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.
|Titolo:||Protonated Hexazamacrocycles as selective K+ Receptors|
|Data di pubblicazione:||2015|
|Appare nelle tipologie:||Articolo|