Crosslinked polymeric dielectric materials and electronic devices incorporating same

An electronic device comprising a semiconductor component and a dielectric material, wherein the dielectric material comprises a crosslinked polymeric material comprising a thermally cured product of a precursor composition, the precursor composition comprising:

• (1) a polymeric component and a thermally curable crosslinker, (2) a thermally curable polymeric crosslinker, or both (1) and (2), wherein:
• the thermally curable crosslinker of (1) has the formula:
• (X)3-m(Y)mSi—Z—Si(Y)m(X)3-m, and
• the thermally curable polymeric crosslinker of (2) comprises a pendant group comprising a crosslinking moiety having the formula:
• -Q-Si(Y)m(X)3-m,
• wherein:
• Q, at each occurrence, independently is selected from the group consisting of -L-, —O—,—O-L, -L-O—, —NR4—, —NR4-L-, -L-NR4—, and a covalent bond;
• X, at each occurrence, independently is selected from the group consisting of a halogen, —NR1R2, —OR3, and —OC(O)R3;
• Y, at each occurrence, independently is selected from the group consisting of H, a C1-6 alkyl group, and a C1-6 haloalkyl group;
• Z is Q-W-Q, provided that Q and W do not combine to form a moiety selected from the group consisting of —O—, a divalent C1-20 alkyl group, and a covalent bond;
• and
• m, at each occurrence, independently is 0, 1, or 2;
• wherein:
• L, at each occurrence, independently is a divalent C1-10 alkyl group or a divalent C1-10 haloalkyl group, each of which optionally is substituted with 1-4 R4 groups;
• W is selected from the group consisting of —SiXX—, —SiXY—, —SiYY—, —SiXX—O—, —O—SiXX—, —SiXY—O—, —O—SiXY—, —SiYY—O—, —O—SiYY—, —O—{[CR42)t—O]p—[CR52)t-O]q}—, a divalent C6-14 aryl group, a divalent 5-14 membered heteroaryl group, and a covalent bond, wherein each of the divalent C6-14 aryl group and the divalent 5-14 membered heteroaryl group is optionally substituted with 1-4 R4 groups;
• R1 and R2 independently are selected from the group consisting of H, a C1-6 alkyl group, a C6-14 aryl group, a 5-14 membered heteroaryl group, a —C1-6alkyl-C6-14aryl group, and a —C1-6 alkyl-5-14 membered heteroaryl group;
• R3 is selected from the group consisting of H, a C1-6 haloalkyl group, a C2-6 alkenyl group, a C2-6 alkynyl group, a C6-14 aryl group, a 5-14 membered heteroaryl group, a —C1-6 alkyl group, C6-14 aryl group, and a —C1-6 alkyl-5,14 membered heteroaryl group;
• R4 and R5, at each occurrence, independently are selected from the group consisting of H, a halogen, a C1-6 alkyl group, a C1-6 haloalkyl group, a C6-14 aryl group, a 5-14 membered heteroaryl group, a —C1-6 alkyl —C6-14 aryl group, a —C1-6 alkyl-5-14 membered heteroaryl group, and -Q-Si(Y)m(X)3-m;
• p is 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 or 19;
• and
• q is 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 or 20, provided that p+q≦20;
• and
• t, at each occurrence, independently is 1, 2, 3, 4, 5, or 6.