Polymer

pK0 in 0.1 M NaCl

Anion

Thermo chemical Radius (nm)

Free energy of hydration (kJ/mol)

Electron donor

Constant, En

P2VP

5.1 ± 0.2

Br

0.188

−315

1.51

P3VP

5.2 ± 0.2

Cl

0.172

−340

1.24

P4VP

5.1 ± 0.2

0.196

−300

0.29

0.240

−205

−0.73