CALIXARENE

摘要

Disclosed are "acid-thioamide" calixarenes of formula (I), wherein: L is [-CR2-] or [-O-CH2-O-] and is the same or different between each aryl group; R5 is H, NO2, halogen, or C1-C10aliphatic hydrocarbyl group, C6-c20 aryl group, C6-C20 hydrocarbylaryl group, any of which is optionally substituted by one or more halo or oxo groups or interrupted by one or more oxo groups, and R5 is the same or different on each aryl group: R1 comprises a carboxy group which is or is not protonated or protected; two groups out of R2, R3 and R4 are H; and the one group out of R2, R3 and R4 not being H comprises a thioamide group. Dimer calixarenes are also disclosed. Also disclosed are methods of use of such calixarenes for the purposes of metal sequestration, especially of lanthanides and actinides. Also disclosed are processes for preparing the calixarenes. Further disclosed are sensors and sensor components utilising the calixarenes of the present invention.