Analytical applications of crown compounds and cryptands

Design of Ion-Exchange Resins Selective of Caesium. Synergistic Effect of Macrocycle in Phenolic Resins

“…The condensation of dibenzo crown compounds with formaldehyde in formic acid occurs with crosslinking by methylene group (19). The condensation of dibenzo crown compounds with formaldehyde in formic acid occurs with crosslinking by methylene group (19).…”

Batch and FIA Spectrophotometric Determination of Sodium and Potassium Ions via Reaction with Sulfophthalein Derivatized Crown Ethers

“…[1] These substances are employed in analytical chemistry for separation, preconcentration, and determination of cations, anions, and organic substances, [2,3] with which CE form inclusion compounds; the selectivity of the reaction is affected primarily by the magnitude of the macrocycle cavity and the electron donor properties of its heteroatoms. This interaction principle forms the basis both for ion selective electrodes for the determination of the alkaline metals [4 -6] and also for the determination of these metals using capillary electrophoresis, [7 -9] ion chromatography, [10] etc.…”

Twistophane Macrocycles with Integrated 6,6′-Connected-2,2′-Bipyridine Units: A New Lead Class of Fluorescence Sensors for Metal Ions

“…Owing to their guest inclusion and complexation properties, a wealth of applications have been discovered for the vast range of macrocyclic structures thus far prepared. These applications include diverse areas such as: medical diagnostics and drug delivery,2a–2d analytical chemistry,3 metal extraction and separation,3, 4a–4c chemical synthesis,5 polymer chemistry,6 food science7 and, more recently, the domain of nanochemistry 8. They have also played a pivotal role in the synthesis and study of challenging molecular architecture and topology 9…”