Charge-bearing cyclodextrin polymeric materials and methods of making and using same

A porous polymeric material comprising a plurality of cyclodextrins crosslinked with a plurality of aryl diisocyanate crosslinkers, wherein one or more of the plurality of cyclodextrins are bound to a linker of formula (I):

• wherein
• A is an aryl moiety;
• each R1 is independently H or C1-C6 alkyl;
• each R2 is independently H or alkyl;
• each W is independently a bond, an alkylene group, an arylene group, a heteroarylene group, —O-arylene-, —(CH2)a-arylene-, —SO2-arylene-, —NH-arylene-, —S-arylene-, —O— heteroarylene-, —(CH2)a-heteroarylene-, —SO2-heteroarylene-, —NH-heteroarylene-, —S-heteroarylene-, —(—O—(CH2)a—)x—, —(—NH—(CH2)a—)x—, —(—S—(CH2)a—)x—,
• wherein a is 0-100 and x is 1-100, and each arylene or heteroarylene moiety can be substituted or unsubstituted;
• each Z is a cationic moiety;
• each L is
• A′ is a covalent bond to A;
• Z′ is a covalent bond to Z;
• * is a covalent bond to ;
• is a point of attachment to the plurality of cyclodextrin carbon atoms;
• x is 0-8;
• y1 is 1-4;
• y2 is 1-4;
• and
• y3 is 0-4.