A photocurable or thermally curable thiosulfate-containing polymer has (a) recurring units and (d) recurring units, shown as either Structure (I) or (II) and Structure (V) below: R represents the organic polymer backbone, G is a single bond or divalent linking group, Q+ is an organic charge balancing cation, M represents a charge balancing cation, and “a” represents at least 0.5 mol % and to 99.5 mol % of (a) recurring units; R″ represents the organic polymer backbone, G″ is a carbonyloxy group, R3 comprises a monovalent linear, branched, or carbocyclic non-aromatic hydrocarbon group having 1 to 18 carbon atoms, or it comprises a phenyl group having one or more such substituents, and “d” represents at least 0.5 mol % and to 99.5 mol % of (d) recurring units. These thiosulfate-containing polymers can be used to made dielectric compositions and gate dielectric layers in various devices.