TY - JOUR
T1 - The formation of singly and doubly cationized oligomers in SIMS
AU - Delcorte, A.
AU - Wojciechowski, I.
AU - Gonze, X.
AU - Garrison, B. J.
AU - Bertrand, P.
N1 - Funding Information:
This study and AD are supported by the Belgian Fonds National pour la Recherche Scientifique . IW acknowledges the SSTC (Belgium) for financial support. The TOF-SIMS equipment was acquired with the support of the Région Wallonne and FRFC-Loterie Nationale of Belgium.
PY - 2003/1/15
Y1 - 2003/1/15
N2 - The cationization of sputtered organic species via metal particle adduction is investigated using poly-4-methylstyrene molecules in combination with Cu, Pd, Ag and Au substrates. Metal-cationization occurs for these four substrates. The cationized molecule yields vary with the considered substrate and they are not correlated with the metal ion yields. In addition, double cationization with two metal particles is observed with a very significant intensity for Cu, Ag and Au supports. We interpret the results with an emission scheme in which excited molecules and metal atoms recombine above the surface and decay via electron emission, thereby locking the complex in the ionic state.
AB - The cationization of sputtered organic species via metal particle adduction is investigated using poly-4-methylstyrene molecules in combination with Cu, Pd, Ag and Au substrates. Metal-cationization occurs for these four substrates. The cationized molecule yields vary with the considered substrate and they are not correlated with the metal ion yields. In addition, double cationization with two metal particles is observed with a very significant intensity for Cu, Ag and Au supports. We interpret the results with an emission scheme in which excited molecules and metal atoms recombine above the surface and decay via electron emission, thereby locking the complex in the ionic state.
UR - http://www.scopus.com/inward/record.url?scp=12244297738&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=12244297738&partnerID=8YFLogxK
U2 - 10.1016/S0169-4332(02)00709-2
DO - 10.1016/S0169-4332(02)00709-2
M3 - Article
AN - SCOPUS:12244297738
SN - 0169-4332
VL - 203-204
SP - 106
EP - 109
JO - Applied Surface Science
JF - Applied Surface Science
ER -