Abstract: The invention provides a material comprising (i) a crown ether of formula (I), (ii) a crown ether of formula (II), and/or (iii) a crown ether of formula (III), or a salt thereof, wherein each m independently is an integer from 1 to 8, p is an integer from 1 to 1000, each “” designates an optionally present bond and/or structure, each X is an optionally present substituent, each * independently represents —H, ?O, or a bond to a remainder of the material, provided that at least one * is a bond to the remainder of the material, and wherein the remainder of the material is bound via a sp3-sp3 carbon-carbon bond, a method of making the material, and a method of using the material.

Abstract: The invention provides a material comprising (i) a crown ether of formula (I) and/or (ii) a crown ether of formula (II), or a salt thereof, wherein each m independently is an integer from 1 to 8, each “” designates an optionally present bond and/or structure, each X independently is —N(R1)2, —N*(R1), —N**, —N*(R1)2+Z?, or —N**(R1)+Z?, provided at least one X is —N*(R1), —N**, —N*(R1)2+Z?, or —N**(R1)+Z?, wherein each R1 independently is hydrogen or C1-6 alkyl, each Z is optionally present and independently is a counterion to balance the charge on nitrogen, and * represents a bond to a remainder of the material, a method of making the material, and a method of using the material.