion spectra that afford an integrated view of all the decomposition channels in a single MS/MS experiment. These results are the basis of a recommendation that OEP is an appropriate model compound for investigating energy effects in the collisional activation of organic and bioorganic molecule ions.
AB - High-energy (HE) and low-energy (LE) collisionally activated decompositions of octaethylporphyrin (OEP) and its metal complexes (ZnOEP and CuOEP) depend on whether the precursor is produced by electrospray ionization as protonated molecules or by fast atom bombardment as radical cations or protonated molecules. LE activation leads to such simple product-ion spectra that a complete picture of fragmentation emerges only after nine stages of tandem mass spectrometry (MS9). HE activation, on the other hand, gives product-ion spectra that afford an integrated view of all the decomposition channels in a single MS/MS experiment. These results are the basis of a recommendation that OEP is an appropriate model compound for investigating energy effects in the collisional activation of organic and bioorganic molecule ions.
UR - http://www.scopus.com/inward/record.url?scp=0032252182&partnerID=8YFLogxK
U2 - 10.1016/S1044-0305(98)00048-8
DO - 10.1016/S1044-0305(98)00048-8
M3 - Article
C2 - 9692252
AN - SCOPUS:0032252182
SN - 1044-0305
VL - 9
SP - 767
EP - 774
JO - Journal of the American Society for Mass Spectrometry
JF - Journal of the American Society for Mass Spectrometry
IS - 8
ER -