Initial ionization reaction in matrix-assisted laser desorption/ionization.

Abstract

The initial ionization reaction in matrix-assisted laser desorption/ionization (MALDI) was examined on the basis of the appearance of photoelectrons. The threshold laser fluence for the ejection of photoelectrons from 2,5-dihydroxybenzoic acid (DHB), sinapinic acid (SA), and trihydroxyacetopheone (THAP) on stainless steel (SS) substrates was 0.05, 0.41, and… (More)
DOI: 10.1021/jp104178m

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