Research Article

On the Primary Ionization Mechanism(s) in Matrix-Assisted Laser Desorption Ionization

Table 5

Dissociation energy of conjugates into a cation and TFA anion (see Scheme 5).

Conjugate of TFA with (eV) (eV) (eV)

Benzoic acid6.043.683.50
2,5-dihydroxybenzoic acid6.39
4-methoxybenzoic acid5.88
4-nitrobenzoic acid6.64
4-N,N-dimethylaminobenzoic acid5.48