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

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1993年 / 97卷 / 18期

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

页码：4720 / 4728

页数：9

共 41 条

[1]

ARMENTROUT PB, 1990, ANNU REV PHYS CHEM, V41, P313

[2] LASER DESORPTION FOURIER-TRANSFORM MASS-SPECTROMETRY FOR THE CHARACTERIZATION OF POLYMERS [J].