An electronic device comprising a field-effect transistor having a semiconductor layer comprising a semiconducting electronic material, a dielectric layer comprising an insulating electronic material, and source, drain, and gate electrodes each comprising a conducting electronic material, wherein the field-effect transistor comprises: an organic material comprising a crosslinked matrix of a polymer, the polymer being at least one of: a homopolymer of a first repeating unit of Formula ( Ia): and a copolymer of a first repeating unit of Formula ( Ia) and a second repeating unit of Formula ( Ib) that is different from the first repeating unit of Formula ( Ia): wherein: L and L' independently are absent or a divalent linker optionally selected from the group consisting of -C 6 H 5 -, -Y-, and -C O-Y-, wherein Y is selected from the group consisting of a divalent C 1-10 alkyl group and a divalent C 1-10 haloalkyl group; W is -(CR a' =CR c') p -(CR b' =CR d') p' -Z', Z is selected from the group consisting of a C 1-10 alkyl group, a C 1-10 haloalkyl group, a substituted or unsubstituted C 6-14 aryl group, and a substituted or unsubstituted 5-14 membered heteroaryl group; Z' is selected from the group consisting of H, a C 1-10 alkyl group, a C 1-10 haloalkyl group, a substituted or unsubstituted C 6-14 aryl group, and a substituted or unsubstituted 5-14 membered heteroaryl group; R 1 and R 2 independently are H or CH 3; R a, R a', R b and R b' independently are selected from the group consisting of H, F, Cl, CN, CH 3, and CF 3; R c, R c', R d and R d' independently are selected from the group consisting of H, a C 1-10 alkyl group, a C 1-10 haloalkyl group, a substituted or unsubstituted C 6-14 aryl group, and a substituted or unsubstituted 5-14 membered heteroaryl group; p and p' independently is 0 or 1; and q and q' independently is 0 or 1; wherein either the dielectric layer comprises the organic material as the insulating electronic material or the organic material is in contact with at least one of the electronic materials. an organic material comprising a crosslinked matrix of a polymer, the polymer being at least one of: a homopolymer of a first repeating unit of Formula ( Ia): and a copolymer of a first repeating unit of Formula ( Ia) and a second repeating unit of Formula ( Ib) that is different from the first repeating unit of Formula ( Ia): wherein: L and L' independently are absent or a divalent linker optionally selected from the group consisting of -C 6 H 5 -, -Y-, and -C O-Y-, wherein Y is selected from the group consisting of a divalent C 1-10 alkyl group and a divalent C 1-10 haloalkyl group; W is -(CR a' =CR c') p -(CR b' =CR d') p' -Z', Z is selected from the group consisting of a C 1-10 alkyl group, a C 1-10 haloalkyl group, a substituted or unsubstituted C 6-14 aryl group, and a substituted or unsubstituted 5-14 membered heteroaryl group; Z' is selected from the group consisting of H, a C 1-10 alkyl group, a C 1-10 haloalkyl group, a substituted or unsubstituted C 6-14 aryl group, and a substituted or unsubstituted 5-14 membered heteroaryl group; R 1 and R 2 independently are H or CH 3; R a, R a', R b and R b' independently are selected from the group consisting of H, F, Cl, CN, CH 3, and CF 3; R c, R c', R d and R d' independently are selected from the group consisting of H, a C 1-10 alkyl group, a C 1-10 haloalkyl group, a substituted or unsubstituted C 6-14 aryl group, and a substituted or unsubstituted 5-14 membered heteroaryl group; p and p' independently is 0 or 1; and q and q' independently is 0 or 1; L and L' independently are absent or a divalent linker optionally selected from the group consisting of -C 6 H 5 -, -Y-, and -C O-Y-, wherein Y is selected from the group consisting of a divalent C 1-10 alkyl group and a divalent C 1-10 haloalkyl group; W is -(CR a' =CR c') p -(CR b' =CR d') p' -Z', Z is selected from the group consisting of a C 1-10 alkyl group, a C 1-10 haloalkyl group, a substituted or unsubstituted C 6-14 aryl group, and a substituted or unsubstituted 5-14 membered heteroaryl group; Z' is selected from the group consisting of H, a C 1-10 alkyl group, a C 1-10 haloalkyl group, a substituted or unsubstituted C 6-14 aryl group, and a substituted or unsubstituted 5-14 membered heteroaryl group; R 1 and R 2 independently are H or CH 3; R a, R a', R b and R b' independently are selected from the group consisting of H, F, Cl, CN, CH 3, and CF 3; R c, R c', R d and R d' independently are selected from the group consisting of H, a C 1-10 alkyl group, a C 1-10 haloalkyl group, a substituted or unsubstituted C 6-14 aryl group, and a substituted or unsubstituted 5-14 membered heteroaryl group; p and p' independently is 0 or 1; and q and q' independently is 0 or 1; wherein either the dielectric layer comprises the organic material as the insulating electronic material or the organic material is in contact with at least one of the electronic materials.