Protonated hexaazamacrocycle [M•H]+ is able to detect K+ ions present at ppb level in methanolic solutions containing 10−5 M of Na+ ions. The high sensitivity and selectivity of [M•H]+ for K+ is ascribed to the favorable energy balance between the K+ ion desolvation and its coordination to the [M•H]+macrocycle, which allows the formation of the corresponding adduct before the Coulombic explosion of the ESI-MS nanodroplets.
Protonated Hexazamacrocycles as selective K+ Receptors
MARCANTONI, Enrico;
2015-01-01
Abstract
Protonated hexaazamacrocycle [M•H]+ is able to detect K+ ions present at ppb level in methanolic solutions containing 10−5 M of Na+ ions. The high sensitivity and selectivity of [M•H]+ for K+ is ascribed to the favorable energy balance between the K+ ion desolvation and its coordination to the [M•H]+macrocycle, which allows the formation of the corresponding adduct before the Coulombic explosion of the ESI-MS nanodroplets.File in questo prodotto:
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J Am Soc Mass Spectrom 2015.pdf
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