| CPC A01N 43/50 (2013.01) [A01P 1/00 (2021.08); C08F 226/06 (2013.01)] | 20 Claims |

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1. A copolymer, comprising a plurality of monomers represented by formula I and formula II or salts thereof:
![]() wherein
R1, R2, and R3 are each independently hydrogen, alkyl, or halo;
A1 is aryl or heteroaryl;
m1, m2, m3, or m4 are each independently an integer from 1-20; and
the copolymer comprises 2-5,000 repeat units.
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