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Matrix effects on matrix-assisted laser desorption/ionization mass spectrometry analysis of dendrimers with a pyridine-based skeleton

✍ Scribed by Gavino Chessa; Alberto Scrivanti; Roberta Seraglia; Pietro Traldi

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
132 KB
Volume
12
Category
Article
ISSN
0951-4198

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✦ Synopsis

Dendritic polypyridines were analysed by laser desorption (LD) and matrix-assisted laser desorption/ ionization (MALDI) mass spectrometry. For all the compounds examined, readily detectable cationized molecular species have been obtained under LD conditions, while for MALDI a strong matrix effect has been found, leading to fragments related to the original skeleton. To investigate this aspect, three differently branched dendrimers were analysed using three different matrices at different matrix/sample molar ratios. The fragmentation yield was found to be strongly dependent on the matrix used, on the matrix/sample molar ratios and on the molecular structure of the dendrimer.

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