Molecular recognition of ammonium ion by tetrahomodioxacalix[4]biscrown

Design of a stable solid-contact ion-selective electrode based on polyaniline nanoparticles as ion-to-electron transducer for application in process analytical technology as a real-time analyzer

“…S-1. It should be noted that the most important property of calixarenes (nano-baskets) is their ability to form supramolecular (inclusion) complexes with many appropriately sized organic ions and molecules, where the driving forces for this complexation are direct hydrogen bonding and cation-π-interactions [30,31]. In the present work, the hostguest complex is stabilised via a strong interaction between the cationic DB and the eight Hbonding sites of t-Bu-CX8.…”

Ion selective electrode (in-line analyzer) versus UV-spectroscopy (at-line analyzer); which strategy offers more opportunities for real time monitoring of the degradation kinetics of pyridostigmine bromide

“…With the purpose of achieving more selective binding to PB, the ionophore calix [6]arene (CX6) was chosen because it is more membrane-compatible and possesses outstanding complexation properties toward quaternary ammonium ions [10]. Calixarenes (nano-baskets) have the ability to form supramolecular (inclusion) complexes with many appropriately sized organic ions and molecules by direct hydrogen bonding and cation-π-interactions [11][12][13].…”

“…M a n u s c r i p t 12 Additional factor that affects the rate of the reaction is the pH of the buffer solution.…”

Molecular recognition of organic ammonium ions in solution using synthetic receptors

“…50) [260–262]. The inclusion of alkyl ammonium ions in the cavity of calixarenes is therefore reflected in a high field shift of the host signals in the 1 H NMR spectrum.…”