TRANSITION-METAL CATIONIZATION OF LASER-DESORBED PERFLUORINATED POLYETHERS WITH FTICR MASS-SPECTROMETRY

被引:15
作者
CROMWELL, EF [1 ]
REIHS, K [1 ]
DEVRIES, MS [1 ]
GHADERI, S [1 ]
WENDT, HR [1 ]
HUNZIKER, HE [1 ]
机构
[1] IBM CORP,DIV RES,SAN JOSE,CA 95120
关键词
D O I
10.1021/j100120a027
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Mass spectra of perfluorinated polyether (PFPE) films on metal substrates have been measured using a novel transition-metal cationization technique combined with FTMS. Full parent mass distributions were obtained with this technique. Two pulsed lasers were employed: a low fluence laser for PFPE desorption and a high fluence laser for metal ion formation. Cationization was observed to occur in the gas phase above the sample surface. The dynamics of the process are discussed. Applications to measure average molecular weights and study photochemistry of PFPE samples are presented. Electron attachment to PFPEs was also studied. Only negative ion fragments were observed from this process.
引用
收藏
页码:4720 / 4728
页数:9
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