Time-delayed 2-pulse studies of MALDI matrix ionization mechanisms

被引：53

作者：

Knochenmuss, R

Vertes, A

机构：

[1] ETH Zentrum, LOC, CH-8092 Zurich, Switzerland

[2] George Washington Univ, Dept Chem, Washington, DC 20052 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2000年 / 104卷 / 23期

关键词：

D O I：

10.1021/jp000494m

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：

Individually subthreshold, time-delayed 355 nm laser pulses were used to investigate matrix-assisted laser desorption/ionization (MALDI) ion formation time scales for the matrix 2,5 dihydroxybenzoic acid. With 30 ps pulses, it was possible to identify a prompt, subnanosecond, mechanism and a slow, nanosecond, process involving at least two steps.

引用

页码：5406 / 5410

页数：5

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